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Aquarium Full of Oil For PC Cooling

JaredOfEuropa writes "Forget fancy watercooled CPUs or complicated heat pipes. Annoyed with the noise of the forced-air cooling in his computer, this guy simply dumped his entire motherboard in an aquarium filled with mineral oil. (coral cache). No modifications were necessary; he even left the fans running to keep the oil moving about. The only thing not submersed in oil is the hard disk."

597 comments

  1. In case of slashdotting by fembots · · Score: 1, Interesting

    Original site here.

    I'm surprised that the PSU and all the cables (like speaker/CAT5) work at all, I feel so uneducated.

    And I guess his parts have very little resale value?

    1. Re:In case of slashdotting by Anonymous Coward · · Score: 3, Insightful

      Wait, wait, wait... You are linking to the original site rather than the distributed cache to PREVENT it from getting Slashdotted?

    2. Re:In case of slashdotting by FuturePastNow · · Score: 5, Informative

      Isn't a mirror kind of useless if it has to pull the images from the original site's server? Just askin'

      --
      Give a man fire, and you warm him for the night. Set a man on fire, and you warm him for the rest of his life.
    3. Re:In case of slashdotting by linuxwrangler · · Score: 5, Informative
      I'm surprised that the PSU and all the cables (like speaker/CAT5) work at all, I feel so uneducated.

      Why wouldn't they? Oil doesn't conduct. That's why it's used for cooling in electrical devices such as transformers, dummy-loads and such. I recall one vendor who demonstrated the high breakdown voltage of their oil by running a TV set in a vat of the stuff. Almost anything has better heat removal ability than air and for silent running it's not a bad idea.

      There is still the problem of removing the heat. If there is enough surface area to allow the heat to be removed then you are ok, otherwise the oil (and everything else) will get too hot. Encasing everything in a metal box with fins on the outside would probably keep things even cooler.

      --

      ~~~~~~~
      "You are not remembered for doing what is expected of you." - Atul Chitnis
    4. Re:In case of slashdotting by kv9 · · Score: 5, Informative

      pretty much. here`s the mirrordot.

    5. Re:In case of slashdotting by kv9 · · Score: 5, Funny
      There is still the problem of removing the heat. If there is enough surface area to allow the heat to be removed then you are ok, otherwise the oil (and everything else) will get too hot.

      then you could always make some killer fries by overclocking. i see no prob w/ that.

    6. Re:In case of slashdotting by caluml · · Score: 1

      If that's the case, it's worse than useless.

    7. Re:In case of slashdotting by over_exposed · · Score: 1

      A friend of mine and I did this a few years back (still trying to find the pictures) but we used an Igloo cooler and a window air conditioner. The smaller of the radiators was submersed in the synthetic motor oil with the mobo while the larger of the two was outside attached to a box fan. Sure it was loud as hell and nearly blew the breaker every time it kicked on, but we could get everything in the cooler (mobo, ram, vid card, etc) to -100 Fahrenheit.

      --
      "The object of war is not to die for your country, but to make the other bastard die for his." - Patton
    8. Re:In case of slashdotting by bani · · Score: 1

      Can't imagine this is more efficient than air cooling. Oil is far denser than air and the cooling comes from air cycling through the components and carrying the heat away. I wouldnt expect oil convection cooling to be terribly effective...

    9. Re:In case of slashdotting by 2names · · Score: 2, Insightful

      Look up "Latent Heat of Cooling" and then re-read your post.

      --
      "I'm just here to regulate funkiness."
    10. Re:In case of slashdotting by philkerr · · Score: 1
      Encasing everything in a metal box with fins on the outside would probably keep things even cooler.

      Like the Zalman TNN 500 Case?

      Totally silent as it uses the case as a passive radiator for the CPU and GPU.

    11. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      Boy, you're dumb. Glad you don't design power transformers!

    12. Re:In case of slashdotting by sentientbeing · · Score: 1

      Yeah I thought the same. Not the insulated cables tho - wouldnt there be problems caused on the mobo due to the changes in capacitance between all the conductive tracks?

      Capacitance changes with dialetric right?

      --

      ------
      beware he who would deny you access to information, for in his mind he dreams himself your master
    13. Re:In case of slashdotting by Short+Circuit · · Score: 1

      Or better yet, volumetric heat capacity...

    14. Re:In case of slashdotting by khrtt · · Score: 4, Insightful

      I'd say the biggets problem with this is making sure the plastic in all the components is oil-compatible, i.e. doesn't degrade or dissolve. The bottoms of most shoes do, as anyone knows who stepped in a puddle of oil in a garage. So why not plastic used as structural material and insulation?

      Also, loading a fan by making it spin in oil might make it use more power than normal, possibly overloading and overheating either the motor or the drive circuit, though the better cooling provided by the oil could alleviate that.

    15. Re:In case of slashdotting by HardCase · · Score: 5, Informative

      wouldnt there be problems caused on the mobo due to the changes in capacitance between all the conductive tracks?

      No, because the trace impedance is set by the dialectric between the layers in the motherboard - it's the dialectric constant of the PCB material combined with the spacing between the trace and the plane beneath it, along with the trace width. Whatever is above the trace, in terms of what would normally be free air, makes virtually no difference, particularly since the motherboards already have a conformal coating with a fixed dialectric constant anyway.

      But there are probably plenty of other reasons why vegetable oil isn't so great for your computer.

      -h-

    16. Re:In case of slashdotting by bergeron76 · · Score: 1

      And you could add 2 giant fans to blow air across the fins to keep it even cooler!

      Oh wait...

      --
      Don't think that a small group of dedicated individuals can't change the world. It's the only thing that ever has.
    17. Re:In case of slashdotting by Anonymous Coward · · Score: 0
      -100 Fahrenheit

      That's cold enough to freeze CO2. Even synthetic motor oil (5W20) wont pour below -50 F. I also doubt the capacitors can handle -100 F.

    18. Re:In case of slashdotting by sidb · · Score: 1

      OK, oil doesn't conduct. That's good for not shorting everything out, but computers rely heavily on plugs. I imagine he plugged everything in before dumping it all in the aquarium, but when he wants to add something, he'll have to stick the cable or card into a socket already coated in nonconducting goop. Maybe the connections are tight enough to drive out the oil, but I wouldn't be surprised if they turn out to be somewhat fickle. Plus his hand will be all goopy. Yuck.

    19. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      Boy,you're dumb. power transformers use oil as a dielectric. it is not a great coolant and not great in general because it is flammable. before they were outlawed, PCBs were favored by far. Glad you don't design power transformers!

    20. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      Compared to air, it's a heat superconductor, mr Tesla.

    21. Re:In case of slashdotting by over_exposed · · Score: 1

      My apologies - that should read -10 degrees (F). I'm an idiot. Makes a little more sense now, huh?

      --
      "The object of war is not to die for your country, but to make the other bastard die for his." - Patton
    22. Re:In case of slashdotting by Nutria · · Score: 4, Interesting

      Or better yet, volumetric heat capacity...

      The Good Eats episode on How To Thaw A Turkey did a great job of explaining that in layman's terms:

      Cool running water melts a ice cube duck faster than a pot of water removed from the stove just as it started to boil.

      --
      "I don't know, therefore Aliens" Wafflebox1
    23. Re:In case of slashdotting by PatrickJ_M · · Score: 0

      Obviously, because the site posted on slashdot doesn't load the images, this one does. :-)

    24. Re:In case of slashdotting by Rei · · Score: 1

      I've always wondered why passive radiators aren't used more. I mean, it's not like copper has any trouble transferring heat away from a surface. Is it simply the cost/weight of bulk copper (or, for a cheaper but probably still quite effective solution, aluminum)? Or space for the radiators?

      --
      I'm you from the future! We have to finish our time machine before the Angels of Destruction find the portal!
    25. Re:In case of slashdotting by Curtman · · Score: 1

      If that's the case, it's worse than useless.

      Most of these make your system quieter setups are just way too overboard. I took a low-tech approach, and jabbed a 1" hole in the drywall, and put the box in the next room. Plenty quiet enough for me.

    26. Re:In case of slashdotting by Cade144 · · Score: 1

      Exactly my thought! What if your mouse crapps out? How do you put in a new one once you take the old one out, and the socket is now filled with nice, non-conducting oil?
      Long kitchen-type gloves can keep the goo off you hands. And, mineral oil isn't so bad for your hands, it will keep them nice and moist.
      And what about any oil-soluable compounds in the electronics? won't they pollute the oiltank? And if resins and other organic compounds do leach out into the mineral oil bath, won't that slowly change the properties of those components?
      The chemistry of this might be intersting to investigate, if I were a chemist.

    27. Re:In case of slashdotting by Curtman · · Score: 1

      I probably should have read the beginning of that thread. Hah. Sorry guys.

    28. Re:In case of slashdotting by Flashbck · · Score: 1

      Bah! This isn't even original! Some guy did this back in the late 90's. It was done by a guy called Dr. Freeze (I can't find the website anymore). He submerged his MB in a cooler filled with mineral oil and used an AC to cycle the oil out and re-cool it.

    29. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      Wow. French fries cooked in mineral oil. Tasty, and you wouldn't need to eat any roughage.

    30. Re:In case of slashdotting by Spy+der+Mann · · Score: 1

      Should I post the link to the Coral Cache of the Mirrordot?

      Or the Mirrodot of the Coral Cache?

      Hmmm... tough one.

    31. Re:In case of slashdotting by Tmack · · Score: 5, Informative
      Can't imagine this is more efficient than air cooling. Oil is far denser than air and the cooling comes from air cycling through the components and carrying the heat away. I wouldnt expect oil convection cooling to be terribly effective...

      Its that density that has alot to do with it: more mass for it to offload the heat into per area vs. the air. Even if the fans were left off, oil is a much more effecient conductor of heat than air. To get straight to the point, the thermal conductivity (ie: how well it conducts heat) of air is 0.024Watts per Meter*degree Kelvin, vs that of Oil (machine oil in this case, but mineral will be on the same order of magnitude) at 0.15W/MK. Water would be better if it didn't tend to let the electrons go wherever they wanted, its conductivity is 0.58. The area of hot surfaces on the computer that are exposed is the same, since this is total emersion, and so long as the oil is moving enough to distribute the heat, the ammount of oil in the container is enough to serve as a decent heat sink, and the large surface areas of the top of the oil and sides of the aquarium would be sufficient for distributing that heat for the air to convect away.

      How much heat this would work for would require thermo equations on the surface area of the exposed tank surfaces using convection (q=hA(dt)). h is the thermal transfer coefficient, and depends on velocity, density, geometry, flow pattern and a few other things, and since Im lazy Ill leave that as an exercize to the reader. Once you find h though (and for a flat plate like the aquarium walls and oil/air surface is, it should be easy), calculating the saturation point is simple.

      been too long since I touched thermo...

      tm

      --
      Support TBI Research: http://www.raisinhope.org
    32. Re:In case of slashdotting by Cade144 · · Score: 2, Interesting

      Oh, here is some nifty stuff from 3M:
      Fluorinert.

      3M(TM) Fluorinert(TM) Electronic Liquid FC-77

      Heat Transfer Fluids
      The wide liquid range of Fluorinert liquid FC-77 (-110 deg C to 97 deg C) makes it ideal for use in automated test equipment (ATE) and other semiconductor process equipment. Its high dielectric strength means it will not damage electronic equipment or semiconductor wafers, chips or packages in the event of a leak or other failure.

      In addition, FC-77 liquid is chemically stable, nonflammable and practically non-toxic.

      Looks like nicely expensive stuff.

      At over $500US for 250mL, it would take a princely sum to fill a fishtank....

    33. Re:In case of slashdotting by b!arg · · Score: 1

      I bet it would be good for keeping out that pesky dust though. Maybe a good idea for computers on construction sites and the like!

      --

      Everybody dies frustrated and sad and that is beautiful
    34. Re:In case of slashdotting by Spetiam · · Score: 1

      Boiling hot running water would melt the duck even more quickly.

    35. Re:In case of slashdotting by sylvandb · · Score: 1

      What if your mouse crapps out? How do you put in a new one once you take the old one out, and the socket is now filled with nice, non-conducting oil?

      What, it is full of nice conducting air now? (hint, connectors have contact pressure, so as long was what covers the contacts moves under that pressure, there is no problem)

      And what about any oil-soluable compounds in the electronics? won't they pollute the oiltank? And if resins and other organic compounds do leach out into the mineral oil bath, won't that slowly change the properties of those components?

      Contaminates in the oil and oil-soluable bits would be my biggest concern.

      sdb

    36. Re:In case of slashdotting by Anonymous Coward · · Score: 0



      obtw - Did you want fries with that?

    37. Re:In case of slashdotting by rapidweather · · Score: 1
      I just got ahold of an older (1997) Gateway computer, air cooled, and the floppy drive is full of lint, etc.
      I have a cat, and he really has the air full of pet hair all the time, getting pulled in, by the fans, into the computers around here.

      Interesting idea, oil cooling, but not what I expected, the entire board being in the oil. I don't suppose pet hair could get in that, if the container is sealed.
      Did inherit a HP box once, owned by a guy with two big shaggy dogs. That little computer was full of pet hair, to the extreme.
      This guy might be onto something.

    38. Re:In case of slashdotting by Anonymous Coward · · Score: 3, Funny

      Look more closely. They're selling it by the MegaLitre (ML).

    39. Re:In case of slashdotting by fLameDogg · · Score: 1
      Hm. Those Anonymous Cowards are more useful than I thought.

      Oh. Never mind.

      --
      fD
    40. Re:In case of slashdotting by Blakey+Rat · · Score: 1

      ... but not $1200 DAMNED DOLLARS!

      Holy shit those are expensive.

    41. Re:In case of slashdotting by fbjon · · Score: 1

      I thought oil dissolves rubber soles, not plastic. Also, what if you step in vegetable oil as opposed to motor oil, does the sole still dissolve?

      --
      True confidence comes not from realising you are as good as your peers, but that your peers are as bad as you are.
    42. Re:In case of slashdotting by shobadobs · · Score: 2, Funny

      Why not do it at -40 next time; that way you don't have to keep all those F's.

    43. Re:In case of slashdotting by Yaztromo · · Score: 5, Interesting
      'd say the biggets problem with this is making sure the plastic in all the components is oil-compatible, i.e. doesn't degrade or dissolve. The bottoms of most shoes do, as anyone knows who stepped in a puddle of oil in a garage. So why not plastic used as structural material and insulation?

      Oil isn't even necessarily the best material to do this -- it's probably just the cheapest and easiest for a hobbiest to get hold of.

      Liquid Fluorocarbon does an excellent job. The Ontario Science Centre used to have a great display of an operating television completely submurged in a small vat of the stuff. And fluorocarbon is effectively a plastic itself, and thus is harmless to plastics (unlike many oils).

      Yaz.

    44. Re:In case of slashdotting by me+at+werk · · Score: 2, Insightful
      CPU Cooling Insanity
      Saturday May 29 1999
      moonboy writes "I saw this over at Ars Technica. This dude submerged his entire motherboard in mineral oil. As if that weren't enough, he then and got a 5,000 BTU (window?) unit and circulates the oil through the coils to keep it all cool." Don't expect Gateway to be offering these any time soon... I suspect it will a bit more than just void your warranty. It'll probably make motherboard engineers come to your home under cover of darkness carrying loaded shotguns :)
      --
      For context, click Parent.
    45. Re:In case of slashdotting by I_Love_Pocky! · · Score: 1

      Actually, the oil used was vegetable oil. It would probably make for some tasty fries.

    46. Re:In case of slashdotting by endoftheroadmatt · · Score: 3, Informative

      Actually, if you change the permitivity of the layer ABOVE the trace, you change the the "effective" permitivity of the transmission line (since e_r of oil is greater than e_r of air, you will increase the effective e_r of the transmission line). This will cause a net change in impedance of the transmission line. This cause cause havoc with timing. (check out "Microwave Engineering", Pozar) Just a thought.

    47. Re:In case of slashdotting by Lihtan · · Score: 1

      I'm surprised that the PSU and all the cables (like speaker/CAT5) work at all, I feel so uneducated...

      Although already mentioned elsewhere in the comments here that oil is frequently used for transformer cooling and submersion of other electic devices, some care needs to be taken in choosing the type of oil you use. Oil as an insulator will try to impede the conduction of switches, relays and possibly connectors and plugs if can't be displaced from the contact surface. I know about this from personal experience. My car had an interesting property where the speedo-cable would syphon gear oil from the transmission, and dump it out back of the instrument cluster. Some oil ended up inside the cluster, however a LOT of oil ended up all over the wiring harness to eventually pool on the floor pan (yes it's as messy and discusting as it sounds, gear oil also has a unique stench to it as well). One day I notice my brake lights don't work. The leaking gear oil filled the cavity of the brake light switch and proceded to insulate the switch contacts enough so that the 15 - 20 Amps of current going through it overheated it and caused it to burn out.

      On another topic, I don't relish the idea of having to hose down computer parts with engine degreaser everytime I want to fix a computer.

      --
      Divide by zero hurts my brain.
    48. Re:In case of slashdotting by cartel · · Score: 1

      What if the guy wanted to take the computer apart? After he drained the oil, if he took out a card, would oil dripping onto the metal connectors cause any problems?

    49. Re:In case of slashdotting by Anonymous Coward · · Score: 1, Interesting

      To put it very simply, air is a superb insulator. The only thing going for forced air cooling is the availability of coolant. That's why radiators are filled with water and fridge doors with air.

    50. Re:In case of slashdotting by wing03 · · Score: 1

      The Ontario Science Centre used to have a great display of an operating television completely submurged in a small vat of the stuff

      Just took my 2 year old there.... although totally renovated, that display is still there.

      Looks funky.

    51. Re:In case of slashdotting by Alsee · · Score: 1

      air is 0.024Watts per Meter*degree Kelvin, vs that of Oil [] at 0.15W/MK. Water would be better if it didn't tend to let the electrons go wherever they wanted, its conductivity is 0.58

      What's the figure for Mercury? :)

      -

      --
      - - You can't take something off the Internet! That's like trying to take pee out of a swimming pool.
    52. Re:In case of slashdotting by Gooba42 · · Score: 1

      I hope you were joking.

      The ML was part of a model/part number while the actual unit given on the volume was ml.

      Ther are problems aside from cost though, the guy who actually tried Fluoroinert in a PC cooling setup found that it turned to jelly if it got too cold and burned out the pump he was using to circulate it.

      --
      I just found out there's no such thing as the real world. It's just a lie you've got to rise above. - John Mayer
    53. Re:In case of slashdotting by Anonymous Coward · · Score: 1, Interesting
      I imagine he plugged everything in before dumping it all in the aquarium, but when he wants to add something, he'll have to stick the cable or card into a socket already coated in nonconducting goop.
      Connectors use large contact pressures (tens or hundreds of psi) specifically to punch through gunk on the contact surfaces. In fact, most come from the factory with a thin coating of oil or grease to reduce wear and corrosion. A light mineral oil will probably not interfere with the connectors.
    54. Re:In case of slashdotting by petermgreen · · Score: 4, Informative

      size weight and cost

      for any non-trivial power dissipation a heatsink with a fan is a far better bet on all of those criteria than a passive heatsink

      while some heat leaves a heatsink by radiation a lot goes by conduction into the surrounding air. Whilst that air will move away by convection to some extent this isn't exactly a fast process especially in confined spaces like a computer case.

      fans make the airflow both significantly faster and more predicatable.

      the only real problem with fan cooling in such applications is noise.

      --
      note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
    55. Re:In case of slashdotting by kd5ujz · · Score: 0

      You can run the damn thing in water, as long as its pure. Water does not conduct electricity, its all the shit in water that conducts electricity.

      --
      -William
      God is everything science has yet to explain.
    56. Re:In case of slashdotting by Axe · · Score: 1

      While insulating/non-ionizing properties of oil are indeed useful, this is not the most critical issue, as voltage gaps between wires are not very high (the whole idea is for the wires to have as little resistance as possible so voltage drop is small and it does not heat too much. (I did not say inductance obviously)). It is indeed there mostly for cooling.

      --
      <^>_<(ô ô)>_<^>
    57. Re:In case of slashdotting by ignorant_coward · · Score: 1


      You guys are too smart for slashdot.

    58. Re:In case of slashdotting by larytet · · Score: 1

      i found that for pure water the resistivity r = 2.5 x 10^5 ohm
      and what is it for the mineral oil ?

    59. Re:In case of slashdotting by InvalidError · · Score: 1

      Lead-lined fries, yummy!

      And even if lead-free, lead is not the only yummy toxic thing involved in PCB and component manufacturing.

    60. Re:In case of slashdotting by larytet · · Score: 1

      2.5 x 10^5 ohm meters it does not sound good, for example the number for glass is 10^12

    61. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      That's exactly what I thought of when I read the summary. I used to have a membership to the OSC.

    62. Re:In case of slashdotting by The+Conductor · · Score: 1
      That effect will be quite small. Even on a surface stripline, most of the fields are interior to the PCB material because that is where the ground plane is. Comparing the equations on http://www.emclab.umr.edu/pcbtlc/index.html and using a typical PCB e_r of 4 to 4.2, I get a difference in Z0 of less than 15%.

      Close enough for digital circuits!

    63. Re:In case of slashdotting by InvalidError · · Score: 3, Informative

      Radiative cooling does not work particularly well until something like 250C, few (if any) semiconductors would ever survive using this cooling method... most power semiconductors are specified for 125-175C maximum junction termperature while most logic devices fall in the 65-75C range.

      As for fan noise, most HSF have this flaw in common: they place the fan immediately on the heatsink. Every time a blade crosses a fin, this messes up the airflow, generating noise and pressure losses which reduce effectiveness/airflow. Another common issue with typical HSF is that because the fan is directly on top, the heatsink's center is an air flow dead-zone.

      I have not seen them for myself but Intel's orb-like P4 HSF and their BTX reference design seem like good examples of proper designs, they both provide some clearance and avoid dead-zones.

    64. Re:In case of slashdotting by Anonymous Coward · · Score: 1, Informative

      "Oil doesn't conduct"

      Wrong. Everything conducts. Just certain things have much higher inate resistance properties. Like Oil :)

    65. Re:In case of slashdotting by Nefarious+Wheel · · Score: 1
      I think an electrostatic potential could be used to break up the near-surface boundary layer of heated air on a heat sink fin instead of a fan, couldn't it? You'd have to worry a bit on how to remove the static charge (ZAP goes the chipset) but your convective heat dissipation would be more efficient, maybe enough to get rid of the fan.

      Sorry, can't verify this principle ... old magazine article read a few decades ago.

      --
      Do not mock my vision of impractical footwear
    66. Re:In case of slashdotting by SuprCzr · · Score: 1

      even better, steam blowing past it, due to steam's much higher specific heat capacity.

      --
      SUPRCZR
    67. Re:In case of slashdotting by Circlotron · · Score: 1

      "Water would be better if it didn't tend to let the electrons go wherever they wanted"
      I seem to remember that one of the reasons that you put the green stuff in your car radiator water is to reduce or eliminate it's electrical conductivity, thereby stopping current flow between dissimilar metals such as aluminium and iron causing corrosion. Maybe water + green stuff = computer coolant too?

    68. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      Well, oil is a hell of a lot safer than tub full of something similar to freon

    69. Re:In case of slashdotting by +InvaderSkoodge · · Score: 1

      "I'd say the biggets problem with this is making sure the plastic in all the components is oil-compatible, i.e. doesn't degrade or dissolve. The bottoms of most shoes do, as anyone knows who stepped in a puddle of oil in a garage."

      Or anyone who works in a fast food place.

    70. Re:In case of slashdotting by mike518 · · Score: 1

      Also, loading a fan by making it spin in oil might make it use more power than normal, possibly overloading and overheating either the motor or the drive circuit, though the better cooling provided by the oil could alleviate that.

      id be more concerned with just wearing out the motor due to the heightened density the fins have to push threw.

      --
      Mike
      I heart the RIAA & MPAA, im sure its mutual...
    71. Re:In case of slashdotting by SagaLore · · Score: 0
      There is still the problem of removing the heat. If there is enough surface area to allow the heat to be removed then you are ok, otherwise the oil (and everything else) will get too hot. Encasing everything in a metal box with fins on the outside would probably keep things even cooler.


      Yea now that would be cool (literally+pun). Take a case and seal up every hole and slot there is, until it can permanently hold liquid. Then put in a fill hole in the top, and a plugged drain at the bottom of a side. Fill it up with oil. The whole side of the case could be a shallow heatsink.

      It would be a pain to change out parts though.
    72. Re:In case of slashdotting by the_bard17 · · Score: 1

      Yep. I'm not sure it reduces the conductivity to the point where you'd want to bathe electronics in it, however. I imagine it breaks down also, since "they" recommend changing it every so often (though if it sits at near room temp... *shrug*). Main purpose antifreeze has is just that... lower the freezing point of the coolant so that when the environmental temp. drops below freezing, the coolant doesn't freeze too, and split your block in the process. It also raises the boiling temp, preventing the coolant from becoming steam.

    73. Re:In case of slashdotting by boomfart · · Score: 1

      There was a story a while ago about some guy that used at tank of liquid Flurocarbon cooled with dry ice, the flurocarbon started to freeze before getting really cold but the idea was good

    74. Re:In case of slashdotting by endoftheroadmatt · · Score: 1

      Ah digital, where 1 is 1 and 0 is 0 :) Point taken.

    75. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      Different polymers have different weaknesses. Some can dissolve in organic material such as vegetable oil.

    76. Re:In case of slashdotting by Kiryat+Malachi · · Score: 1

      USB hub sitting outside of the oil solves hot-swapping problems.

      --

      ---
      Mod me down, you fucking twits. Go ahead. I dare you.
      (I read with sigs off.)
    77. Re:In case of slashdotting by I_Smell_Tuna · · Score: 1

      I did this a few months ago. Here are some pics and a file explaining the experiment. I used dry ice to drop the temp even more. w00t http://68.58.200.72/oil

      --
      -Tuna
    78. Re:In case of slashdotting by B2382F29 · · Score: 1

      It is "Kelvin", not "degree Kelvin", the "degree" was dropped in 1967

      --
      Move Sig. For great justice.
    79. Re:In case of slashdotting by Anonymous Coward · · Score: 1, Interesting

      Classical black holes don't conduct. Even proper quantum black holes only radiate a fleeting amount of positrons and electrons and other charge carriers (a normal object at room temperature emits far more positrons, as occasionally an atom will get enough kinetic energy [1.1 MeV] to make a positron-electron pair, the lightest charge carrying pair).

      Anything that conducts only through positron-electron pair generation and has a black body temperature of less than a Kelvin is unlikely to emit a single quantum of charge in the lifetime of the sun.

    80. Re:In case of slashdotting by EightMillion · · Score: 1

      Actually, the duck in boiling water melted faster. Cool running water melted the duck faster than an oven set to 200 degrees. The whole point was that the density of a medium determines it's ability to conduct heat. Its just that you wouldn't thaw a duck in boiling water for various reasons I won't get into here.
      --
      sig

    81. Re:In case of slashdotting by InfinityBuffer · · Score: 1

      I believe steam has a lower heat capacity than water, however, the steam turning into liquid water will release more heat, and even then, the liquid water is at boiling point, melting it further.

    82. Re:In case of slashdotting by HardCase · · Score: 1

      But not on a motherboard - the characteristic impedance of the board can very from 35 ohms up to around 100 ohms without terrible problems. In a motherboard, there is excellent coupling between the trace and its adjacent plane, so the geometry between the two has the most significant (in terms of an order of magnitude) effect on the characteristic impedance. I hate to just toss out numbers without attribution, but it's what I do for a living, so I guess I'll just quote myself.

      Microwaves in a non-coupled transmission line, yes. 266MHz clock, DQ and DQS frequencies in a coupled transmission line, no. For them, electrical loading plays a much greater role in timing problems.

      -h-

    83. Re:In case of slashdotting by Nutria · · Score: 1

      The point isn't "this is how to boil ice cubes", but to demonstrate how thermodynamics can be counterintuitive.

      --
      "I don't know, therefore Aliens" Wafflebox1
    84. Re:In case of slashdotting by d474 · · Score: 1

      Either that, or I'm too dumb for slashdot.

      --
      Authority questions you. Return the favor.
    85. Re:In case of slashdotting by Gleenie · · Score: 1

      What's even more interesting is that pure water is a goog insulator. I have seen a very large (10MW range) generator cooled with pure water in contact with all the live machinery.

      But tap water has all sorts of stuff disolved in it, so don't try this at home!

      --
      -- Your mother uses Emacs.
    86. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      Not mineral but vegetable oil was used. No need to feed the petroleum mafia again...

    87. Re:In case of slashdotting by rjshields · · Score: 1
      ...jabbed a 1" hole in the drywall, and put the box in the next room...
      Yeah, I'm sure my neighbours would love to have my noisy ATX box in their bedroom!
      --
      In this world nothing is certain but death, taxes and flawed car analogies.
    88. Re:In case of slashdotting by Curtman · · Score: 1

      Yeah, I'm sure my neighbours would love to have my noisy ATX box in their bedroom!

      Haha, yeah definitely don't do that if you live in a bachelor suite.

    89. Re:In case of slashdotting by daikokatana · · Score: 1
      "and put the box in the next room"

      I've thought of this myself, but what do you do with the CDRom drives, DVD drives, USB ports etc... ?

      --
      http://jcsnippets.atspace.com/ - a collection of Java & C# snippets
    90. Re:In case of slashdotting by Curtman · · Score: 1

      but what do you do with the CDRom drives, DVD drives, USB ports etc... ?

      Take your pick. I didn't worry about that though (my only USB device is a mouse), and I probably only touch the cd drive once or twice a month. I routed the ATX power button to a switch on my desk, though I use that less frequently than the cd drive.. I bet you it wouldn't be too difficult to put an access panel in the wall, and put the mobo right in there with ventilation at the top to remove heat. Then you could even build a mini tower to hold your removable media drives, and run the cables for that through as well.

    91. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      8.34. I actually submerse my computer is the stuff. It makes it not work; I'm eccentric.

    92. Re:In case of slashdotting by knight_racer · · Score: 1

      "Water would be better if it didn't tend to let the electrons go wherever they wanted, its conductivity is 0.58" This is the conductivity of water with impurities(sp?). Pure H2O is not a good conducter of electricity, so if you could submerge the hardware in pure, distilled H2O, the you would be OK. Of course, you'd also be a really big science geek for achieving pure H2O. --Knight_racer

    93. Re:In case of slashdotting by Cili · · Score: 1

      Mercury is VERY expensive. It would also shortcircuit any circuitry it touches (liquid metal, you know?)

    94. Re:In case of slashdotting by hubs99 · · Score: 1

      Antifreeze or Ethylene Glycol is a di-alcohol which will still conduct electricity. The reason it is used in engines is due to its Increased boiling point and decrease freezing point. So it freezes in lower temps than water. It also boils at a higher temp meaning less overheating since it wont boil off. Oil has no alcohol units on it so it will not conduct electricity.

    95. Re:In case of slashdotting by circusboy · · Score: 1

      unfortunately, there are those of us who, due to the masters in the sysad building over there, can not reach coral cache links, as the firewall here blocks everything port that is non "normal" (that they have never heard of.)

      --
      -- it's ridiculous how many people misspell ridiculous... (damn, damn, damn...)
    96. Re:In case of slashdotting by Johnboi+Waltune · · Score: 1

      Unfortunately, it's bulky and heavy, and retails for US$1,300. I could see a professional sound engineer justifying the purchase of one of these, but it makes very little sense for anyone else. Then again, neither does dumping your computer in a vat full of oil. :)

      --
      "The advanced societies of the future will be driven by competing systems of psychopathology." -JG Ballard
    97. Re:In case of slashdotting by Hognoxious · · Score: 1

      Antifreeze often contains a rust inhibitor, I suppose that's what he was talking about,not the actual glycol itself.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    98. Re:In case of slashdotting by zev1983 · · Score: 1

      What you're saying is said in lengthier form here.

    99. Re:In case of slashdotting by Spetiam · · Score: 1

      Hmmm. Well, personally, I like the "did you know a cube tray full of room temp water will freeze more quickly than a tray of boiling hot water?" example better.

    100. Re:In case of slashdotting by Nutria · · Score: 1

      I like the "did you know a cube tray full of room temp water will freeze more quickly than a tray of boiling hot water?" example better.

      Does anyone not know that 22oC water will reach 0oC faster than 100oC water?????

      --
      "I don't know, therefore Aliens" Wafflebox1
    101. Re:In case of slashdotting by Spetiam · · Score: 1

      Oh freak on a leash... I meant "did you know a cube tray full of boiling hot water will freeze more quickly than a tray of room temp water?"

      What happens is that the boiling hot water evaporates much more quickly than the room temp water. Evaporation leads to loss of volume... so the tray of boiling hot water actually does freeze more quickly. Give it a try.

    102. Re:In case of slashdotting by Nutria · · Score: 1

      What happens is that the boiling hot water evaporates much more quickly than the room temp water. Evaporation leads to loss of volume... so the tray of boiling hot water actually does freeze more quickly. Give it a try.

      Seeing as how the boling water would probably deform the cheap plasic that ice trays are made of, I'd be kinda nervous. Are you old enough to remember metal ice trays?

      I wonder if the "amount" of boil makes a difference. I.e., it seems that water at a full boil would evaporate faster than "just starting to boil, just-reached 100oC" water.

      It's too bad that my freezer is full. Even if it wasn't, my wife would get pissed if I raised the temperature of the freezer like that.

      --
      "I don't know, therefore Aliens" Wafflebox1
    103. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      What the FUCK are you talking about ?

    104. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      So you're saying the dielectric constant of the pcb substrate is coupled to the internal impedance by microwave transmission frequencies?
      As long as there are no anamolous gradients in the positronic ohm generator, it just might work.

    105. Re:In case of slashdotting by Anonymous Coward · · Score: 0

      I like commas, too.

    106. Re:In case of slashdotting by petermgreen · · Score: 1

      yeah but whilst many heatsink/fan combinations have issues the fact is they are still smaller lighter and cheaper than an equivilent fanless arrangement.

      --
      note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
    107. Re:In case of slashdotting by InvalidError · · Score: 1

      I was not disputing that, I was simply pointing out that most HSFs have obvious flaws that make them much louder than they have to be and less effective than they could be.

      With BTX enforcing proper design to some extent, I am expecting BTX systems to be substantially quieter than equivalent ATX setups. Another benefit from BTX is that it imposes an intake/exhaust duct and this prevents hot air from looping within critical paths inside the case.

      Passive solutions are bulky and silent, HSF are smaller but do not have to be outrageously noisy when a few simple design rules can reduce the noise output by 10-30dB.

      Passive cooling of desktop chips will be futile soon enough, if the current trend continues, we will have 150W CPUs this year and possibly 200W ones next year. My next PC will probably feature the fastest thing under 100W... unless 100W turns out to be low-power expensive parts by then.

  2. Nothing to see here, move along. by Anonymous Coward · · Score: 4, Funny

    So if this thing overheats, does it deep fry itself?

    1. Re:Nothing to see here, move along. by WillAffleckUW · · Score: 4, Funny

      So if this thing overheats, does it deep fry itself?

      Do you want fries with your websurfing?

      Can we supersize it?

      --
      -- Tigger warning: This post may contain tiggers! --
    2. Re:Nothing to see here, move along. by UnknowingFool · · Score: 5, Funny

      If he used it as the webserver for these pictures, I would say the fire department is probably on it's way already.

      --
      Well, there's spam egg sausage and spam, that's not got much spam in it.
    3. Re:Nothing to see here, move along. by acrimony · · Score: 1, Funny

      Is that a huka in the background?! Now I understand where he got the idea: "I'm fried.. I'm on a computer.. How can I get the computer fried?" Another look might reveal it's acutally soaking in hash oil.

    4. Re:Nothing to see here, move along. by ArsonSmith · · Score: 0

      huh huh huh....

      websurf & turf

      huh huh uhh....cool.

      --
      Paying taxes to buy civilization is like paying a hooker to buy love.
    5. Re:Nothing to see here, move along. by zymurgyboy · · Score: 2, Funny

      Arrrrr. I don't know about that, matey. But if he be puttin' a pirated copy of Windows on there, he'll be all set for the boil he's deservin'.

      --
      If you never make mistakes, it's probably because you're not doing anything.
    6. Re:Nothing to see here, move along. by Jettro77 · · Score: 1

      Thats the funniest thing I've ever heard!!!

    7. Re:Nothing to see here, move along. by robertjw · · Score: 2, Funny

      If he used it as the webserver for these pictures, I would say the fire department is probably on it's way already.

      Or at least the guy making the fries at the local McDonalds.

    8. Re:Nothing to see here, move along. by Anonymous Coward · · Score: 0

      ding! fries are done!
      ding! fries are done!
      I gotta run!
      I gotta run!
      Would you like an apple pie with that!?
      Would you like an apple pie with that!?

    9. Re:Nothing to see here, move along. by ccbutler · · Score: 1

      i've seen allot of these mods on modding sites and the like. I have yet to see a submersive job done as cleanly as this one.

      Project Think Tank

      Project Think Tank (no reg required)

    10. Re:Nothing to see here, move along. by dilute · · Score: 1

      Good point, actually. It's a great hack, but I'm afraid that in practice it would be a huge fire hazard. Ever see an oil filled capacitor go up in smoke? Can you imagine if this somehow caught fire and the containment vessel broke?

    11. Re:Nothing to see here, move along. by Anonymous Coward · · Score: 0

      That should read "the fire department is on its way", not "it's". It's been a long day for me...

  3. Wow by Anonymous Coward · · Score: 1

    Can someone please explain why this works? Why doesn't submerging it in oil just destroy all the parts on the motherboard?
    Can we do the same thing with water instead? ;

    1. Re:Wow by Anonymous Coward · · Score: 3, Insightful

      wagter connducts oil doesnt

      so it sucks if you want to use the unused slots

      at a later date

    2. Re:Wow by Anonymous Coward · · Score: 0

      Which components on the motherboard would you expect to be oil-sensitive?

    3. Re:Wow by Anonymous Coward · · Score: 1, Interesting

      Why doesn't submerging it in oil just destroy all the parts on the motherboard?

      Because mineral oil is (basically) electrically inert.

      Can we do the same thing with water instead?

      Well, you certainly can, but the only way I'd be involved is if I'm allowed to take pictures from a safe distance.

    4. Re:Wow by kennyj449 · · Score: 5, Interesting

      The reason that you can't submerge electrical parts in water is the simple fact that water is electronically conductive given the presence of electrolytes (which is so hard to guarantee against in practice, that you can rest assured that water is bad.) Many oils, however, are not electrically conductive. Therefore, as long as the medium used is electrically inert and does not chemically react with anything you're submerging in it, you can consider it a viable medium for immersion cooling assuming that heat transfer properties are favorable.

      This has been done before. Interestingly, some projects have looked to it for outdoor computer use (stationary) due to the water-repellant properties of many oils.

    5. Re:Wow by Anonymous Coward · · Score: 0

      Distilled water does not lead electricity.

    6. Re:Wow by Anonymous Coward · · Score: 0

      And once the distilled water hits the various components it is no longer pure, and will conduct.

    7. Re:Wow by dnoyeb · · Score: 2, Informative

      Yes, you can use water. Any non-conductive liquid will do. Of course tap water is conductive. you would have to use a very pure distilled water.

      The oil will certainly be more difficult on the fans, im not sure if it has any corrosive effect.

    8. Re:Wow by Pepsi__Blue · · Score: 5, Informative

      No, you can't use water because it will become conductive when almost any substance is added to it, such as the metal flakes coming off of computer parts, other microscopic contaminents, and even carbon dioxide which will cause the pH to change. On the other hand, mineral oil is a non-conductive liquid, there are several although mineral oil is definatly the cheapest. Also, water is corrosive whereas mineral oil is not. A while back there was an article about using 3M Novec 1230 (AKA Sapphire) for submerged cooling (the poster mentioned it but forgot to take into account the low energy needed for Novec 1230 to vaporize) read the comments for more info on why water will not work. FYI somewhere in there you can find a link to pics of a guy who tried using water and fried his UPS.

    9. Re:Wow by enrico_suave · · Score: 1

      "wagter connducts oil doesnt

      so it sucks if you want to use the unused slots

      at a later date"

      Actually, according to a post in his english forum, he's put in/replaced cards before with no ill-effect (supposedly). he's even removed a ram stick and put it in a non-submerged PC (although that's less of a feat)

      *shrug*

      rampy

      --
      Build Your Own PVR/HTPC news, reviews, &
    10. Re:Wow by Anonymous Coward · · Score: 0

      Yes, but distilled water will react with the metals and other substances making the computer components, leading to water full of conductive ions.

    11. Re:Wow by Anonymous Coward · · Score: 0

      True, but distilled water with a computer in it will get a fair amount of ions in it rather quickly.

    12. Re:Wow by Anonymous Coward · · Score: 3, Funny


      Can we do the same thing with water instead?

      So *YOUR* the reason my Hairdryer has that warning label saying "Do not use while taking a shower". Wow, i thought you people were a Myth. =)

    13. Re:Wow by davi_bock · · Score: 1

      I think ultrapure water would leech ions from any exposed metal and become conductive. No good.

    14. Re:Wow by Anonymous Coward · · Score: 0

      In theory, you could use pure H2O instead of oil but I don't think you would want to. Water by itself is not conductive but corrosive.

    15. Re:Wow by Anonymous Coward · · Score: 5, Insightful

      The problem with using "very pure" water is that it wants to become impure in the worst way. It's astonishingly reactive stuff.. It will suck atoms of carbon, silicon, and copper off a motherboard in its quest to become impure. And then, at some point, it starts conducting, and you're screwed.

      So, you're partially right- you could use very pure water (for a very short time) until it managed to eat enough impurities to start conducting again.

    16. Re:Wow by istartedi · · Score: 1

      The oil will certainly be more difficult on the fans, im not sure if it has any corrosive effect

      Well, at least lubrication won't be a problem. :)

      --
      For all intensive purposes, "whom" is no longer a word. That begs the question, "who cares"?
    17. Re:Wow by Tim+C · · Score: 1

      And as others have pointed out, that corrosive action tends to add electrolytes to the water, thus making it conductive...

      *Pure* water is electrically non-conductive. Pure water *doesn't stay pure* for very long.

    18. Re:Wow by Anonymous Coward · · Score: 0

      It is unlikely that contamination would cause problems. The only concern would be migration of electrolytes from the electrolytic capacitors. Many capacitors are sealed these days to allow the boards to be cleaned after manufacture but looking at these pictures I doubt the ones on his MB and PS are washable. Although no immediate damage is likely it could cause accelerated power quality issues into the future.

    19. Re:Wow by Pepsi__Blue · · Score: 1

      You are correct, but by contamination, I ment some substance that would cause the non-conductive, pure water to become conductive. For example, if salt was added (Don't you hate sweaty hands?) NaCl would seperate in the water and Na2+ would become slightly attracted to the negative end of H2O, and Cl2- would become sligtly attracted to the positive end of H2O. These ions would then conduct a charge making the water conductive. Anyways, you are right and I should have used a better choice of words.

    20. Re:Wow by digitalFX · · Score: 1

      It may also be worth noting that Novec 1230 becomes acidic if it comes into contact with moisture (even from the air) with time, so unless you have a dryer system on it also it would probably eventually start eating away at the board.

    21. Re:Wow by Anonymous Coward · · Score: 0

      It's Na+ and Cl-.

    22. Re:Wow by Alsee · · Score: 5, Funny

      Just imagine how efficently you could carry heat away if you submerge the motherboard in mercury!

      Oh wait...

      -

      --
      - - You can't take something off the Internet! That's like trying to take pee out of a swimming pool.
    23. Re:Wow by lee1026 · · Score: 1

      Na only have a +1 charge and Cl only have a -1 charge. the Na and Cl ions will conduct electricty, meaning that the board will get shorted. But coming to think of it even pure water should be somewhat conducting because it would self ionize. peobably not enough ions to do anything though.

    24. Re:Wow by Pepsi__Blue · · Score: 1

      Lol, wow teaches me to try to type comments while carrying on conversations with IM, talking on the telephone, and playing tetris. God that game never gets old...

    25. Re:Wow by stealthcat42 · · Score: 1
      It will suck atoms of carbon, silicon, and copper off a motherboard in its quest to become impure.
      I never knew what a slut Water is! I'm sticking to gatorade from now on.
    26. Re:Wow by d474 · · Score: 1
      Can we do the same thing with water instead?
      So *YOUR* the reason my Hairdryer has that warning label saying "Do not use while taking a shower". Wow, i thought you people were a Myth. =)
      So *YOU'RE* the reason we proof read our posts for grammer errors. Oh, I forgot this was /.
      --
      Authority questions you. Return the favor.
    27. Re:Wow by Anonymous Coward · · Score: 0

      So *YOU'RE* the reason we proof read our posts for *GRAMMAR* errors. Oh, I forgot this was /.

  4. Not submerged... by Chicane-UK · · Score: 5, Funny

    he only thing not submersed in oil is the hard disk.

    And what about the CDROM drive eh, eh?! :)

    --
    "Hey! Unless this is a nude love-in, get the hell off my property!!"
    1. Re:Not submerged... by dnoyeb · · Score: 1

      the only thing not submersed in oil is the hard disk.

      Ironic.

    2. Re:Not submerged... by Anonymous Coward · · Score: 0

      Any optical disk tray submerged in oil would make a pretty crappy cup holder.

    3. Re:Not submerged... by starfishsystems · · Score: 1

      At least it makes sense not to immerse removable media. But what's wrong with immersing the disk drives? The drive enclosure is hermetically sealed, no?

      --
      Parity: What to do when the weekend comes.
    4. Re:Not submerged... by Anonymous Coward · · Score: 0

      no

      Look at the little vent hole they put on it -
      "Do NOT cover this hole."

    5. Re:Not submerged... by Random832 · · Score: 1

      vent hole? hard drives are sealed to not let dust in - there are no holes.

      --
      We've secretly replaced Slashdot with new Folgers Crystals - let's see if it notices.
    6. Re:Not submerged... by Lord+Maud'Dib · · Score: 1

      Behind these holes there is a filter. Every HDD I've ever seen has these holes and if you haven't seen one then look again.

    7. Re:Not submerged... by Anonymous Coward · · Score: 0

      No, it isn't

    8. Re:Not submerged... by fLameDogg · · Score: 1
      Are you sure? Read this ps0t:

      http://groups-beta.google.com/group/comp.sys.lapto ps/msg/66a9a845f6de6626?hl=en

      If you're still not convinced, Google for "hard drive vent".

      --
      fD
    9. Re:Not submerged... by kosmicki · · Score: 2, Informative

      Hermetically sealed, yes, airtight, no. They have to be able to let pressure vent for altitude change. Also, if it had a tiny leak.... Hard Disk Drives need air to work, the spinning motion of the platter creates a cushion of air that the read/write head rides on. If something got on the platter you can bet the drive will be destroyed.

    10. Re:Not submerged... by Tim+Doran · · Score: 1

      Better yet - if you haven't seen one, jam a screwdriver in there until you do!

    11. Re:Not submerged... by Izmunuti · · Score: 4, Informative

      Nope. They have small holes to let air move in and out. There's a filter behind the hole. There are often bigger holes behind warranty-void-if-removed stickers.

      The heads are design to fly over the platters on an air bearing so disc drives don't work in either a vacuum or in oil.

      But, the holes are small and oil viscous. It might run for a while. Maybe someone with a PC-in-a-tank and an old hard drive could experiement to see how long one lasts.

      Iz

    12. Re:Not submerged... by stor · · Score: 1

      vent hole? hard drives are sealed to not let dust in - there are no holes.

      Except that hole that's labelled "Do not cover this hole".

      Other than that you're right: no holes whatsoever.

      Cheers
      Stor

      --
      "Yeah well there's a lot of stuff that should be, but isn't"
    13. Re:Not submerged... by Anonymous Coward · · Score: 0

      Can't find that label on my Maxtor drive.

    14. Re:Not submerged... by Anonymous Coward · · Score: 2, Funny

      You could put little snorkels over the holes on the disk drive to allow air into them.

    15. Re:Not submerged... by mattdm · · Score: 1

      Hermetically sealed, yes, airtight, no.

      Um, you may wanna look up what "hermetically sealed" means.

    16. Re:Not submerged... by Anonymous Coward · · Score: 0


      "Fluid dynamic bearing"?

    17. Re:Not submerged... by Anonymous Coward · · Score: 0


      I learned what "hermetically sealed" meant when I was about 10 or 11, playing that spooky old game Transylvania on Apple II. Dracula's coffin was hermetically sealed. The problem was, this game was a simple copy from one 5.25" floppy to another, and the cruel copy protection would not allow you to finish the game on such a version. I didn't find this out until yeeeaars later.

    18. Re:Not submerged... by kosmicki · · Score: 1

      Holy hell. What a brain fart. What word did I think that ment...

    19. Re:Not submerged... by mattdm · · Score: 1

      *grin*

  5. Apologies to AC/DC, but by martensitic · · Score: 1, Funny

    Baby, what you want, it's the way she move [Baby, feel what you want] Feel what you need, come on let's go [Baby, feel what you need] Cover you in oil I wanna cover you in oil [Let me cover you in oil] Let me cover you in oil [I wanna cover you in oil] Cover you in oil [Let me cover you in oil] [Yeah]

    --
    Ut Tensio, Sic Vis
  6. Damn! by Locke2005 · · Score: 4, Funny

    Mineral oil?!? I'll bet all his fish are dead!

    --
    I've abandoned my search for truth; now I'm just looking for some useful delusions.
    1. Re:Damn! by cshark · · Score: 1

      Yes, and his poor turtles are homeless.

      --

      This signature has Super Cow Powers

    2. Re:Damn! by Anonymous Coward · · Score: 0
      yes! it's really a computer completely in vegetable oil!
      Actually, the submitter didn't RTFA, it's vegetable oil.
    3. Re:Damn! by dr_dank · · Score: 1

      If he used castor oil, the fish would have just crapped themselves.

      --
      Where does the school board find them and why do they keep sending them to ME?
    4. Re:Damn! by easttuth · · Score: 1

      They would have been eaten by the fans anyhow...

    5. Re:Damn! by stuffman64 · · Score: 1

      The website clearly states that it is vegetable oil, the submitter should have R'd the FA...

      --
      --- At my sig, unleash hell.
    6. Re:Damn! by Rorschach1 · · Score: 1

      Not at all.

      He's got a rockfish.

    7. Re:Damn! by RevAaron · · Score: 1

      *phew* that's a relief! fish can live in veggie oil, after all.

      --

      Working toward a usable PDA environment in the spirit of Newton OS: Dynapad
    8. Re:Damn! by rubycodez · · Score: 1

      mmmm, unprocessed fish sticks in oil

    9. Re:Damn! by Anonymous Coward · · Score: 0

      So long, and thanks for all the fried fish!

    10. Re:Damn! by jrockway · · Score: 1

      No they can't.

      --
      My other car is first.
  7. His Server.... by nathanmace · · Score: 1, Funny

    From the looks of things, maybe his server could use some cooling. :-) Looks like I might have the first post, and the link posted above is already gone.

    --
    I'm very responsible, when ever something goes wrong they always say I'm responsible.
    1. Re:His Server.... by Anonymous Coward · · Score: 0

      YOU FAIL IT!!

  8. Reported previously by ThePlague · · Score: 5, Informative

    This has been done before, as reported by slashdot almost six years ago. Of course, the guy in the '99 story used a styrofoam cooler, while the newer one upgraded to an aquarium, so I guess progress marches on!

    1. Re:Reported previously by m_c_rose · · Score: 1

      The guy in the ealier story also added refrigeration to the mix.

    2. Re:Reported previously by Anonymous Coward · · Score: 0

      Oh, and this one is submerged in vegetable oil rather than mineral, completely different! They should patent it, no really.

    3. Re:Reported previously by _Sharp'r_ · · Score: 1

      Below is the full text of the linked version of the article, including the non-existent (because they were not cached) pictures:

      These are the pictures of my oilcomputer: (at the end, there are some pictures of the oilcomputer of a friend of me)

      Hi, in the "forum"-section on the left ist now also an english-speaking discussions-board available. I will translate the whole site into english tomorrow.

      Hier sind die Bilder vom Ölrechner meines Kumpels:


      Perhaps in the future (say, 10-20 years out?) we'll get better links in the summary....

      --
      The party of stupid and the party of evil get together and do something both stupid and evil, then call it bipartisan.
    4. Re:Reported previously by gstoddart · · Score: 5, Funny
      This has been done before, as reported by slashdot almost six years ago [slashdot.org].

      well, given the regularity of dupes around here, I'll go out on a limb and say as dupes go, this one is at least new to most of us.
      --
      Lost at C:>. Found at C.
    5. Re:Reported previously by tourvil · · Score: 2, Insightful
      6 year old stories aren't dupes, they're trips down memory lane. I remember that old slashdot article from back when I was in college.

      Ah, the memories... *sniff*

    6. Re:Reported previously by SquadBoy · · Score: 1

      God was it that long ago?
      I feel old. /me gets on his rascal and goes to yell at the kids down at the park.

      --

      Cypherpunks: Civil Liberty Through Complex Mathematics. Those who live by the sword die by the arrow.
    7. Re:Reported previously by Easy2RememberNick · · Score: 3, Funny

      Give the guy a break he just got back from the Time Travellers Convention! It was him six years ago ;)

    8. Re:Reported previously by Anonymous Coward · · Score: 1, Informative

      ...and it was done 10 years ago by Digital, with an Alpha cpu. Boy, was I surprised when I realized that the mainboard in the aquarium was actually connected to that huge 15" monitor...
      It took me a full minute to reach the conclusion that it was the aquarium was filled with trafo oil...

    9. Re:Reported previously by PaulBunion · · Score: 1

      Actually old Crays were cooled by being immersed in fluorocarbons - supposedly inert. I remember going out to Cray in Mendota Heights about a "leetle problem" with this. They actually had the system hooked up in a sort of "fountain" that looked very cool. I am sure the marketeers loved it...

    10. Re:Reported previously by kd5ujz · · Score: 1

      yeah they used a chemical called fluorinert made by 3M. To do tests on the machine, they would drain the tanks, and remove the modules. to simplify moving proves around on the board, they would only cycle power to the modules for a few milliseconds, else run the risk of burning them up.

      --
      -William
      God is everything science has yet to explain.
    11. Re:Reported previously by PaulBunion · · Score: 1

      yep, I was working for 3M at the time...

  9. messy... by sznupi · · Score: 2, Insightful

    I'll keep the convenience of clean messing inside my current, completely quiet, oil-free PC, anyday.

    --
    One that hath name thou can not otter
  10. 0ld newsies by ickleberry · · Score: 0, Informative

    Didnt some guy do this last year, and overclocked his 2ghz P4 to 4ghz? i wonder how fast his cd rom drives are submerged in mineral oil ;)

  11. New Headline by Boolio · · Score: 5, Funny

    New Headline: Slashdot effect causes need to change the oil........

    1. Re:New Headline by Anonymous Coward · · Score: 1, Funny

      Something tells me this somehow started when someone from accounting was asked to make a purchase order for a router from a company named Crisco Systems.

    2. Re:New Headline by Short+Circuit · · Score: 1

      The server looks at the Refferrer-ID for the first few HTTP requests.

      "Oh sh1t!"

  12. Slick! by MisanthropicProgram · · Score: 3, Funny

    'Nuff Said

  13. Is he trying out for a new Jackass movie? by winkydink · · Score: 4, Informative

    Mineral Oil is not nice stuff

    Did you see the parts about flammable and a respiratory hazard?

    What's next? A guy who uses gasoline for liquid cooling?

    May I recommend Fluorinert FC-70?

    --

    "I'd rather be a lightning rod than a seismometer." -Ken Kesey

    1. Re:Is he trying out for a new Jackass movie? by jebell · · Score: 5, Funny
      Mineral Oil is not nice stuff

      It makes a good laxative.

      --
      This is my sig. There are many like it but this one is mine.
    2. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0

      Dude, MSDS'es are such Naderist paranoia it's not even funny. Look up ethanol sometime.

    3. Re:Is he trying out for a new Jackass movie? by superid · · Score: 3, Informative
      There was a fluorinert story here on /. within the past few years but I'm too lazy to go look for it

      In that one, it said the stuff cost over $1k/gal.

    4. Re:Is he trying out for a new Jackass movie? by imsabbel · · Score: 1

      He uses vegetable oil.

      Try RTFA

      --
      HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
    5. Re:Is he trying out for a new Jackass movie? by Is0m0rph · · Score: 1

      Auto flash on mineral oil is 500-700 degrees F. If your motherboard is running that hot you've got other problems to begin with.

    6. Re:Is he trying out for a new Jackass movie? by WolfWithoutAClause · · Score: 1
      Even worse, check out sand.

      Apparently people should only play on the beach in positive pressure respiration equipment, and sand pits for kids; what are you nuts? :-)

      Whilst silicosis is a real disease, and lots of people have actually died of ethanol toxicity, I'm not entirely sure that somebody isn't having a laugh at us when I read these sheets.

      --

      -WolfWithoutAClause

      "Gravity is only a theory, not a fact!"
    7. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0
      Try RTFA
      Yeah so should the submitter.
    8. Re:Is he trying out for a new Jackass movie? by LWATCDR · · Score: 3, Insightful

      Mineral Oil not that toxic. They used to use it for a laxative.
      Unless you make a mist of it you really do not need to worry a lot about it as a respiratory hazard and the flash point is higher than the boiling point of water so the fire is not that much of a hazard. Nothing like gasoline.

      What this would be really good for is a remote mesh node. Use something like an old ammo can for the case and fill it with mineral oil. The entire metal case would then act as a heat sink and the oil would protect the board from corrosion.
      For a home system? Well it is kind of cool I guess.
      Fluroinert? Last I heard that cost a small fortune.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    9. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0

      Exactly. I was trolling/joking -- mineral oil really isn't suitable for this application for safety and other reasons -- but my point stands. MSDS sheets are written by lawyers, not chemists, so they are next to worthless at their intended purpose, which is enabling people to make rational decisions about material safety.

    10. Re:Is he trying out for a new Jackass movie? by winkydink · · Score: 1

      What article? It's a bunch of fucking green-tinted pictures and one line of German that says, "Hier sind die Bilder vom Ölrechner meines Kumpels:"

      Maybe that says, "it's vegetable oil", but you know what? I don't speak German.

      --

      "I'd rather be a lightning rod than a seismometer." -Ken Kesey

    11. Re:Is he trying out for a new Jackass movie? by fafalone · · Score: 5, Informative

      Health Rating: 1 - Slight Flammability Rating: 1 - Slight Reactivity Rating: 0 - None Contact Rating: 1 - Slight Looks like very nice stuff to me, considering lots of common chemicals have higher hazard ratings. If you're going to link to something sophistcated like a MSDS, at least know how to properly interpret it.

    12. Re:Is he trying out for a new Jackass movie? by stevesliva · · Score: 5, Funny
      " Material is a cathartic and can cause serious diarrhea. Nausea and vomiting may also occur and possibly abdominal cramping. "
      Sounds like Taco Bell.
      --
      Who do you get to be an expert to tell you something's not obvious? The least insightful person you can find? -J Roberts
    13. Re:Is he trying out for a new Jackass movie? by poot_rootbeer · · Score: 1


      Yah but Fluorinert is EXPENSIVE. Even compared to filling up a fishtank with gallons of mineral oil.

    14. Re:Is he trying out for a new Jackass movie? by Otter · · Score: 1
      Every MSDS looks that scary -- here's the one for sodium chloride.

      Genomics labs used to routinely use mineral oil at 95 C to prevent evaporation of PCR plates -- there's no real respiratory hazard, and your CPU shouldn't be running even that hot. (Although for all I know, maybe the new ones do...)

    15. Re:Is he trying out for a new Jackass movie? by lilmouse · · Score: 1, Informative

      Oh come on - have you seen the Material Data Safety Sheet for Isopropyl Alcohol (aka "rubbing alcohol")?

      http://www.ofite.com/msds/280-10.pdf

      Yes, it's flammable, and yes it's not good for you to breath it. So don't throw burning torches in your fishtank while you swim in it!!

      --LWM

    16. Re:Is he trying out for a new Jackass movie? by jeffy210 · · Score: 0

      Combustible, eh... Wonder what it would look like if you dropped a match in there :)

      --
      ------
      "And may your days be long upon the earth."
    17. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0

      Click on "Oilcomputer". Then after a German disclaimer and a photo, it's English. Holy shit, I feel like an investigative journalist! (Fucktard)

    18. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 2, Insightful

      You have to remember these sheets are mainly for people who work with large amounts of these materials every day. Visit a sand blasting site or a processing plant and you'll see clouds of this shit smothering everything. Sand blasting uses fine sand that becomes even smaller from hitting the surface and it forms clouds that can easily be breathed in without particulate protection. They have to write MSDS with the worst case scenarios in mind.

    19. Re:Is he trying out for a new Jackass movie? by AaronStJ · · Score: 0

      1) He's actually using vegetable oil. Slashdot was wrong again.

      2) Did you even read the MSDS? Mineral oil is pretty darn safe. They make baby oil out of it for Christ's sake!

      --
      Stupid like a fox!
    20. Re:Is he trying out for a new Jackass movie? by whoda · · Score: 1

      it used to be around $100/gallon....USED.

    21. Re:Is he trying out for a new Jackass movie? by WolfWithoutAClause · · Score: 1

      Yes, but I wasn't. The safety of mineral oil is quite high, it's difficult to ignite and generally requires a wick or vapourisation. In this application where everything is submerged it's very difficult for me to see how anything bad can happen.

      --

      -WolfWithoutAClause

      "Gravity is only a theory, not a fact!"
    22. Re:Is he trying out for a new Jackass movie? by eth1 · · Score: 1
    23. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0

      Ahhh. Lets hope that does not make it to goatse.

    24. Re:Is he trying out for a new Jackass movie? by blueg3 · · Score: 1

      Fortunately the combustion and flash points of mineral oil are fairly high -- considerably higher than you'd want to run a CPU at. Assuming you're keeping track of temperatures somewhere near where your CPU is, and figuring that the oil is hottest there, if you're halfway clever you shouldn't run the risk of causing it to combust.

      IIRC, though, mineral oil is not scentless. I wouldn't want that oil vapor around. This sort of thing should be sealed and treated carefully. Sealing it, though, would require some way to remove heat from the system. (I'm thinking a glass computer case with plenty of fans inside filled with mineral oil. Should allow for plenty of conduction through the glass walls + radiative heat loss, though it could end up being too hot for the CPU and certainly warm to the touch.)

    25. Re:Is he trying out for a new Jackass movie? by Short+Circuit · · Score: 2, Informative

      It roughly translates to, "Here are pics of my buddy's computer."

      In other words, the rest of the pics aren't his machine, they're someone else's.

    26. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0

      Does that mean his computer will blue-mould?

    27. Re:Is he trying out for a new Jackass movie? by kabocox · · Score: 1

      May I recommend Fluorinert FC-70?

      For new customers, 1 liter bottle ~ 4 lbs = $240 plus shipping. Existing customers pay $220 for 1 liter.
      http://www.parallax-tech.com/fluorine.htm

    28. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0

      Thanks but I've got a cold and spent all day on the toilet already you insensitive clod :p

    29. Re:Is he trying out for a new Jackass movie? by imsabbel · · Score: 4, Informative

      Sorry, i actually came here after i got a REAL link from in the forum of storagereview.
      The forum still works, and he tells even in english how it works.

      Here is the forum:
      http://www.markusleonhardt.de/forum/viewforum.php? f=7&sid=406dcf24b6cfb74d63f7fe6342a98e1e

      --
      HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
    30. Re:Is he trying out for a new Jackass movie? by RevAaron · · Score: 1

      Morphine isn't that toxic. They used to and continue to use it for an effective pain killer, cough supressant and anti-diahreal medicine. Must not be toxic then, huh?

      --

      Working toward a usable PDA environment in the spirit of Newton OS: Dynapad
    31. Re:Is he trying out for a new Jackass movie? by winkydink · · Score: 1

      No worries. Thanks!

      --

      "I'd rather be a lightning rod than a seismometer." -Ken Kesey

    32. Re:Is he trying out for a new Jackass movie? by LWATCDR · · Score: 1

      Mineral Oil==Gasoline?
      Mineral Oil==Morphine?

      Please. But even if Morphine and Mineral oil are equally toxic I would not worry about using it for a cooling fluid.

      BTW Here is the MSDS for Ethyl alcohol.
      http://ptcl.chem.ox.ac.uk/MSDS/ET/ethyl_alcohol.ht ml I suggest if mineral oil worries you you should flee to the hills at the sight of a beer.
      Here is the one for Oxygen http://www.vngas.com/pdf/g1.pdf I suggest you start holding your breath.. That stuff can kill you.

      Good grief people get a grip. Yea you should not put mineral oil in a paint sprayer and try and light it or breath it. I would also suggest that doing the same thing with vodka, beer, olive oil, or sunflower oil would also be a bad idea. Using it to cool your motherboard? While messy is not very dangerous.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    33. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0

      When I was little I had a problem with... well, let's just say things were not moving. As part of my medical treatment for this, for a little while, I was ingesting a tablespoon of mineral oil every day.

      So, it's not THAT toxic.

    34. Re:Is he trying out for a new Jackass movie? by Puff+Daddy · · Score: 1

      It isn't. For proof, go get some morphine. Take it. Hell, take twice the dosage. Three times if you're into that sort of thing. Dead yet? Nope, I thought not. Morphine isn't that toxic. You can try to confuse the issue by pointing out that overdose is possible, but it's also possible to OD on nutmeg. Next time you're going to try to be sarcastic, try not to be an idiot, too.

    35. Re:Is he trying out for a new Jackass movie? by swv3752 · · Score: 1

      There are problems with your cooling setup if an Athlon64 is over 50C. A P4 shouldn't be over 65C. I think they both fail at about 90C.

      --
      Just a Tuna in the Sea of Life
    36. Re:Is he trying out for a new Jackass movie? by Qeyser · · Score: 1
      I, too, am too lazy to look for the story, but IIRC . . .


      The guy bought a couple of gallons of the stuff and submerged his mobo in a styrofoam tank. For cooling, he ran the Fluorintert through an A/C compressor. It worked really, really well, until the fluid got so cold that it gelled, and clogged the A/C.

    37. Re:Is he trying out for a new Jackass movie? by Tim+C · · Score: 1

      The CPU definitely shouldn't run that hot, but I have an MSI GeForce 6800GT that regularly gets up to around 120C under load (according to the temperature sensor at least).

      Yes, I probably do need some case fans...

    38. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0

      Actually using mineral oil as a laxative is a really bad idea, you will develop pnemonia from it. My dad tried it. He had a horrible cough for months, the doctor couldn't figure out why. Turns out it was the mineral oil he had been taking.

    39. Re:Is he trying out for a new Jackass movie? by AaronGTurner · · Score: 2, Informative
      They used to use it for a laxative.

      Many laxatives have their laxative effect due to toxicity. The laxative effect generally comes at a lower dose than the dose required to cause serious and irreversible damage. In fact cyanides (in low doses) has been used as a laxative, and I wouldn't call those non toxic!

    40. Re:Is he trying out for a new Jackass movie? by mesach · · Score: 2, Informative

      DAMN, ya'll(speaking to the other commenter also) must be lazy, as its the ONLY article when you do a search for Fluroinert

      --
      moo.
    41. Re:Is he trying out for a new Jackass movie? by Lihtan · · Score: 1

      ...What's next? A guy who uses gasoline for liquid cooling?

      Gasoline is only combustible if its vapors are mixed with oxygen. Submerging electronics in gasoline isn't actually a problem (other than it being a really good solvent). The in-tank fuel pump in your car is an electric motor that is submerged in, and cooled by gasoline.

      --
      Divide by zero hurts my brain.
    42. Re:Is he trying out for a new Jackass movie? by macdaddy · · Score: 1

      Ideally you'd buy a small circulation pump like what you'd buy for a typical water-cooled heatsink and pick up a small radiator at the salvage yard. A small ATF radiator would do nicely. Add a couple 120mm fans to the backside of that and you've got your cooling problem nixed.

    43. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0


      That makes absolutely no sense whatsoever, unless you dad was inhaling the stuff.

    44. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0


      He could recreate the Wonka factory set from the movie in miniature and give birth to a whole new generation of Slashdot shock trolls. Now we just need a fat German kid to throw in the river.

    45. Re:Is he trying out for a new Jackass movie? by Anonymous Coward · · Score: 0
      • Next time you're going to try to be sarcastic, try not to be an idiot, too.
      You're my new hero!
    46. Re:Is he trying out for a new Jackass movie? by bperkins · · Score: 1

      Have you ever looked at the MSDS for sodium chloride?
      http://www.jtbaker.com/msds/englishhtml/S3338.htm

      Or silicon dioxide?

      http://physchem.ox.ac.uk/MSDS/SI/silicon_dioxide.h tml

      You might never go to the beach again!

      Mineral oil is ignitable, but you'll have trouble lighting it unless it's sprayed somehow or gets heated to well over boiling (its flash point is 135 C). By that point it's quite hazardous for being a lot of hot oil.

    47. Re:Is he trying out for a new Jackass movie? by i41Overlord · · Score: 1

      " Material is a cathartic and can cause serious diarrhea. Nausea and vomiting may also occur and possibly abdominal cramping. "

      Sounds like Taco Bell.


      Taco Bell wouldn't work very well because the heat transfer rate of a burrito isn't very good. Even with a nachos supreme thrown in, it wouldn't provide adequate cooling.

    48. Re:Is he trying out for a new Jackass movie? by Wog · · Score: 1

      Mineral Oil==Gasoline?
      Mineral Oil==Morphine?

      So Gasoline==Morphine?

      *goes off to find syringe*

    49. Re:Is he trying out for a new Jackass movie? by RevAaron · · Score: 1

      Give me the morphine and I'll happily take it.

      The point wasn't that morphine at any dose is toxic. The point was at the right dose it is. As you point out, you can even OD on nutmeg. ... Just like mineral oil! Sure, you can take a little to help give you the runs, and at that dosage it isn't going to kill you. But inhaling vaporized mineral oil for an extended period (e.g. the 10 hours a day this bloke may be at his machine) may not be the best idea.

      Next time you're going to try to be a superior asshole, try to have a handle on what you trying to tear down. Maybe my point was a little obtuse, but now that I've explained it in more detail, I hope you understand.

      --

      Working toward a usable PDA environment in the spirit of Newton OS: Dynapad
    50. Re:Is he trying out for a new Jackass movie? by Hognoxious · · Score: 1
      So don't throw burning torches in your fishtank while you swim in it!!
      Swimming in it wouldn't be an issue; with a specific gravity of 0.79, I suspect most people would sink & drown.
      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    51. Re:Is he trying out for a new Jackass movie? by Hognoxious · · Score: 1

      Those aren't dangerous. Pah! The first one sounds like it's practically edible! You want to see a really dangerous substance?

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
  14. Interesting by apg88 · · Score: 1

    Very interesting system. Would this work for all electronics, not just computers? This was on digg last week.

    1. Re:Interesting by Beardo+the+Bearded · · Score: 1

      In theory, it would work for all (most?) electronics. The trick is to get a non-conductive medium with a greater heat transfer coefficient than air. If it doesn't conduct it doesn't short anything. If it dissipates heat faster than air, then it works better.

      The actual thermodynamics involved are a little trickier than that, since the motion of the fluid changes the transfer characteristics. Moving air can be 5 or more times more efficient at moving heat than non-moving air.

      You could use distilled water and it might work, but the water would have to be very pure and your balls would have to be very brassy.

      --

      ---
      ECHELON is a government program to find words like bomb, jihad, plutonium, assassinate, and anarchy.
    2. Re:Interesting by maotx · · Score: 1

      Except for the fact that water is corrosive...

      --
      I'm a virgo and on Slashdot. Coincidence? Yes.
    3. Re:Interesting by Short+Circuit · · Score: 1

      You could use distilled water and it might work, but the water would have to be very pure and your balls would have to be very brassy.

      And the surfaces inside your computer very, very clean. If something disolves, and you wind up with ions in your water, well, it now conducts. :)

    4. Re:Interesting by Beardo+the+Bearded · · Score: 1

      I never said it was a GOOD idea. I said you COULD do it. ;)

      --

      ---
      ECHELON is a government program to find words like bomb, jihad, plutonium, assassinate, and anarchy.
  15. Is this for real?? by Anonymous Coward · · Score: 0

    Come on, this had better not be a prank. I'm going to try dropping my motherboard into oil right now, this had better work!

    1. Re:Is this for real?? by Anonymous Coward · · Score: 0

      Bye!

  16. back in 96 by frizop · · Score: 1

    I herd about somebody doing this with a old celeron 300mhz? Stuck it in a cooler, and overclocked it. I don't recall how fast he got it, but it was crazy.

    1. Re:back in 96 by CdBee · · Score: 1

      Cel300 was ludicrously overclockable even with regular air-cooling - 450mhz was common, 600 isn't unknown if you had a good one.

      --
      I have been a user for about 10 years. This ends Feb 2014. The site's been ruined. I'm off. Dice, FU
    2. Re:back in 96 by Anonymous Coward · · Score: 0

      Oh cool, I didn't know anyone else hurd that.

    3. Re:back in 96 by Short+Circuit · · Score: 1

      I thought it depended on if your model had a cache or not. I know the first model of Celeron didn't...that was one of the reasons it was so cheap.

      I've got a Celeron 300 at home, but no board to put it in. Don't know if it's worthwhile.

    4. Re:back in 96 by Mancat · · Score: 1

      That's nice, considering that the Celeron didn't exist in '96 :) I do remember hearing about this being done back in '98-99 though.

      --
      hello dear sirs my name is jamesh i are india (bihar) can u guide me install red had linux 9?
  17. Where does the heat go? by Blymie · · Score: 1, Interesting

    I don't see any fans or other way the heat is dissipated into the air, from the oil.

    I guess he uses it for an hour, then the oil becomes the same temp as the cpu.. and then shuts it off? Since he says that the forum isn't in english, I didn't bother to check.

    However, nothing is visible in his pics...

    I'd say that the only reason this hasn't gone *boom*, is because it looks like a PII or Celeron (Slot 1 card).. and he hasn't really pushed it for long periods of time.

    1. Re:Where does the heat go? by Space+Coyote · · Score: 5, Informative
      I don't see any fans or other way the heat is dissipated into the air, from the oil.

      Except that the fans are still on, which supposedly moves the oil around. And when oil at the surface becomes warmer than room temperature, the heat is disappated into the air, with much greater surface area than is touching the heat source.

      --
      ___
      Cogito cogito, ergo cogito sum.
    2. Re:Where does the heat go? by enrico_suave · · Score: 1

      "I guess he uses it for an hour, then the oil becomes the same temp as the cpu.. and then shuts it off? Since he says that the forum isn't in english, I didn't bother to check."

      Apparently it's been running for a year or so to date... (supposedly)

      e.

      --
      Build Your Own PVR/HTPC news, reviews, &
    3. Re:Where does the heat go? by Profane+MuthaFucka · · Score: 1

      Are you serious? As the oil heats, the heat is transferred to the air around the case, and to the table under the case. The surface area is quite large, and can transfer much more heat than a CPU can supply.

      --
      Fascism trolls keeping me up every night. When I starts a preachin', he HITS ME WITH HIS REICH!
    4. Re:Where does the heat go? by dustinbarbour · · Score: 1

      As the oil moves around, it contacts the air outside the tank. The air takes the heat away. Think of the oil as one giant heatsink.

    5. Re:Where does the heat go? by csimicah · · Score: 4, Interesting

      Even with no heat loss to the air, I've got 10 minutes per degree C raise, at 20 gallons of mineral oil and 200 watts of power.

      It's probably moot because that's a ton of cooling surface area.

    6. Re:Where does the heat go? by phsdv · · Score: 1

      He is running the system for over a year without an oil change. Try that with your car!

    7. Re:Where does the heat go? by endoboy · · Score: 5, Informative

      don't give up your day job for a career in heat transfer...

      A large surface area (e.g., the sides and top of the acquarium) makes an efficient device for convective heat transfer to the room air. The mineral oil would certainly get warmer than the room air, but it would stay well below the temp of the PC components.

      Given sufficient motivation, the steady state value can be calculated within a fraction of a degree. Lacking that motivation, however, a reasonable approximation is that the acquarium would be less than 10C above room temp.

    8. Re:Where does the heat go? by Blymie · · Score: 2, Insightful

      Sorry guys, I don't buy it. I've heated fish tanks larger than that, with a small heater (you know the little fish tank kind).

      The ram, the CPU, the power supply.. they put out a LOT of heat, especially when taxed. As well, this oil is more dense than water. It will take longer to heat up, but it will also _retain_ heat longer as well. Water gets a lot of its cooling because of evaporation, which won't be happening to this oil..

      Again, I don't buy it. I've seen others use external cooling methods for the oil. I'm quite sure he's never taxed this system.. or perhaps night time "cool down" is enough to carry him through the day...

      I still don't buy that though. He probably uses it for a server or some such, after all... it's not a game machine, with a PII class CPU..

    9. Re:Where does the heat go? by Anonymous Coward · · Score: 0

      On his page he writes, that he left the fans where they were so the oil circulates.

      The comp really is an Celeron 550 with 192MB RAM and a GeForce FX 5200 (for DVI).

      And no, it's not mineral oil but "plant oil" (the eatable variant - ok, before immersing the comp...)

    10. Re:Where does the heat go? by Anonymous Coward · · Score: 0
      Precisely. And besides, re:

      I'd say that the only reason this hasn't gone *boom*, is because it looks like a PII or Celeron (Slot 1 card)...

      That's doubtful. The ingition point of biodeisel is about 300 deg. F. Straight vegetable oil is even higher, as I recall. Might make the stuff useful for, uh, "entertaining guests," however.

    11. Re:Where does the heat go? by Anonymous Coward · · Score: 0

      BMW's get 15k miles between oil changes.

    12. Re:Where does the heat go? by TClevenger · · Score: 1

      I'd like to see a CPU or power supply fan that can keep moving in mineral or vegetable oil, much less circulate the stuff around. At the bare minimum, he'd have to flick them to even get them moving.

    13. Re:Where does the heat go? by KrancHammer · · Score: 1

      Your argument does not support you. As a matter of fact, it supports what everyone else is saying. How hot does the heating element in your aquarium have to get to keep a mean temperature of 77 Fahrenheit for the water?

      --
      Trolls: The high-tech version of those morons that scrawl obscenities in public bathrooms.
    14. Re:Where does the heat go? by orderb13 · · Score: 1

      What kind of game machine has a PII CPU??

    15. Re:Where does the heat go? by phsdv · · Score: 1

      my Citroen (diesel) gets 20K between oil changes, but that is still within a year...

    16. Re:Where does the heat go? by dougmc · · Score: 5, Informative
      I've heated fish tanks larger than that, with a small heater (you know the little fish tank kind).
      So we all have.

      However, This site suggests a 75 watt heater to keep a 20 gallon tank 18 degrees F above room temperature, or a 150 watt heater for 36 degrees F.

      The computer probably puts out less than 150 watts total. Even assuming an 80 degree F room, that would put the computer at 116 degrees F, which wouldn't upset the computer at all. Granted, the heater you put in a fish tank has a thermostat, and so it's not on all the time, but your computer will not have any problems at 116 degrees F inside, and could go a good deal higher safely.

      But I do agree with the other guy to respond to your post -- I don't see the fans even turning, let alone turning enough to move the oil around. Perhaps if they were cut down some ...

      Of course, I have no idea how well heat flows through oil, or how well it's transferred from oil to the air. But I imagine that the heat generated is low enough for it to not be a problem.

    17. Re:Where does the heat go? by ArbitraryConstant · · Score: 1

      I'd say the surface area of the various heatsinks would be greater than the surface area of the oil exposed to air in that tank.

      --
      I rarely criticize things I don't care about.
    18. Re:Where does the heat go? by Anonymous Coward · · Score: 0

      Maybe he should add a couple of fish tank bubblers...

    19. Re:Where does the heat go? by lubricated · · Score: 1

      > As well, this oil is more dense than water. It will take longer to heat up, but it will also _retain_ heat longer as well.

      You can't be more wrong on this one. He is using vegetable oil. It's lighter than water. Vegetable oil will heat up to 350 F quicker than it takes the same volume of water to boil.

      --
      It has been statistically shown that helmets increase the risk of head injury.
    20. Re:Where does the heat go? by Anonymous Coward · · Score: 0
      You would? How much surface area do you think a CPU heatsink has?

      A massive Thermalright heat sink has 40 fins and each fin is a few centimeters high and wide. If each fin was rectangular, 9.5cm x 4.5cm, the total surface area would be about a third of a square meter, counting both sides of each fin. It's actually less, because the fins have cutouts. A small aquarium, on the other hand, say 30cmx40cmx50cm, would have a surface area of three-quarters of a square meter, not including the bottom.

      You're not even close. Take a normal heatsink, and you're off by a factor of 10.

    21. Re:Where does the heat go? by Anonymous Coward · · Score: 0

      maybe you should give up yours...

      The large surface area is only valuable if the temperature is well conducted to the edges where the convective transfer can occur. This will likely occur if (i) the material has high conductivity or (ii) the material has low enough viscosity to allow for bouyant convection. While mineral oil will flow enough, I'd still be worried that the heat would build up near the processor. If he were really smart he'd throw a series of tubes into the oil. my 2 cents.

    22. Re:Where does the heat go? by LoveTheIRS · · Score: 1

      Here here, my processor right now is running at 125F.

    23. Re:Where does the heat go? by ArbitraryConstant · · Score: 1

      The sides and bottom of the aquarium would have very poor thermal conductivity. There is a lot of surface area as you say, but it takes a lot of glass to make up for one sq cm of aluminium. I was thinking of the top of the aquarium, and assuming a fan was circulating air through the gap at the top.

      After reading the other posts I think the temperature would probably reach equilibrium and everything but the CPU and GPU would be opperating warmer than usual, but still at safe temperatures. But those parts are what limit the performance of the system if you're overclocking, so that might not be too bad.

      --
      I rarely criticize things I don't care about.
    24. Re:Where does the heat go? by pla · · Score: 1

      Except that the fans are still on, which supposedly moves the oil around.

      Actually, that part would worry me the most about this design, leaving the fans on.

      The ordinary sort of brushless DC fans used for cooling PCs respond very poorly to stalling... As in, they usually cook themselves, and unless you get lucky, they often take other parts out with them (such as the power supply, or whatever part they should otherwise have kept cool).

      Now, in air, they can spin away happily until their bearings wear out, with no significant resistance (of the physical, not electrical kind) until they get going rather fast (at least a few hundred RPMs, even for 120mm fans).

      In oil, though, even a very, very thin one, the fan has to fight a lot more physical resistance to spinning. Enough that I would worry about them behaving comparable to a stall (ie, cooking themselves rather than moving).

      Can any EEs or MEs comment on this in a more informed manner than my mere speculation?

    25. Re:Where does the heat go? by 0x000000 · · Score: 1

      Take a picture of a turning fan, and let's see if you can see that it is turning.

      Thing is, if you do this yourself, you will notice that it looks as if the fan is not moving at all. So it might be moving, without us knowing it, or he just turned them off.

      --
      cat /dev/null > .signature
    26. Re:Where does the heat go? by dougmc · · Score: 1
      Take a picture of a turning fan, and let's see if you can see that it is turning.
      Heh. Obviously I didn't make myself very clear :)

      Let me restate myself ...

      I would not expect a fan designed to pull 3000 RPM in air to spin at all in oil. And if it did spin, it would spin so slowly that it couldn't move the oil to any signifigant degree.

      That's what I meant by `can't see' ...

  18. In other news.... by Anonymous Coward · · Score: 0

    Arson investigators in Germany are looking into reports that....

  19. Google Cache.... by cansecofan22 · · Score: 0
    --
    "If ignorance is bliss, why aren't there more happy people in the world?"
    1. Re:Google Cache.... by Anonymous Coward · · Score: 0

      what's the point? google only mirrors the text and there is almost none on that page.

  20. If he gets /.d will his motherboard catch on fire? by WillAffleckUW · · Score: 1

    After all, it's immersed in mineral oil, which makes one wonder ... at what temp will it catch on fire? A good slashdot effect and whoops, there go the sprinklers ...

    And what if his cat gets thirsty? Will it suffer any ill effects?

    --
    -- Tigger warning: This post may contain tiggers! --
  21. These PC cooling tall tales are getting absurd by wsanders · · Score: 2, Funny

    What's next -

    - PC kept lifted to tropopause to take advantage of constant -55C temperatures

    - Armies of hamsters enslaved to turn multi-stage centrifugal fans

    - PC strapped onto hood of 67 Camaro driven down freeway to maximize airflow

    --
    Give a man a fish and you have fed him for today. Teach a man to fish, and he'll say "WHERE'S MY FISH, YOU IDIOT?"
    1. Re:These PC cooling tall tales are getting absurd by Anonymous Coward · · Score: 0

      - PC strapped onto hood of 67 Camaro driven down freeway to maximize airflow

      I got dibs on this one, but it will have to be a 78 camaro.

    2. Re:These PC cooling tall tales are getting absurd by bcattwoo · · Score: 1
      - PC strapped onto hood of 67 Camaro driven down freeway to maximize airflow

      I did that and got 2 more FPS playing counterstrike - WOOT!

  22. Karma Whores - Dupe by Anonymous Coward · · Score: 1, Informative

    Attention all karma whores: please visit this previous story to obtain highly rated comments to be reposted here. That is all.

    1. Re:Karma Whores - Dupe by Gunnery+Sgt.+Hartman · · Score: 1

      Not a dupe, just similar. Dumbass.

      --
      [ ]
  23. Deja Vu by hypnotik · · Score: 0, Redundant

    I swear I've seen this before.

    Maybe here?

    --
    (I was only an egg, but then I cracked)
    1. Re:Deja Vu by hypnotik · · Score: 1

      How amusing. Moderated redundant on a duplicate story. Surely that counts for bonus points?

      --
      (I was only an egg, but then I cracked)
  24. it's not mineral oil by enrico_suave · · Score: 1

    it's regular old cooking oil!

    --
    Build Your Own PVR/HTPC news, reviews, &
    1. Re:it's not mineral oil by poot_rootbeer · · Score: 1

      it's regular old cooking oil!

      So it has an even lower smokepoint and flashpoint than mineral oil would?

      That's hot.

  25. Glycerin by IPFreely · · Score: 3, Interesting

    I saw a few years ago (probably here on /.) where someone put a MB into a tank filled with glycerin, then put an air conditioner cooler grid into the tank with it. A pump curculated the glycerin over the cooling grid and around the MB. I thought that was pretty extreme. I guess the main point is that you don't want something corrosive or conductive, and you do want something with a sufficiently high specific heat to take the heat away without cooking the board.

    --
    There is nothing so silly as other peoples traditions, and nothing so sacred as our own.
    1. Re:Glycerin by Anonymous Coward · · Score: 1, Interesting

      I think the problem with glycerine would be caking over time. I've heard stories of amps cooled by glycerine having their cooling capacity reduced over time... Granted, that's probably over dozens of years.

      Better have your system totally sealed to the air too. It's like brake fluid in that it loves to absorb water.

    2. Re:Glycerin by Anonymous Coward · · Score: 0

      What kind of pump circulates glycerin? It is like molasses.

    3. Re:Glycerin by Anonymous Coward · · Score: 0

      Hmmm, you want nitrate with that?

  26. Whatever floats your.... by the_rajah · · Score: 5, Interesting

    I'm an elevator Engineer. This reminds me of a very old residential elevator controller I saw recently that was installed in 1917 and still had all the original equipment in good working order. The controller was in a cast iron tub with all the relays mounted to the lid and suspended in transformer oil. There was a hoist in the ceiling to enable lifting the lid for access to the relays. It would cost a fortune to build something like that today, but it certainly was durable.

    --


    "Do the Right Thing. It will gratify some people and astound the rest." - Mark Twain
    1. Re:Whatever floats your.... by Anonymous Coward · · Score: 1, Funny

      Golly, I hope you didn't have to service that. Transformer oil from 1917? Must have been full of PCB's. I hope your future children will all have the normal number of heads.

    2. Re:Whatever floats your.... by Zordak · · Score: 3, Interesting

      At my former job, we had a subcontractor designing an energy storage system. It had to deliver a huge amount of current, so they had this flywheel that would have to charge for a while and then it could do its job. Along the way, I had to approve their coolant with some fancy ultra-high-tech-sounding name. This included the worst-case scenario of the flywheel coming apart and the coolant getting all over expensive and critical equipment as well as acting as a soil contaminant. I got the data sheet and the stuff was basically corn syrup (of a non-sticky type). Turns out it works great.

      --

      Today's Sesame Street was brought to you by the number e.
    3. Re:Whatever floats your.... by Hadlock · · Score: 1

      the stuff was basically corn syrup (of a non-sticky type)

      Glysterine? a.k.a. "lube". Not sure what you cut it with; distilled water I suppose.

      --
      moox. for a new generation.
    4. Re:Whatever floats your.... by swb · · Score: 1

      The Wikipedia page on PCBs is pretty vague on dates, but they indicate that Monsanto didn't start marketing PCBs until 1930. It might be that the oil the parent poster's control electronics was immersed in some _other_ nasty industrial checmical, but it seems kind of doubtful that it would contain PCBs.

    5. Re:Whatever floats your.... by RaeF · · Score: 1

      PCBs are not known to cause birth defects.

    6. Re:Whatever floats your.... by balthan · · Score: 1

      Must have been full of PCB's

      Those printed circuit boards can be pretty scary.

  27. Increased Throughput by Anonymous Coward · · Score: 0

    I find mineral oil greatly increases my throughput.

  28. Wow... by lilmouse · · Score: 1

    I wish I'd thought of that! Tired of the stupid computer that makes so much damn noise? Dump it in the fish tank full of mineral oil! (we won't go into why the fish tank was full of mineral oil). Well, hell, we've been drinking... I wonder if it still works... Whoa, it does work! Neat - take some pictures!

    I must not drink enough when I'm near a fishtank of mineral oil...

    --LWM

  29. Thinking Inside the Box by Anonymous Coward · · Score: 0

    This is the type of innovation CEO's like myself look for in an employee. Best, James http://www.up-set.com/marciano.htm

  30. A Slashdot Favorite by LithiumX · · Score: 1

    At least I'm assuming it is. How many times has this subject come up?

    Maybe we should hold competitions to see who can make the best mineral oil cooled machine?

    I'm tempted to make a dry-ice cooled block (dehumidified of course and allowing for temperature gradients...)

    --
    Do not confuse "Freedom of Choice" with "Free Will".
    1. Re:A Slashdot Favorite by MoonBuggy · · Score: 1

      I'm tempted to make a dry-ice cooled block

      Too late

  31. Comment removed by account_deleted · · Score: 2, Funny

    Comment removed based on user account deletion

  32. To quote Fark by PIPBoy3000 · · Score: 2, Interesting

    This thread is useless without pics!

    There's not even a Google cache of the site. Oopsie.

    For the curious, here's someone else who had a similar idea.

  33. there's showing some brains by DangerTenor · · Score: 0, Redundant

    Just wanted to congratulate the poster on putting a link to a coral cache instead of hammering some poor undercapable web server into the ground. Kudos to you poster!

    --
    Check out our infosecurity industry blog: http://securitymusings.com/
  34. obligatory - /.ed by argStyopa · · Score: 1

    Perhaps he should have used this on his webserver BEFORE posting to /.?

    --
    -Styopa
  35. Accuracy is neat... by Anonymous Coward · · Score: 0

    According to the guy who did it, he used vegetable oil, not mineral oil.

  36. its interesting by Nf1nk · · Score: 1

    I don't see anything that he has done to cool the oil it would seem that he has decreased his surface area for air cooling, It just seems to work off the thermal mass of the oil.
    This would work great until the oil reached a temperature similar to the max temp for the CPU.
    Now if he added a little fountain or a bubbler, or something, that would increase the surface area and thus increase the cooling.
    Now if he added little neon lights, some racing stripes, and some anime stickers, we could get some of the less infromed case modders to make some great messes in their cars

    --
    I used to have a cool sig, back when I cared
    1. Re:its interesting by WillAffleckUW · · Score: 1

      I don't see anything that he has done to cool the oil it would seem that he has decreased his surface area for air cooling, It just seems to work off the thermal mass of the oil.

      Well, he did say that the fans still run, which causes the oil to circulate. Oil being denser than air, should allow it to contain more heat (like the oceans contain more heat than the atmosphere does), which will be circulated around the entire volume and then dissipate to the air and any surface it's mounted on.

      Wouldn't want to get slashdotted on a Texas midsummer midday heat wave though, it might be very risky .... although I suppose you could drape it in wet shirts and towels like we used to when I was a kid to cope with the heat.

      --
      -- Tigger warning: This post may contain tiggers! --
  37. Other advantages by nizo · · Score: 1

    -> Softens hands every time you add/move components
    -> Useful as a laxative (though this guy probably won't need this when he sees the bill from his provider)
    -> Lubricant (what nerd doesn't need that)
    -> Good for soothing baby's chapped bottom

  38. A few notes... by AuSerpent · · Score: 5, Informative

    The guy uses vegetable oil not mineral oil according to his site.

    I did this for a year or so using mineral oil, a plastic storage tub and a small dorm-sized fridge. I had a small electric pump that pumped mineral oil into tubing which was coiled inside the fridge (drilled and in and out hole on the side) and then back into the resevoir. I was a little worried about condensation but it ran fine for over a year before I got tired of the clutter and mess of it. I could have done it better but I didn't want to spend any money on it and just use what I had laying around.

    It was mostly for fun with a few interesting things I learned from it:

    * It allowed me to overclock about 30% more than I could previously squeeze out.
    * The mineral oil did not harm the hardware at all that I can tell from a year of being submerged(it just was a pain to clean).
    * If you have your resevoir higher than your mouse then your mouse will be full of oil in a few weeks (same goes for any component connected by wire I imagine).
    * The only component I found that could not be submerged was a hard drive.
    * The outside coating on the wires will harden and break away after being submerged long enough(but they will still work).
    * There was no connection issues with PCI cards or any peripheral device that was plugged in even if they were coated in mineral oil(even jumpers could be changed while it was submerged).
    * If a drop of some other liquid (that is lighter than the oil) accidently falls into the resevoir it will quickly be coated by the mineral oil and slowly fall to the bottom and can be sucked out (phew!)

    Probably more but those were the most interesting things I remember of it.

    1. Re:A few notes... by ksheff · · Score: 1

      did you have any wireless devices? If so, how well did they work?

      --
      the good ground has been paved over by suicidal maniacs
    2. Re:A few notes... by sremick · · Score: 2, Insightful

      The outside coating on the wires will harden and break away after being submerged long enough

      Well I'd say that just about nixes it right there. The oil might not conduct, but the insulation in those wire bundles is to keep the wires from touching each other, not just other things. Once the insulation crumbles away and the wires start to short against each other, you're going to have problems. Especially in the power supply.

    3. Re:A few notes... by Anonymous Coward · · Score: 2, Funny

      The only component I found that could not be submerged was a hard drive
      It sounds like there's a story behind that statement...

    4. Re:A few notes... by AviLazar · · Score: 1

      If you have your resevoir higher than your mouse then your mouse will be full of oil in a few weeks (same goes for any component connected by wire I imagine).

      Get the Logitech MX-1000. Put the base on top of the computer, and never worry about an oily mouse again :)

      --

      I mod down so you can mod up. Your welcome.
    5. Re:A few notes... by daemon1010011010 · · Score: 3, Interesting

      He doesn't mean the insulation. Mineral oil won't eat through that (usually). He means the wrapping of the cables. Inside that, the conductors are indevidually insulated with an oil-resistant material (pvc, often). Transformer coils are insulated with a different kind of oil resistant plastic, and are often submerged in oil.

    6. Re:A few notes... by erik_flannestad · · Score: 1

      Over time I would worry about the plastic in capacitors and resistors, too.

      I'm not a chemist; but, aren't most plastics semi-permeable to oil?

    7. Re:A few notes... by myowntrueself · · Score: 2, Funny

      "The guy uses vegetable oil not mineral oil according to his site."

      Should have used extra virgin olive oil. Added lots of anchovies, some garlic and half a pound of butter.

      mmmmmmm bana cauda....

      Mr. Garibaldi would be proud.

      --
      In the free world the media isn't government run; the government is media run.
    8. Re:A few notes... by tsotha · · Score: 2, Funny
      If a drop of some other liquid (that is lighter than the oil) accidently falls into the resevoir it will quickly be coated by the mineral oil and slowly fall to the bottom and can be sucked out (phew!)

      I'm tryin' to figure out why a drop of anything ligher than mineral oil would sink to the bottom instead of floating on the top.

    9. Re:A few notes... by StikyPad · · Score: 1

      It probably had more to do with having liquid cooling than the fact that you ran it into a refrigerator. Refrigerators are effective because they're well insulated; the cooling mechanism itself is energy efficient because it isn't very powerful at all (especially in mini-friges) and probably had little to no effect on your setup overall. The coiled tubing itself and the surface area of the resovoir probably provided the majority of your cooling.

      Not to say that it wouldn't have helped at all, but what's 1/2 degree of cooling when it meant sacrificing a convenient storage space for important things like beer?

    10. Re:A few notes... by Anonymous Coward · · Score: 0

      And Dr. Franklin would be apalled!

    11. Re:A few notes... by Anonymous Coward · · Score: 0

      I like how he calls it "lighter" as well... A better word would be "less dense", and the correct word is "more dense".

      Jordan

    12. Re:A few notes... by ignorant_coward · · Score: 5, Funny

      Should have used extra virgin olive oil.

      Considering the likely type of person who enjoys overclocking systems in tubs of oil, using "extra virgin" oil would just be redundant.

    13. Re:A few notes... by myowntrueself · · Score: 1

      I think the exact quote would be;

      "I can feel the insulation on my wiring hardening just being in the same room as that stuff"

      --
      In the free world the media isn't government run; the government is media run.
    14. Re:A few notes... by Kloog · · Score: 1

      Actually there are many fine stories regarding the Mineral Oil Experiment (MOE), but Serp would probably hunt me down and beat me with a pool cue if I shared them.

    15. Re:A few notes... by Anonymous Coward · · Score: 0

      Considering the likely type of person who enjoys overclocking systems in tubs of oil, using "extra virgin" oil would just be redundant.

      Or highly appropriate.

    16. Re:A few notes... by ignorant_coward · · Score: 1


      Touché.

    17. Re:A few notes... by Anonymous Coward · · Score: 0
      Well, now that you point it out, lighter is correct.

      Since it's a small drop, it's lighter despite being "more dense".

    18. Re:A few notes... by onykage · · Score: 1

      great tips! I have been wanting to dabble in the area of oil cooling, and I think i have a few simple solutions to a few of the problems noted. mebbe now would be a good time to pick it up and try it out.

  39. Image mirror by delta407 · · Score: 2, Interesting

    Of course, none of that really matters, since the images are on a different server that neither Coral nor the original site are able to access.

    I've got a mirror of the images building here. The server is dying quickly, but I should be able to complete the collection.

  40. The Universal Solvent by frovingslosh · · Score: 2, Insightful
    Can we do the same thing with water instead?

    You might want to do a Google search on this term and see what is considered the "universal solvent".

    --
    I'm an American. I love this country and the freedoms that we used to have.
    1. Re:The Universal Solvent by Anonymous Coward · · Score: 0

      Solvent nothing, how about conductive. Pure water doesn't stay pure when you put stuff like metals into it. And like you said, it does a pretty quick job at it.

  41. Vegetable Oil... by Anonymous Coward · · Score: 0

    Upon RTFA, I see that it uses vegetable oil, not mineral oil...

  42. This is a fire hazard.... by Fallen+Kell · · Score: 1

    Flash point: 135C (275F) CC If any one component or combination hits this it will light on fire. P4's can easily hit 100C even without overclocking in some systems (limited cooling). If there is not enought oil to air heat exchange occurring, it could catch on fire if he keeps it on too long...

    --
    We were all warned a long time ago that MS products sucked, remember the Magic 8 Ball said, "Outlook not so good"
    1. Re:This is a fire hazard.... by Anonymous Coward · · Score: 0

      You dumbass ... it's under the oil. There's no oxygen under the oil. You stupid cunt. What are you doing on slashdot?

    2. Re:This is a fire hazard.... by endoboy · · Score: 1

      you need oxygen to start a fire.... as long as the hot component isn't exposed to the oil AND the air, he's fine

      (which isn't to say that it's a good idea...)

    3. Re:This is a fire hazard.... by Anonymous Coward · · Score: 0

      I think it would only ignite if the surface temp of the oil reaches the flash point. That is very unlikely to happen. The oil around the cpu (even at very high temps) is not going to ignite if it is submerged to a sufficient depth in the oil. An aquarium full should do the trick!

    4. Re:This is a fire hazard.... by forkazoo · · Score: 1

      So, have some water at the bottom of the tank, away from the components. If the water starts boiling, you have a problem. Have a plate at the oil-water interface so that steam is routed to the edges of the case, not near the fiddly bits. Voila, you have a bubbling, seething temperature alert indicator which likely won't fail.

      Given that most people who do water cooling don't have a problem with boiling, I think this should be a non-issue in all but the most extreme circumstances. (But then, why are you using an 8 CPU mineral oil cooled system with no fans in the middle of the desert, at the center of a solar collector in mid day...?!)

    5. Re:This is a fire hazard.... by Psiren · · Score: 1

      But then, why are you using an 8 CPU mineral oil cooled system with no fans in the middle of the desert, at the center of a solar collector in mid day...?!

      Well, it seemed like a good idea at the time... ;)

    6. Re:This is a fire hazard.... by Anonymous Coward · · Score: 0

      1) He has the heatsink. That heatsink effectively has a hundred times more surface area than the CPU itself, if not more. 50 Watts .5CM^2 will make that area hot fast. 50 Watts on 5CM^2 will be much more tame.

      2) No oxygen under the oil, no combustion.

      3) NO P4 ever got to 100C. That's 210 degrees for you english peoples. Boiling water temperature. Your motherboard's coating would melt from the radiation alone.. FWIW, I've never heard of non-over clocked consumer grade CPU reaching over 65C under full load... Including the latest greatest 3.2Ghz+ P4s.

      4) With all of the fans stirring up the oil, it will never reach 135C. Ever. Oil has heat removing ability about 100x that of air. It probably won't even reach 45C with all of that surface area.

      5) A transmission oil cooler would go a LOOOONG way in making a setup like this tolerant to loads more heat, even being completely sealed to air (who would want all of that vapor?) I don't want my home to smell like a machine shop.

    7. Re:This is a fire hazard.... by WalksOnDirt · · Score: 1

      The oil can't flash unless it's in contact with the air, where the temperature will be much cooler. I can't imagine there would be enough heat to bring the whole aquarium up to near frying temperatures.

      A Google search shows flash points from 135 C to 220 C, so it may vary depending on the type of mineral oil.

      I think a bigger danger would be from external heat sources, like static sparks. If the aquarium is sealed against oxygen that may not be much of a hazard either.

      The mineral oil could also make a fire caused by something else much worse. Fire departments would probably rather not see this type of cooling become popular.

      --
      a,e,i,o,u and sometimes w and y (at be if of up cwm by)
  43. mirrordot link by robgue · · Score: 1
    1. Re:mirrordot link by winkydink · · Score: 1

      Yeah, the Coral Cache was getting slashdotted.

      --

      "I'd rather be a lightning rod than a seismometer." -Ken Kesey

    2. Re:mirrordot link by petermgreen · · Score: 1

      he wasn't using relative paths for the images so coral wasn't helping much.

      --
      note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
  44. It's been done, it works by orasio · · Score: 4, Insightful

    Some guys in Spain (http://www.sorgonet.com/torderawireless/nodo1mejo rado.html) already did it in 2003, and we at /. talked about it. Apparently it keeps on working.

    http://slashdot.org/articles/03/03/16/2023221.shtm l?tid=193&tid=137

    As everybody says here: nothing [new] to see here, move along.

    1. Re:It's been done, it works by Anonymous Coward · · Score: 1, Informative

      The electronics on some deep sea submarines are encased in mineral oil. Though immersing electronics in oil might sound strange, it is not an uncommon practice. Here are some research papers on the topic:
      http://tdei.sju.edu/tdei/index/eiidx.html

  45. Immersing Speakers sounds like a bad idea by billstewart · · Score: 1

    So he immersed everything but the hard disks. Makes sense for many of the parts, though I'd be a bit concerned about oil interfering with cable connectors, but immersing the speakers just sounds likely to fail :-)

    --

    Bill Stewart
    New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
    1. Re:Immersing Speakers sounds like a bad idea by Vintermann · · Score: 1

      Immersing the speakers is probably interesting if you immerse your head as well.

      --
      xkcd is not in the sudoers file. This incident will be reported.
  46. This is cooler - how? by k98sven · · Score: 1

    So oil conducts heat much better than air. So the heat is going to be conducted away.. where? Hmm.. the aquarium walls. Then where does it go? Into the surrounding air. At a rate determined by the amount of surface area (and the airflow).

    Thing is, I wager the aquarium walls have a lower total area against the surrounding air than his computer would've had otherwise. Which would mean that he's actually getting rid of less heat, and that in the long run (e.g. when the abient temperature, oil temp and computer temp have reached equillibrium) his computer is going to be a lot warmer than it was.

    Or?

    (And I can imagine that oil doing quite nasty things to the polymers in the machine. But that's a different story)

    1. Re:This is cooler - how? by Enigma_Man · · Score: 1

      The thing is, he might be getting rid of less heat total, but he's evening out the average heat of the board, which is a good thing. The parts of the board in an air-cooled rig that would be really hot are down at the same level as the rest of the oil, no hot spots, which is the benefit.

      -Jesse

      --
      Nothing says "unprofessional job" like wrinkles in your duct tape.
    2. Re:This is cooler - how? by Anonymous Coward · · Score: 0

      Well, that would be true if the entire surface of the computer was at one single temperature, but really what you've got is the CPU and maybe the GPU giving off the vast majority of heat, and the oil's specific heat will do a much better job of distributing that heat over the entire surface area of the aquarium.

    3. Re:This is cooler - how? by poot_rootbeer · · Score: 1

      Thing is, I wager the aquarium walls have a lower total area against the surrounding air than his computer would've had otherwise.

      No, this isn't possible, at least not with solid objects and Euclidean geometry.

      A large object which is capable of containing a smaller object must have a larger surface area than the smaller object.

    4. Re:This is cooler - how? by k98sven · · Score: 1

      The thing is, he might be getting rid of less heat total, but he's evening out the average heat of the board, which is a good thing. The parts of the board in an air-cooled rig that would be really hot are down at the same level as the rest of the oil, no hot spots, which is the benefit.

      Well, you can certainly have hot-spots in the oil too.

      The fans (if they really are working..) aren't built for pushing a viscous fluid like oil. The distance between the fins of the cooling block aren't dimensioned for oil either. The flow around the CPU cooler fins may very well be limited to diffusion and convection. (natural draught)

      That might be enough. But it might not.

      (I've studied fluid- and thermodynamics once upon a time and done these kinds of calculations.. but not enough to be able to say anything offhand.)

    5. Re:This is cooler - how? by jjohnson · · Score: 2, Informative

      While the aquarium may have less total area, the conduction of heat to the aquarium walls through oil is much, much more efficient than through air to the walls of an aluminum case, resulting in far better heat dissipation overall.

      --
      Anyone who loves or hates any language, platform, or manufacturer, doesn't know what they're talking about.
    6. Re:This is cooler - how? by Anonymous Coward · · Score: 0

      Simple answer: Because simple heat conduction is only part of the story.

      There's a little thing that those of us who know a thing or two about material properties like to call heat capacity that is also coming into play here, it's how much heat a given volume of substance can absorb before its temperature is raised by one degree Centigrade.

      Air's is super small, oil's is much larger, water's even larger still (depending on the oil) but it conducts unless you go to extreme lengths to get rid of all the dissolved salt from everything.

      What does this matter? Take a walk outside on a brisk day, you are chilled but it is tolerable. Now lie down on a block of concrete in the shade for a little bit on that same brisk day. That's heat capacity right there, the air and the concrete start at the same temperature, but the air warms up with a lot less of your body heat.

      That same difference means that a PC's worth of air heats up to CPU temperature in a matter of minutes, whereas this beast (with much larger heat capacity and volume) could take hours of computing without a noticable temperature increase. Extra cooling for the oil isn't that hard to figure out, either, check out some other comments for possible ideas.

    7. Re:This is cooler - how? by Kwil · · Score: 1

      The aquarium may have less surface area than his computer, but the computer isn't the part that gets hot.. it's really just the CPU chip (and perhaps some graphics processing chips) that get hot.

      Care to wager the surface area of those is higher than that of the aquarium?

      --

      That Jesus Christ guy is getting some terrible lag... it took him 3 days to respawn! -NJ CoolBreeze

    8. Re:This is cooler - how? by k98sven · · Score: 1

      While the aquarium may have less total area, the conduction of heat to the aquarium walls through oil is much, much more efficient than through air to the walls of an aluminum case, resulting in far better heat dissipation overall.

      Yes, but the heat dissipitation in the case of air is promoted by having fans pushing outside air through the thing - the heat dissipitated by the case isn't significant.
      (typically the outer part of a computer case isn't noticably warmer than the ambient temp)

      With this setup, the heat can only escape via the aquarium walls, which don't have any air being pushed around to cool them. In addition to a lower total area.

      I don't see why it'd be a given that the setup has far better heat dissipitation.

    9. Re:This is cooler - how? by k98sven · · Score: 1

      That's correct and all. But I took that into account, I was referring to the equillibrium temperature, at which the thing isn't getting either hotter or colder.

      Then differences in heat capacity don't matter.

    10. Re:This is cooler - how? by k98sven · · Score: 1

      The aquarium may have less surface area than his computer, but the computer isn't the part that gets hot.. it's really just the CPU chip (and perhaps some graphics processing chips) that get hot.

      That's because they have fans pushing air at them and out through the case. Air doesn't conduct heat well, and doesn't have time to warm the case significantly. If you turned the fans off, the case would start to heat up. But since the motherboard and things in between the chip and case conduct heat rather poorly, the chip would likely get too hot before the case got very warm.

      In this setup, you have a much more heat-conductive medium, which is not moving around as much, and is not being exchanged with a huge reservoir around it held at ambient temperature. The chips will get too hot unless the oil can conduct heat fast enough to the aquarium walls (the only place it can go).

      If the walls can't dissipitate that heat at an equal or greater rate, the oil will start to heat up, causing the walls to dissipitate more heat (warmer objects emit heat faster than colder ones (Stefan-Boltzmann law)), eventually you'll reach an equillibrium where the walls are emitting the same amount of heat which is produced and the temperature will be stable.

      I don't see why I should automatically believe:
      1) That the oil and walls can transport away heat from the chips fast enough to avoid them reaching an unhealthy temperature

      2) That that transport will be more efficient than just cooling the hot parts by blowing air through them, and letting the rest of the machine remain at more-or-less ambient temperature.

      The average temperature of the machine will almost certainly be higher. Since most of the case and things inside it are almost room-temperature during normal use. The temperature of the oil is not going to be colder than room temperature, and it is in direct contact with all the hottest parts, as well as the case.

    11. Re:This is cooler - how? by pizpot · · Score: 1

      "A large object which is capable of containing a smaller object must have a larger surface area than the smaller object." Umm, that is like saying that the fin side of a heatsink has the same area as the flat side. >:-(

    12. Re:This is cooler - how? by Legion303 · · Score: 1

      "A large object which is capable of containing a smaller object must have a larger surface area than the smaller object."

      The great thing about three dimensions is that you can do things like stuff something with a surface area of n into an object with a surface area less than n. You can verify it yourself with a couple of pieces of paper.

    13. Re:This is cooler - how? by Anonymous Coward · · Score: 0

      Someone in these comments had several points about their own experience with oil cooling... should have grabbed that comment #. take a look!

  47. Coral Cache and images. by PxM · · Score: 1

    Did anyone notice that the images aren't on a coral cache server? They're hosted on the same server as the images for the original site so it will still be slashdotted. OTOH, mirrordot cached the images properly: http://www.mirrordot.org/stories/7bb0bea011df80856 9857f1175b25bee/index.html

  48. Re:Wow way old news by Anonymous Coward · · Score: 0

    Looks cool and pretty, but when you gotta upgrade, you're left in a sticky situation.

    It's a real slippery slope.

  49. An aquarium full of oil? by dfn5 · · Score: 1
    Maybe it was full when he started the project, but those pictures look like it is only half full. I guess screwing the motherboard standoffs into the bottom of the aquarium wasn't such a good idea after all.

    --
    -- Thou hast strayed far from the path of the Avatar.
  50. Balls by COMON$ · · Score: 1
    I noticed his tech was state of the art. Seriously. I want to see something with some heat coming out of it. A friend of mine is doing something similar but overclocking the hell out of it. Maybe with a 2400 Barton OCd we could have a deep frier.

    Brings a whole new meaning to "You want fries with that?"

    --
    CS: It is all sink or swim...oh and did I mention there are sharks in that water?
  51. Wants fries with that? by AviLazar · · Score: 1

    So once the uber clocked processor heats the oil to boiling temp he can make some fries.

    --

    I mod down so you can mod up. Your welcome.
  52. Wasn't it fan noise that bugged him? by mmuskratt · · Score: 1

    I was under the impression that it was the fan noise that made him go nuts...if this is an 80/20 solution to that, I guess it would work out OK.

    --
    man rtfm
  53. I thought it was a bad pun by Anonymous Coward · · Score: 0

    Aquarium - little pottery diver bubbling air - plastic plants and of course coral.

    How appropriate.

  54. What about afterwards? by David+Horn · · Score: 1

    Since oil is electrically inert, how is he going to use any of the expansion slots on the motherboard should be decide to remove it from the oil?

    I would imagine that even a thin film of oil on the electrical contacts will totally (to use the technical term) bugger it.

    --
    PocketGamer.org - For the gamer on the go!
    1. Re:What about afterwards? by 10Brett-T · · Score: 1

      Ever change an exterior light bulb on a car? The connectors are packed with grease to repel corrosive water.

      Telco technicians use grease-filled splices all over the place for the same reason. The grease is displaced just enough by tight contacts.

      --
      10Brett-T
      Oh, bother.
    2. Re:What about afterwards? by David+Horn · · Score: 1

      Yes, but the connectors are tight because they're designed with grease in mind. Don't forget they've also got long prongs to go into the channel, and only two nice thick ones have to connect.

      With PCI, several hundred narrow copper channels (not rods) have to be in perfect contact.

      --
      PocketGamer.org - For the gamer on the go!
    3. Re:What about afterwards? by petermgreen · · Score: 1

      pci is definately sprung and its not exactly tiny pins either.

      even in air any connection has to be tight to be reliable.

      --
      note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
  55. Slashdotted - Catch Fire by billstewart · · Score: 3, Funny

    Flammable liquid coolants - just what a gamer needs. You thought using the flamethrower inside was only a way to die in Doom?

    --

    Bill Stewart
    New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
  56. a bad move.. by berkut7 · · Score: 1

    he even left the fans running to keep the oil moving about. A bad move: his fans will soon burn out because they weren't meant to circulate oil, but air. With fans gone and the oil stagnant some parts of his computer will start to heat up...

    1. Re:a bad move.. by SmurfButcher+Bob · · Score: 1

      ... at which point convection currents will kick in. So hopefully, it's a null issue. Hopefully.

      --

      help me i've cloned myself and can't remember which one I am

    2. Re:a bad move.. by BeaverCleaver · · Score: 1

      Maybe the fans won't burn out as easily because their motor windings are also immersed in oil, thus allowing them to shed more heat.

  57. Wrong again. by AaronStJ · · Score: 1

    Slashdot is wrong again. From the site: "yes! it's really a computer completely in vegetable oil!" He's using vegetable oil, not mineral oil.

    --
    Stupid like a fox!
  58. and then.. by CdBee · · Score: 1

    ..sprinklers hit burning oil and there goes his whole house

    --
    I have been a user for about 10 years. This ends Feb 2014. The site's been ruined. I'm off. Dice, FU
    1. Re:and then.. by WillAffleckUW · · Score: 1

      ..sprinklers hit burning oil and there goes his whole house

      Just wait till he files the claim.

      "I'd like to file an insurance claim for a fire in my house."

      "Fine, what was the cause?"

      "My computer got slashdotted and overheated the oil, which lit on fire, setting off the sprinklers, which spread the mineral oil it was immersed in, which then spread the blaze."

      "Ummmmmmmmmmmmmmm ..... exqueeze me?"

      --
      -- Tigger warning: This post may contain tiggers! --
    2. Re:and then.. by CdBee · · Score: 1

      File a claim for an accident involving hot oil and excessive access and nobody'll ever believe it was a geek-related disaster....

      --
      I have been a user for about 10 years. This ends Feb 2014. The site's been ruined. I'm off. Dice, FU
  59. Who'd a thunk it. by gammygator · · Score: 1

    I never really considered sticking a computer in oil before.

    I have considered sticking a server in my CIO's ass, though.

    --

    No Nyarlathotep, No Chaos
    Know Nyarlathotep, Know Chaos
  60. Forget electrical, what about chemical reactions? by erlenic · · Score: 0

    I can't believe that I had to slog all the way to the bottom before someone mentioned the most obvious caveat in doing this! Mineral oil, alcohol, acetone, what do they have in common? They're potent oxidizers! They'll eat anything organic. Wait until the oil (or whatever) eats through the styrofoam and dumps itself onto the carpet. It could be really fun with the more volitile stuff, let it drip down to where there's a pilot light, then wait for the vapor pressure to build... Of course you could get to find out how long a PC can run after the PC boards delaminate and the plastic packages melt. After it does quit, you could sell it as high-tech art. I see the potential for making real profit on this!

  61. Comment removed by account_deleted · · Score: 1

    Comment removed based on user account deletion

  62. Water-repellant ? by thrill12 · · Score: 1

    Sure, it's water repellant, but doesn't mineral-oil float on top of water, thus ruining the MB you have on the bottom of the acquarium ... ?

    --
    Slashdot: stuff for news, nerds that matter, matter for news, stuff that nerd
    1. Re:Water-repellant ? by Hadlock · · Score: 1

      I suppose it'd be a problem if you poured more than a gallon of water in there. So long as you don't spill your super size coke or take the tank in the shower with you, you should be fine.

      --
      moox. for a new generation.
    2. Re:Water-repellant ? by ramblin+billy · · Score: 1


      Why in the world would I ever want a computer that I couldn't take in the shower?

      Jeez....think people.

      billy - rub-a-dub-dub...3 gigs in the tub

  63. Re:If he gets /.d will his motherboard catch on fi by BaudKarma · · Score: 1

    And what if his cat gets thirsty? Will it suffer any ill effects?

    I wouldn't worry. The mineral oil will kill the cat long before the level drops far enough to have any ill effects on the mobo. Now, if the cat dies and falls into the aquarium, there might be a problem.

    --
    It's the land of the brave, and the home of the free
    Where the less you know, the better off you'll be.
  64. I can hear the upsell now.... by Sloosh13 · · Score: 2, Funny

    Would you like to supersize that order at Fry's?

  65. PC lava lamp by enrico_suave · · Score: 2, Interesting

    he should make that sucker into a lava lamp

    it would show/highlight the oil currents/flow by the fans (that are still turning, BTW)

    whoah

    --
    Build Your Own PVR/HTPC news, reviews, &
    1. Re:PC lava lamp by enrico_suave · · Score: 1

      btw, I know "oozing goo" sounds like a dirty site, larf. It isn't honest! it's about DIY lava lamps!

      --
      Build Your Own PVR/HTPC news, reviews, &
  66. LavaPC Anyone? by Levendis47 · · Score: 1

    So... how about adding some colored wax and putting all the components at the bottom of a tall/hexagonal aquarium and making a PC that IS a LavaLamp?

    Not sure if the heat would get high enough to provide the necessary melting of the wax or fluid current in the oil, but as I recall, it doesn't require too much heat... my circa-1976 official LavaLamp only used a 30-watt appliance bulb.

    see: http://www.oozinggoo.com/ for other such madness

    Now I've gone and admitted that I owned a LavaLamp... in 1977... sigh.

    cheers,
    Levendis47

    --
    --==[ AOL YIM ICQ : Levendis47 : levendis47@yahoo.com ]==--
  67. Adding fish by tetsuji · · Score: 1

    This makes me wonder: since oil and water are immiscible, wouldn't it be possible to put some mounting brackets in the tank for all of the electronics about halfway up the tank, then fill the tank to below that level with water, little plastic castles, and fish, and then with oil to the top?

    Aeration might be a bit of a problem, but one could put a divider in the tank and have the bubbler on one side and the electronics on the other in case the bubbling action caused mixing between the oil and the water. If it was designed properly, it wouldn't even be necessary to have oil on both sides of the divider, just on the side with the electronics, although this would definitely make changing the water a delicate process.

    1. Re:Adding fish by alex_ware · · Score: 1

      1: add fairly liquid (liquid soap)
      2: turn aeriation and fans on to top
      result: nasty damage to pc

      --
      If you have nothing useful to say post as AC.
    2. Re:Adding fish by tetsuji · · Score: 1

      Ummm... and why would one do such a thing?

    3. Re:Adding fish by alex_ware · · Score: 1

      Adding the fairly liquid would let the water and oil mix both killing the fish and destrying the "rig".
      It would be fundamentally stupid to do so, but... ...so is pouring sunflower oil on your pc.

      --
      If you have nothing useful to say post as AC.
  68. Heat Disipation by alucard963 · · Score: 1

    If he put some sort of radiator (heat sink?) on the top, would that help him any? As the warm oil dispates its heat through the radiator, convection would cycle the oil in the tank.

  69. Enough by timmy_otoole · · Score: 2, Funny

    with the freakin' CPU cooling stories already! Every other day it's "some guy has invented a novel way of cooling his CPU using a recycled urinal flusher, some windex and half the periodic table. Download the 60GB MPEG to watch it in action!"

  70. Um by PalmKiller · · Score: 1

    I ran it through babelfish, and it says its vegetable oil, not mineral oil:

    http://www.markusleonhardt.de.nyud.net:8090/oelrec hner.htm

    -----snip----
    yes! it's really A computer completely into vegetable oil!
    ----snip----

    .

  71. Flourinert and F-5 Radars by cbelt3 · · Score: 3, Interesting

    Yah- I remember an experimental F-5 radar that emitted 40Kilo Watts (take that, Pentiummmm!). It was about the cubic of a full tower ATX case. Aluminum case, machined heat sinks on the inside, the outside was mounted to a cold plate that was chilled with turbine bleed air. The R/T was mounted inside the case in a three dimensional kind of array of solid state and passive components. Fluorinert filled the cavity. Screwed the lid on, and it went to work. Heat flowed pretty well (thermal sensors built in to the circuitry at various spots) so straight convection was used (no fan, etc.). Worked great !

    1. Re:Flourinert and F-5 Radars by Guysmiley777 · · Score: 3, Interesting

      Pedantic I know, but it probably wasn't chilled directly with engine bleed air, as it is high pressure and high temperature air. More likely it was cooled with air chilled by a compressor powered by bleed air.

      --
      Coding with assembly is like playing with Legos. Coding an application in assembly is like building a car with Legos.
    2. Re:Flourinert and F-5 Radars by Anonymous Coward · · Score: 1, Informative

      as that high pressure hot air expands adiabatcally (no heat flow), it 'cools'. The added complexity of the compressor is not needed.

    3. Re:Flourinert and F-5 Radars by Anonymous Coward · · Score: 0

      The original F-14 radars pumped something like 50KW and used "cooling oil". Dont' know what it was but it was everywhere. Xmtr and some other huge tube components had it all plumbed right in to the boxes from some other part of the plane.
      The oil was light and didn't smell too strongly.
      That's all I got to say about that.

    4. Re:Flourinert and F-5 Radars by Josiah_Bradley · · Score: 1

      I can't remeber the exact link right now but i remember some guys submerged there computer in flourinert and use dry ice and liquid nitrogen to cool it. got the entire mobo to about -50 and the capacitors exploded. I found the link http://www.octools.com/index.cgi?caller=articles/s ubmersion2/submersion2.html

  72. Fans and other such things by phorm · · Score: 1

    Seems to me that while the fans would be plenty capable of running in air, pushing around something the density of oil would put a lot of extra strain on them and cause burn-out?

    Of course, you could always put a more resiliant fan on the case, and one of the advantages I could see is that they would definately be well lubricated (if if the oil stays clean, they'll not seize from dirt/etc for a long time, more likely to burn out).

    Some things I would do if attempting a similar project:

    a) Fans intended for moving liquid.
    b) Protective covers on the PCI, etc ports so that later cards can be added
    c) Seal/Cover up the other plug holes such as USB etc for later use
    d) Perhaps something snazzy like intake tubes etc with fans on the end to move stuff around. Perhaps different coloured inert fluids (with high boiling points) for a cool effect when the fluids move around).

  73. Black gold, Texas tea... by Anonymous Coward · · Score: 0

    Then where does fish oil from from Mr Smartypants?

  74. Intresting... by Arvster · · Score: 1

    More efficient way is not to submerge the whole computer in oil, but just parts like psu. I know in a latvian forum a guy made a custom psu box and filled it with mineral oil for cooling...combine it with a self-made water cooling and the answer you get is a completely fanless computer. Now, try upgrading or changing a part in a computer that is floating in oil...

  75. hell, that ain't nuthin' by killmenow · · Score: 1

    I'm building a case/cooling mod right now using liquid nitrogen!

  76. Water isn't conductive! by Anonymous Coward · · Score: 5, Informative

    Assuming you meant water, the you're wrong. Just water is quite a good insulator.

    The US Navy was using water cooled computers long ago. Just flooded all the circuit cards with distilled water.

    Note that you have to do this with pure water. If you dissolve much of anything in it, then the SOLUTION begins to conduct.

    Most of the water you come into daily contact with (puddles, rivers, flooded basements, even tap water) has quite a bit dissovled into it, which is why generally electricity and "water" don't mix.

    1. Re:Water isn't conductive! by nametaken · · Score: 1


      That's really interesting, as I had no idea pure water wasn't conductive. So I have a question, could this guy (the oil guy) have bought a few gallons of distilled water instead of oil, or are those generally not pure enough to be non-conductive (is that the right terminology)?

    2. Re:Water isn't conductive! by Muhammar · · Score: 1

      Pure (de-salted) water is *poorly* conductive but it will still conduct, depending on the voltage. I would suggest trying pure ethylene glycol (not antifreeze grade, more pure, without phosphate stabilisers)) - it should be less corrosive to metal parts than water. The stuff is unhealthy and will work only for low voltages. Polyfluorinated hydrocarbons have been mentioned before - the advantage is that they are great insulators and are unlikely to dissolve any plastics, and they are nontoxic The cost >1000$/kg is a problem. I worked also with some low-density silicone oil as heat transfer fluid but the stuff was pretty expensive too (about $100/L).

      --
      I doubt that we will ever figure out - and I suspect that even if we did figure out we couldn't do much about it
    3. Re:Water isn't conductive! by Anonymous Coward · · Score: 1, Interesting

      I don't know how pure the distilled water sold at shops is, but the problem is *keeping* it distilled, just think how many things will disolve in water. You would have to be very, very careful when handling the water (you'd have to clean every surface before letting the distilled water touch it, and are you going to clean it with regular water?). I wouldn't risk it, not with a few thousands in hardware, without a high investment in good gear to do so.

    4. Re:Water isn't conductive! by kendoka · · Score: 1

      Actually even DI water can still conduct electricity because of what is known as the auto-ionizing principle. The oxygen atom is more massive than the two hydrogen atoms and thus the electrons are unevenly shared between them. This means at any given point there is at least some small percentage of water molecules that have a slightly negative charge on the oxygen atom and a slightly positive charge on the hydrogen atoms.

    5. Re:Water isn't conductive! by owlstead · · Score: 1

      Maybe it is not conductive at first, but wouldn't parts of the computer begin to dissolve? Then it would become conductive. Not that it matters much, after your computer corroded away...

    6. Re:Water isn't conductive! by ignorant_coward · · Score: 1


      It still can't conduct much current. I remember a physics demo in high school, where the electrodes to a light bulb were immersed in distilled water. The lightbuld didn't light until the teacher dumped some salt into the beaker.

    7. Re:Water isn't conductive! by Anonymous Coward · · Score: 2, Interesting

      Does anyone take basic high school chemistry anymore? Holy shit. It was required where I went, and we had a little "lab" where we measured the resistance of pure water and some salt water, and then lit a bulb with probes in salt water. Maybe you went to one of those schools where they teach creationism or that inteligent design malarky.

      Back on subject: it dosen't take much to make water mildly conductive. Dust, for example in sufficient amount will do a great job at it. I'd want to thoroughly clean and rinse any electronic parts that I intended to be sunk in distilled water.

    8. Re:Water isn't conductive! by nametaken · · Score: 1


      I apologize for offending you with my ignorance. Yes, I took high school chemisty. I'm sure we even did these same "labs" and I just don't recall. It has been a long time since HS and that's not the sort of thing I'd retain through regular use.

      Oh, and they did not teach creationism. I went to a public high school. Supposedly, it was even one of the best ones. This just goes to show you, a good school can't necessarily make you pay more attention to chemistry than the hot girl next to you.

    9. Re:Water isn't conductive! by Anonymous Coward · · Score: 1, Informative

      Distilled water is definately conductive!

      The only water that is NOT conductive is 100% pure molar water that you get through a chemistry supplier. I bet the Navy's 'distilled' water is of chemical quality, however.

      Your local grocery store's plastic jug of distilled water isn't.

    10. Re:Water isn't conductive! by thorgil · · Score: 1

      Even in PURE water you have ions, the same amount of both H+ and OH- (and as you have H+ you also have H(3)O+) This is known as pH 7 (or pOH 7 for that matter). (where p is -log(conc in molar))
      The ion concentration is (theoretically)
      10^-7 (H+ and H3O+ combined) plus
      10^-7 OH-
      about 10^-6.7 molar

      Several ions... therefore conductive.

      --
      Warning: This sig contains a small bug. ==> *
    11. Re:Water isn't conductive! by Anonymous Coward · · Score: 0

      Well, the conductive/nonconductive thing isn't on/off, it's along a scale of conductivity, or resistivity, whichever way you like to look at it.

      Copper is very very conductive.

      Air is very very resistive.

      Distilled water has many of its minerals and dissolved gases removed (well, distillation essentially removes *all* of these, but they get back in after a while). So distilled water is less conductive than tap water, and more conductive than pure water.

      The idea is to figure out the maximum conductivity you can use for your coolant, by estimating the distance between traces and the amount of current leakage you're willing to accept, and then pick out a coolant less conductive than that.

      The whole "pure water isn't conductive" isn't very helpful, since the only way to get "pure" water is through some sort of filtration/distillation/reverse osmosis/nanofiltration process, and the only way to keep this water "pure" is to keep it from being exposed to anything that will dissolve in pure water, such as air or even most types of glass.

      Distilled water would probably be conductive enough to cause problems. It could also corrode a lot of the metal components, and lead to microbial growth. You could avoid that by using anti-corrosive and anti-microbial additives, but then the water becomes really conductive, and you're worse than you were with tap water.

      -A

    12. Re:Water isn't conductive! by Canar · · Score: 1

      If it was conducting electricity though, wouldn't it likely also be acting as a bit of a hydrolysis apparatus too, and releasing oxygen and hydrogen?

    13. Re:Water isn't conductive! by spauldo · · Score: 1

      Electrolisys doesn't work well with pure water. You'd have to use an extremely strong current, since pure water has such a high resistance.

      That's why when you do electrolysis, you start out with distilled water and dissolve a certain substance into it (I think they suggested baking soda, but it's been forever). You have to be careful what you dissolve in it, or you won't get oxygen and hydrogen - for instance, salt water gives you chlorine and hydrogen in your gas collectors and sodium hydroxide in your water.

      I could be wrong on some of this - it's been forever - but either way, the small charge the water molecule has due to it's unbalanced shape does nothing for conductivity. It does, IIRC, cause ice to crystalize.

      --
      Those who can't do, teach. Those who can't teach either, do tech support.
    14. Re:Water isn't conductive! by kendoka · · Score: 1

      Even a seven watt night-lite bulb still requires seven watts of electricity and therefore a circuit capable of delivering that power. The amount of electricity required to short a circuit on an electronics board is several orders of magnitude less. The AI effect becomes much more of a factor in sensitive situations such as measuring pH levels to 4 or 5 decimal places and say, bathing your computer in DI water.

  77. More One Liners by Anonymous Coward · · Score: 2, Funny

    Nothing says "nerd" like a PC dipped in a vat o' lard.

    So what happens when the motherboard gets fried?

    Installing Mandrake results in a default hostname of PekingDuck.

    Two words: Debian Potato.

    Installing Snort causes the room to smell like pork rinds.

    Cool off your PDA -- grease a palm!!!

    No, the oil doesn't make your 56k modem go faster.

    Friendly reminder to change your oil every 3 months or every 3000 Megs.

  78. yes but.. by Turn-X+Alphonse · · Score: 1

    how much did all that oil cost? That's a huge amount of oil..

    --
    I like muppets.
    1. Re:yes but.. by Hadlock · · Score: 1

      Vegetable oil is about $4 a gallon. Looks like his 10 gallon tank is about half full, minus 1/8th of a gallon displacement for the components; 4.875 gallons*$4= $19.70, or about the cost of a copper heat sink + artic silver paste.

      --
      moox. for a new generation.
  79. Counter going wild by g0sub · · Score: 1

    Hey, he has a counter on his page. Incrementing pretty fast at the moment :-)

  80. CD-ROM and floppy by cyfer2000 · · Score: 1

    I guess this guy also get external ones, I can NOT see his pictures so I can only guess.

    --
    There is a spark in every single flame bait point.
  81. This computer dosen't look very new. by Anonymous Coward · · Score: 0

    Anyone notice this thing still has ISA slots? What's the use of overclocking a Pentium II ?

  82. Mirror by clinko · · Score: 1

    I managed to grab a mirror with images here: Oil Computer

  83. Re:If he gets /.d will his motherboard catch on fi by __aahlyu4518 · · Score: 1

    "And what if his cat gets thirsty? Will it suffer any ill effects?"

    Only if it shits all over MY garden after laxating itsself with that oil

  84. Hard drive by ehiris · · Score: 1

    Why can't the hard drive be submerged? Does the oil leak into the casing?

    1. Re:Hard drive by Anonymous Coward · · Score: 0

      Yes. Take apart an old junk hard drive sometime --There's a small hole in the cover with a felt filter pad behind it. . That way internal/external air pressures equalise as temperatures/air pressure changes, but dust can't get in. What with temperature and pressure changes, plus capillary action, oil will get in if you immerse the drive. Not good on something requiring a micron sized gap between disk and head.

    2. Re:Hard drive by klui · · Score: 1

      I think it goes like this: Modern hard drives require a thin film of air for the heads to ride on. Breather holes on the tops (usually) of HDs let the air in--they get filtered.

  85. Plus it's not mineral oil.. by Anonymous Coward · · Score: 0

    The cat would be soo internally lubed up, hairballs wouldn't be any kind of problem.

    If it were, you'd have cat diarrhea all over to contend with, plus a greasy-ass cat, dead or not.

    1. Re:Plus it's not mineral oil.. by Thud457 · · Score: 1
      --

      the preceding comment is my own and in no way reflects the opinion of the Joint Chiefs of Staff

  86. Dielectric constant & high speed circuits by G4from128k · · Score: 5, Interesting

    I'm surprised that the PSU and all the cables (like speaker/CAT5) work at all, I feel so uneducated.

    Actually, I'd be more worried about the high-speed circuits in the machine. Oil does not conduct electricity, but that doesn't mean its electronically equivalent to air.

    Oil has a dielectric constant of between 2 and 3 (depends on the oil) and that will affect the capacitance on and between the traces of the circuit-board. The signals will run a little slower on the board and have a bit more cross-talk. Its probably not a big deal -- the materials in the circuit board have a bigger effect -- but it could slow the signals enough to reduce reliability in a marginal design.

    --
    Two wrongs don't make a right, but three lefts do.
    1. Re:Dielectric constant & high speed circuits by Afrosheen · · Score: 4, Funny

      Read: don't try this with PC Chips or ECS motherboards.

    2. Re:Dielectric constant & high speed circuits by Anonymous Coward · · Score: 1

      There is also the problem of oil actually soaking into various parts. The ICs are probably safe (they are basically sealed), but what about the capacitors? Many of them are not sealed (mostly sealed but not totaly), and eventually the oil could soak in and cause a shift in value. The good news is that most of the electrolytics (which tend to be the unsealed types) are mostly for power filtering, so a slight shift in value isn't going to be such a big deal.

    3. Re:Dielectric constant & high speed circuits by petermgreen · · Score: 1

      i seem to remember that electrolytics have EXTREMELY wide tollerance bands anyway (think sometimes as much as 50%). They aren't really of any use for anything precision anyway.

      --
      note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
    4. Re:Dielectric constant & high speed circuits by Anonymous Coward · · Score: 0

      It's usually 20% for electros.

    5. Re:Dielectric constant & high speed circuits by DrLex · · Score: 1

      Actually the tolerance for elcos is asymmetric: the tolerance below the indicated value is tighter than above it. This is because in the applications they're used for (power circuits), it's often better to have too much capacitance than too little.

  87. water might be more suitable by Anonymous Coward · · Score: 0

    One of my friends did almost the same thing with water some time ago and his main board and PCI cards are still working fine. To my knowledge water has a higher specific heat capacity than oils meaning you don't have to move it around that fast.

    1. Re:water might be more suitable by Arvster · · Score: 1

      Now please explain how it is possible to do it with water? A guy that made psu with oil tried it before with water and as a result two psu's were gone- even with DISTILLED water. Sounds liek bullshit to me...

    2. Re:water might be more suitable by La+Camiseta · · Score: 1

      If it wasn't for the fact that once anything is in that water for any ammount of time it'll both start to corode the metallic contacts as well as become electrically conductive.

      That's why he used mineral oil. It's electrically neutral, and doesn't corrode metallic components.

  88. the hard drive is the worst offender! by pair-a-noyd · · Score: 1

    I have a WD 120gig and it sounds like an A-10 Warthog pulling out of a dive after straffing a Taliban T-72...

    God I hate WD drives... OTOH, I installed a new Maxtor 250g for a friend and it was so quiet I had to pick the drive up and feel it gyro in my hand to be able to tell it was running.

    I don't mind fans so much but the whine of hard drives is pretty unbearable, especially when you have 7 pc's running at the same time.

    But it would be nice if they could work on quieting everything down. It's a noisy world we live in. Too noisy.

    1. Re:the hard drive is the worst offender! by greg1104 · · Score: 1

      I was in a doctor's office the other day and the doctor was putting all her notes into a desktiop PC in the exam room. It didn't sound right; I put my head closer to hear better, then told her it was a Western Digital drive, the bearings on it were starting to go bad, and it would likely last at most a few more months before failing. She looked at me like I was crazy. After I showed her how to use the Control Panel so she could confirm I was right about the brand, I had considerably more credibility with that prediction. She made sure all the data on that system was backed up.

      Anyway, you answered your own question here. Don't buy that kind of Western Digital drives if you care about the noise. Any of the newer drives with fluid bearings will be much quieter. Maxtor's drives have them (for the few months the drive lasts, at least). Many of Seagates drives are even quieter, but they're not quite as fast as the Maxtor units. Even Western Digital is supposedly has their "Fluid Dynamic Bearing" models out now.

  89. Thanks, I'm well aware of that danger... by the_rajah · · Score: 1

    At one time I worked for an electric utility and it was a definite consideration there in dealing with the old transformers. So no, I didn't get into the oil. I'm not a union employee anyway and can't mess with the hardware or I'd get in big trouble. I can design it, oversee installations, oversee troubleshooting and program the controllers (in assembly language), but can't pick up a screwdriver on a job site. This old oil is a problem the owner will have to deal with at some point. It's really interesting to see some of the old well-built gear that still works well as long as it's maintained.

    --


    "Do the Right Thing. It will gratify some people and astound the rest." - Mark Twain
  90. Now I understand why we invaded Iraq by Anonymous Coward · · Score: 0

    nt

  91. Very similar by fxer · · Score: 4, Informative

    Someone did this a few years ago, but they pumped the oil over an air conditoner coil to get it even cooler, pics are awesome!

    http://www.octools.com/index.cgi?caller=articles/s ubmersion/submersion8.html

  92. why not sink the HD too? by Anonymous Coward · · Score: 0

    why bother taking the hard drive out?
    it is sealed, isn't it?

    floppy/cdrom i would understand, just not the HD

    1. Re:why not sink the HD too? by La+Camiseta · · Score: 2, Interesting

      No, they aren't sealed. They do have a lot of filtering between them and the surrounding air, but they aren't sealed.

  93. so... by egyptiankarim · · Score: 1

    now it runs like greased lightening?

    --
    Eek!
  94. Oh my god, the same asinine idea just won't die. by John+Sokol · · Score: 1

    One of my friend approached me with this Idea back in 2000 and it's was so grotesque, that I designed an entire silent computer based on thermal Conduction.

    The design can handle over 300 watts 3.X P4 cpu at full load, + drive + graphics cards and operate at near room temperature.

    Just aluminum, drive is in 1" thick thermally conductive Silicon Rubber. (I added stuff to make it conduct heat)

    Mineral Oil is just a bad idea. Even in my Aluminum design I have so much criticism about how hard is it to work on, get the parts etc. It's actually easier, but people just can't handle different then the status Quo.

    Anyhow A companie was formed http://www.nisvara.com/, never went anywhere in 3 years. We had interest from everyone one though, even free offices from NASA Ames.

    It blows away Hush computers or the Zalman stuff.

    see http://www.videotechnology.com/old6-03.html Form more info and a Photo.

    --
    I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso
  95. Uhhm,.. by UncleScrooge · · Score: 0

    We had this at the lab in 1995. This shouldn't be called "News" but 'Olds"

    --
    Slashdot 1|0 Productivity
  96. My God!! by N3wsByt3 · · Score: 1

    Would somebody PLEASE think of the chil..I mean, fish!!

    --
    --- "To pee or not to pee, that is the question." ---
  97. Looks cool... by Spy+der+Mann · · Score: 1

    but does it run? :P

    *ducks*

  98. Old and mostly pointless by Nik13 · · Score: 1

    Like you said, the idea is not new at all. I remember seeing this years ago, the whole thing was submerged in a clear plexiglass container (much like an aquarium, but lower profile and trays over it for drives).

    And generally speaking mineral oil isn't really a good coolant (not very effective at heat transfer), and it's very messy (imagine taking out parts... no thanks!). And you'd think there would be some decent cooling for the oil... I'd like to see the oil temp grahps given a decent load, it just might eventually fry ;)

    --
    ///<sig />
  99. Ironically... by jpellino · · Score: 1

    Some of the earliest hard drives were filled with oil - at slow speeds it kept the heads flying.

    --
    "Win treats sysadmins better than users. Mac treats users better than sysadmins. Linux treats everyone like sysadmins."
  100. That is wrong by xiox · · Score: 1

    Objects with larger surface areas can be placed within objects of smaller surface areas.

    Imagine an object consisting of lots of parallel plates, placed together with gaps on a base. Imagine decreasing the gap spacing and adding more plates. You can decrease the gap spacing more and more, add more plates, and the surface area will keep increasing. The surface area will soon become larger than a surrounding cube.

    1. Re:That is wrong by EggyToast · · Score: 1

      Also, the surface area of the brain is greater than the surface area of the skull.

  101. what about silicon oil? by pair-a-noyd · · Score: 1

    I bought a jug of fuser oil on ebay for $6 and after filling the fuser tank I started using the rest of it around the house. Great stuff!
    Slick as hell, doesn't seize up like motor oil.

    I have a lot of various fans around the house that I have to oil frequently. I have been using motor oil but it gums up after a while and the motors seize up. So I cleaned them all up and used the silicon oil on them. Man, it doesn't get any smoother than that. Not one seizure yet.
    And, it does NOT break down plastic and rubber like other types of oil does so it's safe to use on just about anything. And as far as I know, it's non conductive and non-flamable. I just don't know about the cooling properties of it. Though I can't imagine that it would be any worse than the cooking oil or mineral oils, which BOTH are flamable and both will break down plastics and rubber..

    And it's cheap enough...

    1. Re:what about silicon oil? by MrBandersnatch · · Score: 1

      I did some research into this last year and Silicon Oil looked about the best bet as an *afordable* submersion medium. Industrial grade oils can be bought with a low viscosity and a high enough flash point so as not to be a potential fire hazard.

      Sadly Ive not had enough free cash to pursue it beyond the paper research phase (bored of seeing these experiments with a PII - how far can a decent processor/graphics card be overclocked using this cooling solution was what I was looking to answer).

    2. Re:what about silicon oil? by Arvster · · Score: 1

      One of the best would be the transformer oil, used in high-voltage transformers. This is specifically made so that it does not conduct anything and it also could be found in large amounts- transformers need a lot of it. Although, as I said it's more useful to use it just in psu and for the rest just make a decent water cooled system.

    3. Re:what about silicon oil? by Anonymous Coward · · Score: 0

      On their site they tell something about transformer oil to be not very healthy...

    4. Re:what about silicon oil? by Vitriol+Angst · · Score: 1

      Transformer oil sounds safer to me... but what about viscocity?

      And you'd have to test the Silicon oil over time and be sure it doesn't release toxic fumes or explosive gases. I'm sure that companies have probably tried this before. Of course, if they couldn't sell it, they might have gone to a proprietary substance. But it's more likely there is a byproduct that shows up enough to make it dangerous.

      But it's worth a shot. I would just test it with a smoke/heat detector when leaving it running. It would take a lot more to test for noxious substances.

      --
      >>"ad space available -- low rates!!!"
    5. Re:what about silicon oil? by Guru2Newbie · · Score: 1
      Isn't transformer oil full of carcinogenic PCBs? ( polychlorinated biphenyl--not good stuff to be around.

      From the Wikipedia section:
      PCB mixtures have been used for a variety of applications, including dielectric fluids for capacitors and transformers, heat transfer fluids. ... Their chemical and physical stability has also been responsible for their continuing low-level persistence in the environment, and the lingering interest decades after regulations were imposed to control environmental contamination.

    6. Re:what about silicon oil? by The+Cisco+Kid · · Score: 1

      Grr..

      SiliCON - think sand, microchips (say 'CONvict')

      SiliCONE - think lubricant(oil), bathtub caulk, breast implants (say 'CONEheads')

      Two entirely different materials

  102. Bummer by Kludge · · Score: 1

    The hard drives are the real noise makers on my computer. Especially since there are 4 of them.

  103. A quick question by skwang · · Score: 1
    I did this for a year or so using mineral oil

    One question. How did you clean the components afterwards? I assume you didn't just throw everything away and reused some of the parts. Didn't the unused expansion slots on the M/B and the open USB, serial, etc. ports have oil lodge inside of them?

  104. wouldn't the vegetable oil get rancid? by kendoka · · Score: 1

    just wondering if he has to change out the oil a lot

  105. Oily hardware by FridayBob · · Score: 2, Insightful

    I don't think I'd want to buy any secondhand parts off of this guy.

  106. a transforming experience by Anonymous Coward · · Score: 0

    Shades of Tesla

  107. I'm just waiting... by suitepotato · · Score: 1

    ...for someone to figure out how to do a "lava lamp" effect with this, mount their hardware in a rack that's inside a large clear acrylic tube like those used for fancy aquariums, and watch all the pretty backlit blobs moving this way and that. That would be cool.

    --
    If my grammar and spelling are off, I am [distracted/tired/careless] (take your pick)
  108. Canned air not recommended for cleaning... by DaveM753 · · Score: 3, Funny

    Stickiest dust bunnies EVER.

  109. Big fans not a bad idea by WebCowboy · · Score: 3, Interesting

    And you could add 2 giant fans to blow air across the fins to keep it even cooler!

    That is actually a good idea that really would make cooling more efficient. Larger fans can move as much or more volumes of air at slower RPMs than smaller fans. Lower RPMs means less wear on bearings and quieter operation.

    IIRC that is the strategy used in the new BTX form factor cases--the heat sync on the CPU is really big with a lot of fins and a big fan that draws air through those fins and over the motherboard (to cool the chipset). Current ATX setups are most often laid out poorly for cooling, and you end up seeing high-end systems with 3 or more fans in the case. It is the need for multiple small fans that makes these PCs noisy, not the fact that they require fans at all.

    I still think it would be great to see the return of the days when chips and power supplies ran cool enough to allow for practical convection cooling. My fanless Atari ST was blissfully quiet--even the comparable IBM ATs of the day that only had a single fan in the power supply were horribly loud next to it.

    1. Re:Big fans not a bad idea by julesh · · Score: 1

      new BTX form factor cases

      BTX??? Whoever called it that deserves to be shot.

      ATXX would be a much better name. To be followed by ATXXX, of course.

  110. I'd give'em an upper deck by Anonymous Coward · · Score: 0

    I'd wait until he had a party and after everyone passed out, I'd sneak up and release a steamer into the oil.

    Not sure if I'd wait to see their reaction on the webcam or light it up as I left.

    Smokin' a turd in purgatory.

  111. SCO Next by Nom+du+Keyboard · · Score: 1

    Now we should dump SCO in there so that they can dive down and see if he's running unlicensed Linux.

    --
    "It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
  112. Re:Oh my god, the same asinine idea just won't die by renehollan · · Score: 1

    This coiuld probably be ressurected as a silent media PC with serious horsepower, if the case were styled a bit better. Think "high-end" audio monoblock class A amps, the heat problems they face, and how they're styled.

    --
    You could've hired me.
  113. Re:If he gets /.d will his motherboard catch on fi by th3space · · Score: 1

    The flash temp is supposed to be something like 265F...autoignite is somewhere around 500-600F. I don't know how hot you keep it in your house, but I don't think it'd be much of a problem in mine. ;)

    --
    "How like you to drag your keyboard to a gun fight." - Aaron Bedard (BANE)
  114. BS! by Anonymous Coward · · Score: 0

    i think it's a scam.
    even if he did drop it in the tank, oil would eat through rubber parts and thus short-circuit the whole thing.

  115. Long-haul Effects? by Devil · · Score: 3, Interesting

    As this is really a re-hash of an old story, I'd be more interested in what happens to these rigs over the long haul. How long does the computer last in oil? How often does he have to change the oil? How does he cool the oil? How long before the mobo and cards are somehow affected by the oil?

    Answering *these* questions would make for a much more interesting article than just "Hey, dude, I put my mobo in oil! I'm l33t!"

    1. Re:Long-haul Effects? by RubberDogBone · · Score: 1

      Affected? Well, I never! HMPH! /joke

      Not sure if there's much of an effect, as-such. I have worked with some printing systems where circuit boards were submerged in mineral oil. Being dunked in oil -contaminated with ink, no less- was the normal state for those machines. They ran fine but I suppose they were purpose-built for that.

      Heat is not going to be an issue. The oil tends to stay at room temp and it disperses heat pretty well. I suppose he could put in a passive heat exchanger or connect up a pump and run the oil through a transmission cooler with a fan blowing on it. But that's probably total overkill. Take the heat output of a CPU and divide it by the mass of oil and the average oil temp is not going to go up that much.

      He should not need to change the oil because it doesn't "go bad" or wear out. All it's doing is conducting heat. There might be some evaporation over time and the oil may get dirty if he uses dirty PC parts or leaves the lid open to room dust or something. There are oil filter kits for this if absolutely needed. It's just a recirculating pump and an oil filter like a car might use. No big deal.

      --
      Sig for hire.
    2. Re:Long-haul Effects? by F34nor · · Score: 1

      That was the Dr. Freezze (sp.) or Frreeze (sp.) Project? He used a 10,000 BTU air conditioner but didn't sumberse the whole thing and got serious issues with condensation. His was in a blue foam box he glued together. For this kind of thing I put the coller in the oil and then seal the thing so there was no air or room for condensation.

  116. Bah... by Blue-Footed+Boobie · · Score: 1
    Been there and done that (albeit unfinsihed).

    Also, mine wasn't as ugly:

    Picture 1

    Picture 2

    Picture 3

    --
    DAMN YOU OCTODOG! DAMN YOU TO HELL!
    1. Re:Bah... by d474 · · Score: 1

      Yeah, yours looks like you put some thought into it. This other guy looks like he just got bored, and dumped it in the tank.

      So was it real messy cleaning the components, or did you just throw it in the garbage when you were finished with it?

      --
      Authority questions you. Return the favor.
    2. Re:Bah... by Anonymous Coward · · Score: 0

      but have you bought the teashirt?

  117. a own 0db pc by breskeby · · Score: 1

    hello, with a friend we tried to build a 0db pc. it works for a couple of weeks, before a dead guppy indicates an error. look this: http://kluftern.homeip.net/files/0dB/0db.jpg

    --
    grz brs
  118. What about the boots? by Fussen · · Score: 3, Interesting

    So what about the connections in the PCI slots and such? Can't mineral oil get between the card and slot's contacts?

    Do you have to keep the cards perfectly still to keep a strong contact?

    Can you swap cards in the tank?

    Can you adjust a connection (USB) while the machine is on?

    I looked in the forums and nobody mentions this in english. Just stuff like "bloody brilliant"..

    1. Re:What about the boots? by Anonymous Coward · · Score: 1, Informative

      Somebody said it works.. but I think it's just from speculation. No real voltage checks or anything. Just that the computer accepted it.

      Could be fine, could be sketchy. I ran my sound card 30 percent un-mounted for months before I realized why my computer locked up once in a blue moon.

    2. Re:What about the boots? by Nogami_Saeko · · Score: 2, Interesting

      It'd work. PCI slots and other internal connectors are just pressure-fits between the interface connectors and the edge of the card. It's actually a pretty tight connection in there, so oil isn't likely to be a problem.

      I don't see why USB and card swaps wouldn't work. Unless the stuff is extremely thick, it wouldn't make any difference.

      If he was a real man though, he'd immerse his CD drive and HD inside too :P

      N.

      --
      "Nothing strengthens authority so much as silence." - Charles de Gaulle
    3. Re:What about the boots? by Hognoxious · · Score: 1
      Can't mineral oil get between the card and slot's contacts?
      No more than air, in a conventional installation, could.
      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
  119. Sigh. Slashdotting. by randalx · · Score: 1

    He should have submerged his webserver in oil!

    Use mirrordot and give his server a break.

  120. I'd be worried about electrolytic capacitors by melted · · Score: 1

    I'm pretty sure they aren't completely sealed, and submerging them in oil can have negative effect on electrolyte (and therefore on all components that these capacitors filter the power for).

  121. Perhaps it will also help.... by zogger · · Score: 1

    ...eliminate those "zinc whiskers" we heard about here before.

  122. Lots of fuel by Anonymous Coward · · Score: 0

    Oh good! Lots of fuel for when the thing overheats and ignites the oil. I'm not sure how flamable mineral oil is, but as a general rule oils burn, and burn very hot. On top of it, some plastics are dissolved when in contact with oils.
    I'd like to see the temp for the CPU, graphics card's, and other heat sensitive components of this. The oil is slowing but steadily going to heat up. He will need some heat exchange between the oil and the ambient. In short, some things will dissolve, slowly heat up and finally burn. If you ask me, it's trouble brewing.

  123. Re:If he gets /.d will his motherboard catch on fi by WillAffleckUW · · Score: 1

    The flash temp is supposed to be something like 265F...autoignite is somewhere around 500-600F

    Well, that will take a while before it gets too hot then ... never mind.

    Wouldn't want to be standing next to it when it's slashdotted though, the incadescent wavelength would be pretty toasty ... maybe it wouldn't burn, but the table or nearby papers and books might.

    There is safety. There is perceived risk. And there's burning your face off because your wings might not melt but your cotton fiber scarf will.

    --
    -- Tigger warning: This post may contain tiggers! --
  124. Fish + Laxative = FUN FUN FUN!!! by Anonymous Coward · · Score: 0

    I tried this trick just last week. The problem is, the oil is a laxative, and my fish couldn't stop shitting all over the place! In no time flat, my MoBo was covered with fishy diarrhea!!!
    note: fish-poo is an INSULATOR...my MoBo quickly reached 200 degrees!

  125. Nuclear Reactor / Pure Water by Venner · · Score: 1

    The nuclear reactor I worked with as a grad student had bare incandescent lightbulbs in metal fixtures (I'd assume something non-corrosive) submerged in the water* surrounding the core, so that you could see to the bottom. Obviously, the water is quite pure.

    What was more impressive, of course, was watching the core power up, as you stood on the walkway directly above it. The blue glow from the Cerenkov radiation is just plain impressive, no matter how often you see it.

    *light water, in case you were wondering.

    --
    A preposition is a terrible thing to end a sentence with.
  126. Drop the temps even further by acehyde · · Score: 1

    I wonder if you put the aquarium in a freezer, how far could over-clock the CPU and would it cause any problems with the mineral oil when you brought the temps to 20 - 30 degrees)?

    --
    Insert witty comment here
  127. Vegetable Oil != Mineral Oil by Anonymous Coward · · Score: 0

    He says in TFA that it's vegetable oil, and it obviously is not mineral oil since it's yellow and not clear. I wonder if this would work with mineral oil or not. Different types of oil are very different chemically so there may be some that work and some that go poof.

    1. Re:Vegetable Oil != Mineral Oil by kureido · · Score: 1

      Not all mineral oils are clear, and mineral oils are certainly used in electrical equipment. Dielectric oil, used for insulation and arc-extinguishing in power distribution equipment like circuit breakers or power factor correction capacitors, usually has a nice yellow tint to it straight from the manufacturer.

      Best part is, you can usually get 55-gallon drums of the stuff from a local rural power co-op. (The stuff makes great diesel fuel once you filter out the carbon -- I used to use it in a Reddy-Heater to keep my workshop warm in the winter.) Just make sure the used oil is PCB-free, which it should be since companies that handle used oil are generally required to submit extensive paperwork on PCB-contaminated oil to verify that it's disposed of properly.

  128. The best silent PC... by Cinquero · · Score: 1

    ... is a good notebook with a silent drive from Fujitsu, eg. the MHT2080AT with 80 gigs. Not cheap, but portable, fast and reliable. And, to be honest: real good silencer kits cost more than the difference between a PC and a good notebook.

  129. Heh... by Anonymous Coward · · Score: 0

    Am I the only one wondering how smart this is? I mean, computers might spark... nothing like an oil fire

  130. Not just for speed by happyclam · · Score: 1

    Seems like everyone is missing the real point of doing this. The aesthetic value! Forget those swoopy-doopy new tower cases. These aquariums are see-through and can really enhance a room, particularly when placed in a window with a nice view. And those ribbon cables really add interest and texture. I'm sure we'll be seeing these on HGTV any day now as a new design feature!

    --
    He looked at me and said, "Kid, we don't like your kind, and we're gonna send your fingerprints off to Washington."
  131. Celeron 550? by Anonymous Coward · · Score: 0

    How well would this work with a modern CPU?

  132. The best part is returning the board to Fry's by TheLittleJetson · · Score: 1

    ...after it's been soaked in oil for a few days.

  133. news? by XO · · Score: 1

    News? 7 years old is news?

    --
    "Champagne for my real friends - and real pain for my sham friends!" http://ericblade.postalboard.com/
  134. Oil change by Anonymous Coward · · Score: 0

    So how many miles before an oil change? I'm sure most pc nerds would suggest 3000, but that's just to get more money out of your pocket.

  135. Losers unite! by Anonymous Coward · · Score: 0

    I can't wait to see what sort of special mods he's made to the protective casing on his $200-a-pop harddrives! Too many blithering idiots out there.

  136. Coral Cache by starrsoft · · Score: 1

    When it said coral cache, my first thought was: "He didn't remove the ornaments from the aquarium?"

    --
    Read my blog: HansMast.com
    1. Re:Coral Cache by hamfactorial · · Score: 1

      I expect that you likely read some comments, found out which jokes were not already used (i.e. "I, for one, welcome our new mineral-cooled fishtank overlords") and tried to come up with one. Unfortunately for you, all of the +5 funny modpoints have been given, and all you get is me being a jackass to you in a thread way at the bottom of the comment page. I did appreciate the marine aspect of your joke though. Yarrrr...

      --
      Did you know subscribers can see articles in the future? Holy shit!
    2. Re:Coral Cache by Legion303 · · Score: 1

      In Soviet Russia, oil PCs you!

      No, wait...Imagine a greasy Beowulf...shit. Listen, I'll get back to you.

    3. Re:Coral Cache by starrsoft · · Score: 1

      Usually that's what I do, but amazingly enough, it wasn't that way this time. That *was* my first thought on reading that phrase and I *didn't* read all the "jokes" in between.

      --
      Read my blog: HansMast.com
  137. The problem, then and now... by artemis67 · · Score: 4, Interesting

    is that every last connection has to be SOLDERED DOWN in order for this thing to work for more than half an hour.

    The problem the guy ran into six years ago was that the mineral oil seeped in between all of the connections and disrupted the flow of electrons; PCI cards, AGP card, CPU, IDE, power... everything. A stock motherboard simply won't cut it, you have to have a custom board with everything hard-wired to it to survive the submersion.

    This story is a dupe because it doesn't solve the basic problem.

    1. Re:The problem, then and now... by brxndxn · · Score: 1

      Cough.. I call shenanigans on parent thread.

      --
      --- We need more Ron Paul!
    2. Re:The problem, then and now... by orasio · · Score: 1

      Use corn oil.
      Problem solved.

  138. Would you like fries with that? by Robber+Baron · · Score: 1

    If his website is running on it...instant deepfryer!

    --

    You're using her as bait, Master!

    1. Re:Would you like fries with that? by manojar · · Score: 1

      Clippy: Looks like you are trying to fry something, would you like some help?

  139. Why can't the hard drive be in the OIL by jbplou · · Score: 1

    I thought hard drives were completely sealed so why does it matter if it under the oil.

    1. Re:Why can't the hard drive be in the OIL by dygital · · Score: 1

      It can't be in oil because of the air-pressure hole in it. It cant be covered either.

  140. silicone oil, rf question by mkstowegnv · · Score: 1

    I am considering doing something like this with (Dow 561) transformer silicone oil to protect electronics left in the field here in humid Florida. I suspect that in the long run this may or may not produce problems because the oil is inert for most things but not compatible with PVC for example. See section 3.10.1 in http://www.dowcorning.com/content/publishedlit/10- 453-97.pdf?DCAPP=&DCWS=Power%20and%20Utilities&DCW SS=Fire-safe%20Transformer%20Fluid Some plastics may not be compatible with mineral oil either after months or years. I bought the 561 in bulk, but anyone wanting to experiment with a small amount of silicone oil can buy the DOT5 type of brake fluid at an autostore (it is mostly silicone oil). On a separate note, I have been meaning to look into the radiowave absorbing properties of silicone oil - if it is high enough a cheap plastic case could be used instead of metal (heat dissipation would be less but that would not be a problem for me). I'll try to follow up with a comment if/when I find out.

  141. CD Rom? by Valiss · · Score: 1

    The only component I found that could not be submerged was a hard drive.

    Where you able to submerge the CD ROM drive? Wouldn't that negatively effect the play speed?

    --

    -Valiss
    1. Re:CD Rom? by real_smiff · · Score: 1

      not to mention the laser reading the disc.

      --

      This is my Sig, this is my Gun. One is for Slashdot and one is for Fun.

  142. You want fries with that? by crovira · · Score: 1

    Hope it never gets hot enough to boil. (If the guy's runing a Pentium 4 it just might.)

    --
    MSBPodcast.com The opinions expressed here are my own. If you don't like 'em... Think up your own stuff.
  143. remember dr. freeze? by krunk4ever · · Score: 1

    i'm not too sure when i saw this, but it was probably 8 years ago. there was a guy known online as Dr. Freeze and he had a site filled with pics of his submersion. He had bought like 3 bottles of mineral oil and submerged his motherboard and etc inside a styrofoam box. He also had a air pump. Later on in the pictures, he took apart his a/c and turned it on flew blast.

    I used to have the pictures, but it's been too long and probably lost during one of my hdd crashes. if you google "dr freeeze" and "minieral oil", you can see people talking about him.

  144. environmental issues by qwasty · · Score: 1

    How do you dispose of the oil? You can't just pour it down the sink...What are the consequences of everyone having a few dozen gallons of oil for home electronics that become obsolete in an average of 2 years?

    1. Re:environmental issues by Dog135 · · Score: 1

      Actually, you can pour it down the sink. Mineral oil is used as a laxative, and is the primary ingredient in baby oil.

      --
      "That's so plausible, I can't believe it!" - Leela
    2. Re:environmental issues by qwasty · · Score: 1

      mineral oil is a byproduct of the oil industry. In other words, dumping 2 gallons of it down the sink is more-or-less your own Exxon Valdez environmental disaster.

    3. Re:environmental issues by Kinetix303 · · Score: 1

      Yes, you're right, because we won't invent municipal sewage treatment until 1898!

    4. Re:environmental issues by Dog135 · · Score: 1

      mineral oil is a byproduct of the oil industry. In other words, dumping 2 gallons of it down the sink is more-or-less your own Exxon Valdez environmental disaster.

      People rub this stuff on their baby's skin. (both child and adult types) People eat this stuff. You can find it at the grocery store next to the pepto-bismo. Just because it's a byproduct of the oil industry doesn't mean it's toxic. I'm sure the oil industry extracts water from their oil as well.

      According to the directions on a bottle I have, you can administer up to 3 tablespoons to children 12 years of age. And up to 1 tablespoon to children 6 years of age. Having trace amounts of this in your drinking water isn't going to hurt you. I have a septic tank and a well, and I'd dump 2 gallons of this down my drain without hesitation.

      --
      "That's so plausible, I can't believe it!" - Leela
    5. Re:environmental issues by qwasty · · Score: 1

      Here's the MSDS - http://www.jtbaker.com/msds/englishhtml/m7700.htm - It's not particularly harmful stuff, but it's not something that just "goes away" either. It's insoluble in water, and would probably be easy to remove at a sewage treatment facility, but one way or another, it has to be removed and disposed of properly - if not by you, then by someone more responsible. Fish can't breathe it, ducks can't eat it. It won't go away. Please don't dump it down the drain. I'm not an environmentalist per se, but the thought of people dumping inorganic oils down the sink willy-nilly just sets off my "Are you insane" alarms.

    6. Re:environmental issues by Anonymous Coward · · Score: 0

      Everyone already has awful motor oil sloshing around in their cars. I think they could deal with oil in computers.

    7. Re:environmental issues by Anonymous Coward · · Score: 0

      I guess he should just build a rocket and shoot it off into the sun. Or wave his hands and majick it away.

  145. MMHMM.... by organicchunkysalsa · · Score: 1

    This is new news? It's been done before. Move on there is nothing to see here.

  146. Cool Idea - I like it ! by killercoder · · Score: 1

    First thing I thought of was hmmmmmm I want Fish in there.

    Imagine a standard aquarium with the PC occupying the bottom third of the tank. Fill the bottom third with mineral oil.

    Fill the top two thirds with Water and put in fish. Assuming we keep surface area of the glass is enough to keep the heat in control, the fish could live a long happy life.

    I may experiment with this.......oil and water don't mix - so the fish should be fine - right?

    Dupe or not, I still like the concept.

    1. Re:Cool Idea - I like it ! by The+Cisco+Kid · · Score: 1

      You've got it backwards - oil floats on top of water. You'd have a hard time feeding those fish, or getting them in or out of the tank.

  147. I posted this story on: by t35t0r · · Score: 1

    2005-04-12 16:39:15 Linux box in a tub full of vegetable oil (Hardware,Hardware Hacking) (rejected)

    ..so why was it not accepted then? I found this story from here

  148. Efficiency by rice_burners_suck · · Score: 1
    I think the hard drive should be placed in oil and the motherboard should be placed in salt water. That would allow the system to run a lot more efficiently.

    Proof: If, under normal circumstances, a computer will work for, say, twenty years before the motherboard stops working, and a hard drive will work for, say, five years, then by using the setup I described, you will be able to accomplish the same in the time it takes to plug it in and turn it on for the first time.

    Efficiency is, after all, the wave of the future.

  149. NOT mineral oil by flip-flop · · Score: 1

    No, it's not mineral oil he's submerged his computer in, it is in fact vegetable oil! Had you accepted my submission, oh CmdrTaco, this little typo would never have crept in....

  150. Nice... or you could just buy a Mac... by joeyblades · · Score: 1

    Of course, while a Mac will run cooler, it won't look nearly as cool as a motherboard in a vat of oil...

    Sheeesh...

  151. Yeah.. by Anonymous Coward · · Score: 0

    but where's the fish? 0mar

  152. Project Think Tank by L0k11 · · Score: 1

    You are absolutely right.
    That case is much better than this fish tank! Love the lighting too.

    --
    "Those who cast the votes decide nothing. Those who count the votes decide everything" -- Josef Stalin
  153. OLD NEWS! by Stanneh · · Score: 1

    ffs this is old as hell i seen this on pretty much every other tech news site over the last few weeks.

    --
    I Predict A Riot
  154. Uh oh by Anonymous Coward · · Score: 0

    Computers running on oil? Cue Bush jokes.

  155. natural laxative by Anonymous Coward · · Score: 0

    I don't see what's wrong with a bowl of oatmeal.

    Cook some oatmeal and bananas. Mix with yogurt or applesauce. You'll be running to the toilets in half an hour.

  156. I saw this in 1994 w/ a TV set. by FauxReal · · Score: 1

    I was at the "Icon Byte Bar and Grill" in the SOMA area of San Francisco. They had a few televisions with the covers removed and completely submerged in mineral oil filled fish tanks of different shapes and sizes.

    I also think this was one of the very first internet cafes, as I had never seen one before and the web was crap.. I remember thinking as I browsed with NCSA Mosaic, "what's the point? I'll just use gopher, it does the same thing."

  157. Another advantage to overclocking! by XxXoldsaltXxX · · Score: 0

    Now when you overclock and your pc starts to heat up, you can make fried chicken!! yay!!

  158. Re:It's been done (BETTER, and), it works by blackicye · · Score: 1

    Actually the link is now long dead, but someone did this in 2001, and did it in an even more haphazard and impressive manner!

    Same deal, but in a Strofoam box, with Mineral Oil and an Eheim pump moving the oil from the reservoir where the mobo and proc were situated and over the bare compressor coils of a stripped 1000btu Air conditioning unit resting on top of the whole setup.

  159. What the ... by Anonymous Coward · · Score: 0

    but, no uhh, its not what you think boss, I was just fixing my pc...

  160. This Isn't News.. by lmnfrs · · Score: 1

    This has been done before, more than once. The first time I read about it was long enough ago that I don't remember when it was..

  161. Crumbs! by xixax · · Score: 1

    Wouldn't the fish be crumbed or battered?

    --
    "Everything is adjustable, provided you have the right tools"
  162. (-1: Flamebait) -or- "Old news" by Anonymous Coward · · Score: 0

    I actually saw those same exact images over a year ago. Is Slashdot really hurting THAT bad for content? I really wouldn't think so.

  163. No... by Anonymous Coward · · Score: 0

    It didn't kill them... it made them STRONGER!!!

  164. The Edge Effect by cannuck · · Score: 0

    Asumming that the computer is plugged in and is running (yes/no?)- a large proportion of the heat in the oil would leave via the corners (the Edge) of the tank. In the same fashion that heat leaves a house through a window. Even in a "modern" window - most of the heat is lost at the edge of the glazing. Hence the EDGE EFFECT. Naturally heat would be lost from the surface of the oil - buy not that much because of the upper half of the tank stops convection currents from cooling the surface of the oil. So most of surface heat lost by conduction - but air is a fairly good insulator and would slow it down.

  165. Re:Nothing to see here - EXCEPT the bong... by Anonymous Coward · · Score: 0

    ... behind the tank. This guy knows cooling mechanisms, that's for sure...

  166. Fluorinert prices by kaveat · · Score: 1

    Fluorinert FC-77
    5 ml - $28.16
    25 ml - $89.25
    100 ml - $257.38
    250 ml - $561.74
    Found at:
    http://www.sciencelab.com/
    There have been cooling systems on /. that cost at least as much as 2 liters of this. I wouldn't be surprised if someone was already doing it.

    1. Re:Fluorinert prices by Anonymous Coward · · Score: 0

      FC-43 has a fractionaly higher thermal conductivity and a more apropriate -57C to 155C liquid range.

      Fluorinert (TM) (FC-43)
      1kg @ £165
      http://www.fluorochem.co.uk/productdetails.asp?id= 123830&name=Fluorinert+(TM)+(FC-43)+(Reg)

  167. WTH? by Anonymous Coward · · Score: 0

    This isn't new at all or even innovative?! I've known you could do this for years, people do it all the freaking time. How the heck did this of all sites make front page? I mean really there are better examples than this.

    Also leaving the fans in, is a bad idea, the increased load changes the resistance and it's bad for the motherboard.

    What a load of crap.

    Hey guess what? People have been using inert liquids to cool computers for decades!

    Frick, some jagoff throws his tower into an oil bath and you sucks wet your pants?

    This is dumb. Stupid dumb slashdot weenies.

    Hey guess what? An oil bath will not let you overclock your computer to some magic level.

    There is a little problem called specific heat capacity. That isn't even as much as a problem as THE CHIP ISN'T PERFECT! gadzooks what?! Yes children if you want more power from the same chip you can't just jeep ramping up the speed of the clock.

    Can we get some real people here?

    HELLO?

    I mean, wow what a great idea, wish I'd thought of this. Oh wait no I did... 5 years ago, did anybody slashdot me then? No, why? Because informed people still made calls back in those days!

    So on another note, it looks like pee!

    1. Re:WTH? by Anonymous Coward · · Score: 0

      so let me get this straight: what you're saying is - this has been done before, yeah?

      obligatory GMV quote: "You are in more dire need of a blowjob than any white man in history"

  168. Firehouse by CarpetShark · · Score: 1
    So if this thing overheats, does it deep fry itself?
    No, but if you're lucky enough to have your powersupply burn out, you might just find your house burning down due to the flaming tank of oil... ;)
  169. On Slashdot before by marcovje · · Score: 1


    I can vaguely remember this being on Slashdot before. Though then it was iirc a AMD 5x86 on 160MHz or so.

  170. Solution to breakfast problem. by Circlotron · · Score: 1

    "is that pure water is a goog insulator."
    Now we know how to stop eggs shorting out when you boil them.

  171. It's been done. by Anonymous Coward · · Score: 0

    Some buddies of mine did this last year, hooked it up to a home airconditioner, and took it to QuakeCon. http://users2.ev1.net/~eggy/lanparty/graphics/fish tank_final1.jpg [ghettolanparty.com]

  172. Just nitpicking by Anonymous Coward · · Score: 0

    Use a small m for meter. I though you meant Watts per million Kelvin for a second there.

  173. Midel 7131 by elrous0 · · Score: 1
    Midel 7131 is supposed to be a good submersion fluid for computer motherboards (it was designed for transformers). It's a lot better than mineral oil, but a lot more expensive. Costs about U.S. $450 for a 5 gallon bucket.

    I believe it's more commonly used in the UK than the U.S.

    -Eric

    --
    SJW: Someone who has run out of real oppression, and has to fake it.
  174. Re:It's been done (BETTER, and), it works by orasio · · Score: 1

    Hm.............
    Maybe we have different ideas of "better".
    These guys used sunflower oil, and a container, and it works.
    A pump is overkill, and a styrofoam container is against the purpose of losing heat.
    What would be just a tad cooler is a chromed or white tin container for the oil, or even an oil can, and some rubber "feet" or isolators for the
    components.

  175. Never mind. by BrokenHalo · · Score: 1
    The only thing not submersed in oil is the hard disk

    [attack of the language nazi]"

    Nothing is submersed. It is either submerged or not.

    [/attack of the language nazi]

  176. Re:If he gets /.d will his motherboard catch on fi by th3space · · Score: 1

    you don't coat yourself and your house in flame-retardant chemicals? tsk tsk

    --
    "How like you to drag your keyboard to a gun fight." - Aaron Bedard (BANE)
  177. Re:If he gets /.d will his motherboard catch on fi by WillAffleckUW · · Score: 1

    you don't coat yourself and your house in flame-retardant chemicals? tsk tsk

    I used to, but it gets too sticky and the girlfriend says it smells.

    --
    -- Tigger warning: This post may contain tiggers! --
  178. Also reported previously by notcreative · · Score: 1
    This has been done before, as reported by slashdot almost six years ago [slashdot.org].

    well, given the regularity of dupes around here, I'll go out on a limb and say as dupes go, this one is at least new to most of us.
  179. Re:If he gets /.d will his motherboard catch on fi by th3space · · Score: 1

    Oh, well...I do that in place of having a girlfriend. I find the chemicals complain far less than the women-folk do.

    --
    "How like you to drag your keyboard to a gun fight." - Aaron Bedard (BANE)
  180. Not necessarily... by 2names · · Score: 1
    --
    "I'm just here to regulate funkiness."