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Globalwin Jefi Watercooling Kit Reviewed

shockNZ writes "[H]ardOCP has reviewed what appears to be a first in PC watercooling - an 'open reservoir evaporative cooling system.' The Globalwin Jefi has a radically different design to most systems on the market. The reservoir is open at the top, and utilizes something akin to a showerhead in order to rain the incoming hot water from the PC down onto a floating heatsink. Perhaps surprisingly, it demonstrated excellent performance and low noise levels - and as a bonus, the reservoir can be used as an aquarium."

39 of 135 comments (clear)

  1. Tropical fish casserole by syrinje · · Score: 5, Funny

    Does the temperature of the water go high enuff to poach them??!

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    1. Re:Tropical fish casserole by WolfWithoutAClause · · Score: 5, Funny
      Well, given that the cooling depends to some degree on the processor load, which in turn depends on what you are running, it mainly depends how long you play your FPS for.

      Where: FPS = Fish Poaching Software; natch

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    2. Re:Tropical fish casserole by general_re · · Score: 2, Informative
      Does the temperature of the water go high enuff to poach them??!

      Nope, but it's still probably not suitable for an aquarium. The manufacturer's test results report water temps up to 29.8 degrees celsius, or about 85 degrees fahrenheit, which is about 8-10 degrees too warm for most common freshwater tropical fish. Even their lowest reported temp is 77 degrees, which is at the top end of what you should consider safe for an aquarium.

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    3. Re:Tropical fish casserole by gbjbaanb · · Score: 4, Funny

      which is about 8-10 degrees too warm for most common freshwater tropical fish

      Are you saying I have to get a heatsink and fan to cool it down then?

  2. Er by Billobob · · Score: 5, Informative

    Hasn't open reservoir evaporative been done many times before, also called a bong? Granted it probably hasn't been done exactly this way, people have been bong cooling for years - its just a little forgotten.

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    1. Re:Er by Billobob · · Score: 5, Informative

      I know the above got modded as funny, but it really does exist - http://www.overclockers.com/articles389/ . Bong cooling hasn't been that popular in recent years however, seeing as people usually want a sexier way to watercool their PC.

      --
      If you have to ask, you'll never know.
    2. Re:Er by MikeLip · · Score: 4, Interesting

      This type of cooling is used in power plants - particularly nuclear. That's what those cooling towers are doing. The coal fired plant in my local town uses towers as well. It's very efficient.

    3. Re:Er by denthijs · · Score: 2, Interesting

      well yess, actually since ancient times :)
      but also in supercomputing.
      those cray supercomputer beauties had a big aquarium with something best described as indoor waterfall to cool the water back down

  3. hot as a teakettle by Madcapjack · · Score: 5, Funny

    And if you overclock, you can make tea with it.

    1. Re:hot as a teakettle by rzbx · · Score: 4, Funny

      As the article poster stated "...and as a bonus, the reservoir can be used as an aquarium."

      So you could cook up a bowl of fish soup too.

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  4. Case Mod? by mungeh · · Score: 4, Funny

    I'm sure I'm not alone when I say that a CPU cooling system that can double as an aquarium is something us serious modders have been waiting for. But how about a mouse pad ant farm? or a monitor that can be a hampster cage?

    1. Re:Case Mod? by carlmenezes · · Score: 2, Funny
      or a monitor that can be a hampster cage?


      That would make an interesting hamster hairstyle mod.
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  5. Failure Modes. by DAldredge · · Score: 3, Insightful

    What happens when this thing fails? Bye bye computer? I fail to see why people are so interested in liquid cooling or is it just the overclockers who use open loop liquid cooling like this?

    1. Re:Failure Modes. by BrainInAJar · · Score: 3, Funny

      "What happens when this thing fails?"

      Same thing that happens when your air cooling fan fails... your processor catches fire (that was a sweet video...)

  6. Fishies by Anonymous Coward · · Score: 5, Funny

    Yes, I really want fish crap flowing through my PC.

  7. Dangerous innovations by syrinje · · Score: 5, Insightful

    The only novel idea in this whole thing is the open tank shower cooler - which also poses the spill hazard. Admittedly the tank looks like a futuristic acrylic ventilated crab and could be considered cool in some sub-cultures - BUT - if you have kids (yeah, some ./ers do!) or pets KEEP THIS system away from your PC. If you think you have problems with your dog drinking outta the toilet bowl now....

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    1. Re:Dangerous innovations by roamingnomad · · Score: 2, Insightful

      If you look at the picture in the flash "tour", yes, it does pose a spill hazard, but it's not like it's precariously leaning over the edge of the inside of your computer. I'm hoping that the picture isn't drawn to scale, but if it is, it looks pretty hard to topple over for a little kid (I'm assuming a bigger one could be taught why not to topple it over). On the other hand, you could also get a longer tube for the water, and put the tank on, say, an aquarium stand. I've really never heard of an aquarium on a stand like that being toppled over. (once again, if it's not as big as I think it is, it might not really be big enough for some of those stands...)

  8. Silence by bmiller949 · · Score: 5, Interesting

    It may be a bit too noisy for the silent enthusiast crowd. With the pump producing 22db and the fan doing 20db at the lowest voltage, it is not as silent as the Zalman Reserator. Then again, if you used the Zalman product on an AMD 64, the reservoir would double as a drip coffee maker.

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  9. Phishing by toetagger1 · · Score: 3, Funny

    That will give a whole new meaning when someone goes Phising on your computer!

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  10. Big cenceptional problem by imsabbel · · Score: 5, Insightful

    with open circuit watercooling system is water contamination. Algae seems to be able to grow on little more then the casual dust that enters the water, and the best place to grow is where you dont want it: The nice warm and thin parts of the CPU heatsink.

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    1. Re:Big cenceptional problem by jerkychew · · Score: 2, Funny

      Even worse is when the algae combines forces with your computer innards, thereby creating a living supercomputer hellbent on taking over the world!

      Man, what am I on today...

  11. Take that salt-water aficionados! by Anonymous Coward · · Score: 4, Funny

    Up to now there's been no affective way for home aquariums to host the exotic creatures found near deep-sea volcanic vents - until now!

    (Sulfur not included)

  12. why not use? by linuxislandsucks · · Score: 2, Insightful

    Why did they not use pressure water like system?

    It would have been able to handle the heat of overclocking and woudl not need much changes..

    they system they had is what predated the pressued coolant/water radaiators incars..

    instead of using un environment friendly glycol you could use a freon subsititue..

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    1. Re:why not use? by drinkypoo · · Score: 2, Interesting

      Because it takes dramatically more energy to run a compressor than it does to run a gentle little pump and a couple of fans, probably. Besides, there are $500 products which have an air conditioning system in them, probably running R134A. Or, you could just adapt a window A/C unit or something.

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  13. how about a category.. by scrytch · · Score: 2, Insightful

    .. for "cases and cooling". God knows I'm sick to death of seeing Yet Another Case Mod and Yet Another Cooling System.

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  14. Aquarium? by Shoten · · Score: 2, Insightful

    I don't think this guy has ever really owned an aquarium. There's no way you could have it do double-duty like that, and I can sum up the problem in one word: algae.

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  15. How to kill your pc... by alex_ware · · Score: 3, Funny

    1. install Jefi
    2. fill with ice like reccomended
    3. watch the pc overheat and burn out

    --Oh your 'sposed to put ice AND water in it--
    (seriously though just filling with ice wont help as it might be cooler and might cyrogenically freeze your fish but you cant get ice cubes down the pipe and your pc might overheat in the time it takes for enough melting)

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  16. Mineral buildup? by TrumpetPower! · · Score: 2, Interesting

    The tap water here in Tempe, Arizona, is quite hard. If you don't dry the dishes, you'll get lots of spots on them. (Never bothers me, but some....)

    Combine that with the very low humidity here and this kind of evaporative system and it wouldn't be long before, instead of tubing, you had solid bars of mineral salts covered in rubber.

    Of course, you could buy de-ionized water, but, for me at least, that'd get old pretty quick.

    Cheers,

    b&

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  17. That's not H2O.... by DAldredge · · Score: 3, Informative

    That isn't H2O, it is Flurinert, and it is rather expensive.

    http://multimedia.mmm.com/mws/mediawebserver.dyn ?m mmmmmWUeyAmGQnm_QnmmmTIlYhOjxyX-

  18. Lian-Li Case by tlay · · Score: 2, Funny

    I wanted to do something like this about a year ago, but I was concerned that the temperature would sear the fish so I just ended up getting this:

    http://www.thinkgeek.com/pcmods/cases/6151/

    It's worked out pretty well. One of the fish lost an eyeball, but otherwise I've had satisfactory performance. You can't tell very well from their demo picture but the tails move and they do look fairly realistic. Some folks have actually thought they were real! And better yet, I don't have to worry about rolly poley fish heads or excriment either.

    -TLAY

  19. Cray 2 by MuMart · · Score: 2, Interesting
    The heat exchanger in the Cray 2 supercomputer used this same technique. Heat was transferred from the fluorocarbon in which the cpu circuits were immersed into an open-air water sytem.

    It even came with it's own glass waterfall thingy to keep the board happy.

  20. Shuttle - for liquid cooling that isn't a joke by Animats · · Score: 2, Informative
    If you want liquid cooling that isn't a joke, get a Shuttle PC. They've been shipping little breadbox sized machines with heat-pipe cooling for years. We use these in places without air conditioning, and they work fine. We've had five units for a year, and none have ever failed.

    No neon, no overclocking, no extra slots you don't need. Just little machines the work.

  21. Such a good idea? by Jubii · · Score: 2, Insightful

    Is it just me, or does anyone else out there think that an open container of water on your PC is a bad idea? I generally work with a cup of coffee or glass of Coke next to the keyboard, but that's a little different than having a fishbowl's worth of water sitting on top of my PC. Of course, I have really clumsy friends too...

    --

    I planned on inserting something witty here but never got around to it.
  22. 2 AM IT call... by secondsun · · Score: 4, Funny

    I can imagine being woken up at 2 AM for an emergency outage because someone forgot to water the server.

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  23. been done before by slugo3 · · Score: 3, Insightful

    shockNZ writes "[H]ardOCP has reviewed what appears to be a first in PC watercooling - an 'open reservoir evaporative cooling system.

    Its been done before.

    Fish Tank Water Cooler

    It's nice that this comes in a kit but it's usually cheaper to build it yourself. I didn't see the price of the kit in the article but I bet you could do a lot better than that cheesy looking fish tank for less money. I guess the radiator thingy sets this apart from the project that I linked to but I don't understand how agitating the water helps disperse heat. It seems like you would be better off with more coolant and a powerful pump.

    1. Re:been done before by cephyn · · Score: 2, Informative

      agitating the water will cause ripples. ripples increase surface area, just like the "ripples" on a heatsink, allowing more heat to transfer.

      --
      Moo.
  24. not truly silent by 0111+1110 · · Score: 2, Interesting

    To a silent pc purist, water pumps are BAD. I am more interested in a geo-thermal (ground-based) system, or truly passive, convective water cooling, or maybe some kind of passive water cooling that plugs directly into cold water pipes so that it works as a kind of pre-heater so that the water heater in the house doesn't need to do as much work.

    This is a cool idea though, if you can manage do find or build a quiet enough pump.

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  25. re: Using oil instead of water by Dav3K · · Score: 2, Insightful

    The problem with that approach is that oil isn't nearly as efficient at wicking away heat from the processor, nor able to cool down as easily as water. It's a fantastic lubricant, which is why it is in your car's engine, but notice it doesn't live in the radiator for precisely these reasons.

  26. Skanky Water by Craig+Maloney · · Score: 2, Informative

    Ummm... unless you're changing the water in this thing constantly, that water is going to get really skanky really quickly. Plus, if you put ordinary tap water in there, it'll have deposits and whatnot that you probably don't want to be piping around your computer. Ugh! And heven help you if you put that reservoir near sunlight.