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Building a Silent, Air-Cooled System

A reader:"Tired of those whining fans? Want some piece and quiet when working on your PC? Water cooling can be too expensive and too complicated to install, why not just stick to air cooling? This article describes how you can remove PC noise without turning the inside of your PC case into a small oven. Follow the road to silence while keeping an eye on the system temperature."

35 of 392 comments (clear)

  1. Seagte Barracuda Hard Drives by bigtallmofo · · Score: 4, Informative

    I know that they're selling some lower-end models now, but every Seagate Barracuda hard drive I've ever purchased is far quieter than comparable hard drives. I have been using them exclusively for a few years now and really enjoy the PEACE and quiet.

    --
    I'm a big tall mofo.
    1. Re:Seagte Barracuda Hard Drives by Electronik · · Score: 5, Informative

      Seagate make the quietest, most reliable drives I know of. I specify them in all my audio (recording studio) computers. Not one (touch wood) failure in 6 years.

      If your computer is scanning the drives, make sure you have fast search turned OFF in XP, it will try to index your HDD everytime it 'thinks' you aren't needing to access the drive. Also check for spyware and all the usual nonsense running in the background.

      Finaly, you can suspend your HDD or use sleeves to stop the drive transmitting the vibrations to the case. The case can act a little like a guitar body and amplify the grinding sounds.

      --
      -=test-sig_0.1.5(NoWhitespaceVersion)=-
    2. Re:Seagte Barracuda Hard Drives by steeef · · Score: 4, Informative

      I suggest you take a look at Samsung's SpinPoint drives. They're all the rage with Quiet PC enthusiasts (such as those at Silent PC Review). Barracuda's are quiet (I've got two V's right now), but they're certainly still audible, especially as they get older and the bearings wear. Apparently SpinPoints are quieter than Barracudas (at least initially).

    3. Re:Seagte Barracuda Hard Drives by Ptur · · Score: 5, Informative

      Don't know why this is posted here, the guys at http://www.silentpcreview.com/ are working on this for years!

      FYI, I'll soon be building a noiseless AMD A64-3500+ for our living room. Once you've read the articles at SilentPCReview, no problem.

      BTW, the Seagate barracuda's are no longer the quiet drives they used to be, since their acoustic managment software has been disabled (pending a lawsuit I think)

      Peter

    4. Re:Seagte Barracuda Hard Drives by badasscat · · Score: 3, Informative

      That's interesting because I have a Barracuda and it's probably the loudest drive that I've ever owned...

      It depends on the model. I have a 7100.7 (or whatever it's called) and it does not support acoustic management. It has noticeable seek noise. The versions that became famous for quietness (the IV and V) were the previous versions to mine - these did support AM.

      Meanwhile, all other manufacturers have started using FDB motors just like Seagate does, so the whine is gone, and if your drive supports acoustic management (almost all do, though you may need to download a utility to access it), then it very likely can be virtually silent too. There is no inherent advantage that the Barracuda models have in acoustics.

      In addition to my Barracuda, I also have two Maxtor Diamondmax Plus 9's and a Western Digital Performer 40 (this came with my TiVo but has been repurposed in my PC - you can't buy this drive separately). All three of these drives are quieter than my Barracuda with acoustic management set to "quiet" - in fact, one of the Maxtors is dead silent, and the other is so quiet I have to put my ear right up next to it to hear seeks. (There is a slight variation between the two units, even though they are the same model and capacity.)

      I will say that one of my Maxtors was ear-splittingly loud when I first purchased it - ironically (or maybe not), it was the retail version. My other Maxtor was OEM. The retail drive was set to "performance" out of the box, whereas the OEM drive was already set to "quiet". Maybe this is by design, as Maxtor is obviously positioning these drives for different markets, but it has obviously led to a different reputation for Maxtor than Seagate has, despite Maxtor's drives being capable (like almost everybody else) of total silence.

      The loudest part of most PC's other than the hard drive (which doesn't need to be loud at all) is the power supply. I've gone through a half dozen PSU's looking for a quiet one that's also beefy enough for my systems - I finally ordered an ironically-named Seasonic Super Tornado 350 today. Most people don't consider the PSU as a major source of noise - or if they do, they don't think they can do anything about it - but having swapped out enough of these things for one reason or another, I can vouch for the fact that not only is there a significant variation between PSU's in the volume of noise, they also can significantly affect the quality of noise from your PC. Right now I am using an Enermax PSU in one system and an Antec in another - both highly-rated PSU's from a power and build quality standpoint - but they both sound awful. They are not particularly loud (though they're louder than any other component I have), but they both emit sort of a low-pitched "buzzing" noise (it's not case vibration - I've checked - it's just the sound of the fans they're using), which I find extremely annoying. If you're looking to silence your PC, I'd recommend starting with the PSU.

      Of course, most hardcore PC users really go overboard with fans too - I admit to having six case fans in one of my PC's (mainly for show, they're LED fans), but they're almost always turned down to minimum with a fan controller. Not silent, but not loud either. In my HTPC, I have three 80mm fans, one of which is disconnected, the others turned down to minimum using built-in manual fan controls. I have no stability or temperature problems with this machine at all, and except for the PSU (that's being replaced), it's very quiet.

  2. This reminds me by bogaboga · · Score: 3, Interesting

    This reminds me of the [old] VW Beetle http://www.edmunds.com/media/reviews/generations/v w.beetle/1955.vw.beetle.500.jpg. This machine was air cooled. I do not know whether todys beetle is air cooled too.

  3. Eggs? or Britney? by RonUSMC · · Score: 3, Funny

    Reducing temperature and reducing sound... Well then how will I cook eggs or drowned out the Britney Spears from the next office over.

  4. LTSP works for me by hax4bux · · Score: 4, Interesting

    I took a old PII box, removed the hard drive, bought big heat sinks and use it as a X-terminal. Boot it via LTSP, works great. Keep hot, noisy servers out in the garage. Life is good.

  5. So buy more expensive fans? by eln · · Score: 5, Insightful

    That was a lot of words just to tell me to go out and buy a lot of expensive third party cooling systems. I was hoping for more of a hack approach, not just replacing everything with its more expensive, silent counterpart.

  6. Isolation by stecoop · · Score: 5, Interesting

    All the money I have spent on quieting a noisy computer can be saved by accepting simple facts that moving object cause noise. Accept that and you are in the first phase on knowing what to do. You have to isolate the moving components from the room you are in.

    For me the best solution is having the cases in the desk cabinet. In the cabinet you can isolate the vibration of a blower(squirrel cage fan) and use dryer vent tubing to suck in cool air and blow out hot air from the case. The blower I got is a dismantled desktop fan from Wally World that has two squirrel cages I picked up for 10 bucks. It runs on 110v so I have to turn it on when I use it. One day I'll get fancy and have a relay to automatically turn it on and it has 3 speeds via a turn nob that I could hook up a temperature senor to automatically select the correct speed. This doesn't totally isolate the noise from the room but I can add baffling to help. And it is so cheap.

  7. Old news by Electronik · · Score: 5, Informative

    I have been modding my PC's to be quiet for years - there is no need for any computer to sound like a leaf blower. Check out Silent PC Review for more info!

    --
    -=test-sig_0.1.5(NoWhitespaceVersion)=-
  8. obligatory... by Anonymous Coward · · Score: 5, Funny

    In Soviet Russia, the COMPUTER silently air cools YOU.

  9. Re:Better yet... by over_exposed · · Score: 3, Funny

    Use a pillow - fast, free, fun!

    --
    "The object of war is not to die for your country, but to make the other bastard die for his." - Patton
  10. Wow, it's slow. by PxM · · Score: 3, Informative

    If it does stop, here is the mirrordot link.

    That said, what impresses me is that they pulled it off with an A64 3200.

    --
    Free iPod? Try a free Mac Mini
    Or a free Nintendo DS, GC, PS2, Xbox
    Wired article as proof

  11. Slashdotted by Adrilla · · Score: 5, Funny

    Seems to me that they've built a silent website too.

    --

    "Plans are for fools! Oglethorpe, the plutonian (Aqua Teen Hunger Force)
  12. I sure am. by Tackhead · · Score: 4, Funny
    > Tired of those whining fans?

    Yeah. Every freakin' day. Wake up. Kick groupie chicks out of bed. Go to Slashdot. Post something. Sign autographs. Click Reload. Select tonight's groupie chicks from my inbound mail. Recompile kernel. Refuse offer of cocaine snort from nearby pair of rackmounted systems. Touch, finger, grep, mount, fsck, reboot. No, I don't have time for your sister. Reload, and post again.

    Man, I tell ya, it's a long way to the top if you wanna rock 'n' roll.

  13. silent pc? yeah right. by sshore · · Score: 5, Insightful

    Sigh. Same old advice. Bigger heatsinks, bigger fans, slower speeds.. Each time I see an article like this, I hope that it's actually going to be about a silent PC - passive cooling, solid state storage. But no.. it's always how to make a quieter PC. Always with the same steps. It's like these sites run these articles just to sell the banner impressions. Move along. Nothing to see here.

  14. Economical - Slowing Fans by jeffkjo1 · · Score: 5, Informative

    This article talks about using a fan speed controller to slow down your fans and thus, reduce noise. I accomplished the same thing, without spending any extra money.

    I converted my fans to run on 7 volts. All you have to do is switch the order of the wires around on the molex power connector. It's really easy:
    http://www.dslwebserver.com/main/fr_index.html?/ma in/5-7-adapter.html

    I didn't experience any increase in temperature, but the noise level in my case went down specifically.

  15. Tired of those whining fans? by deuist · · Score: 5, Funny
    Tired of those whining fans?


    I sure am!

    -- Michael Jackson

  16. Re:Air cooling is fine, until.... by over_exposed · · Score: 3, Funny

    No no no, see... If you have air blowing over a hot object (a heatsink), the heat gets taken away from that object and then it rides those cirrents of air out into the cosmos, never to appear again! But if you radiate the heat away passively through a giant block of aluminum, the room gets really hot. Don't you know anything about thermodynamics?

    --
    "The object of war is not to die for your country, but to make the other bastard die for his." - Patton
  17. Some advice from someone who just did it by kneecarrot · · Score: 3, Informative
    It was time for me to upgrade my home machine a few months ago so I decided to go the extra mile and reduce the noise. It was much easier than I thought to get something far more quiet than a stock machine. The key is to carefully evaluate each component you are planning on including. Go to the manufacturers websites and look for a decibel rating. It is much easier to silence a machine if the parts you select are already some of the quietest in their class. Often, several products (for example, hard drives) in same price range will have wildly different noise ratings.

    When I first plugged in my new machine I was impressed by the sound but not blown away. A few weeks later I plugged in my old machine and my mouth literally dropped open at how loud it was.

    --

    I always save my last mod point to mod up a good troll. You people are too serious.

  18. 31.7db isn't silent by sjbe · · Score: 5, Informative

    While I'm impressed that they actually bothered to measure the sound coming from their case, their final measurement of 31.7db hardly counts as silent. In fact I personally regard that as fairly noisy, though I'm perhaps pickier than most. Realistically how much noise one can tolerate is a personal thing. If it bothers you it's too loud no matter what the acoustic measurements might tell you. And what bothers me might not bother you. I have just listened carefully to my machine and whichever component made the most noise got replaced.

    The only way to have a truly silent case is to have no fans and an idle hard drive. If that isn't possible fans like Pabst 8412 NGL are the next best thing. They don't move much air but they're very quiet. And a better solution IMO than the hard drive enclosures which drive up heat and reduce reliability is vibration isolators combined with a naturally quiet drive like Seagates. There are some fanless and semi-fanless (doesn't run unless it gets hot) power supplies out there like the SilentMaxx Semifanless. And replace those stupd 60mm fans that they insist on using for CPUs and GPUs with big headsinks and/or heatpipes. Also install neoprene or other washers and use rubber to deaden case vibrations. Home Depot is a great source for a lot of this stuff.

  19. Red October by Ibiwan · · Score: 5, Funny

    If only I could adapt the 'caterpillar' drive described in The Hunt For Red October to cool my system... totally silent, but requires a nuclear reactor for power and separate cooling for the electromagnets... (details stolen from Knick)

    --
    -- //no comment
  20. Micropolis hard drives also quiet by metamatic · · Score: 4, Funny

    Micropolis hard drives were always very quiet too--they'd go clunk and stop making even the faintest whirring noises...

    --
    GCHQ Quantum Insert installed. If only our tongues were made of glass, how much more careful we would be when we speak
  21. Doesn't take a rocket scientist... by pla · · Score: 3, Insightful
    You have two approaches to making a quiet PC - Totally passive cooling, or big fans.

    Assuming you need the second choice, you only need to know three things, in (usually) decreasing order of the amount of noise they make, to have a nearly-silent machine:

    1. 120mm fans. Use them for everything except the CPU (and for that, still get the biggest you can physically mount to the heatsink... a 90mm running at 1500RPM buried inside the case won't cause too much racket, and will move more air than a 60mm running at 4000 RPM.
    2. Hard drives make noise. Pick a quiet one. Invest in a baggie of small rubber grommets and use them on every screw you use. In fact, you might want to use them on as many screws as you can, anywhere in your computer.
    3. Computers vibrate. Put nice thick felt stick-on pads (like the ones you use to protect hardwood floors from furniture) on the bottom of your case. You can even go one further and stick your PC in a sandbox (may seem like a wierd idea, but three inches of sand will totally stop vibrations from turning your desk into a great big resonant surface)... Just make sure the sand can't get into the case.

    And for those of you who, like myself, have a machine or two loaded with cheap noisy IDE drives to use as a poor-man's fileserver... Two words: "Spare Room". You very rarely need to actually sit at a fileserver, so why not just stuff it in a room you never use? Or even a closet, but beware of dust and heat.
  22. Re:.... How? by jbarket · · Score: 3, Informative

    Silent air cooling doesn't mean the removal of fans. There are a lot of simple tricks--for example a 120mm fan at very low speeds will be extremely quiet, and may push nearly as much air as an 80mm that's going at a roaring speed.

    Of course, the simplest thing to do is buy new fans that have close to the same cfm rating while having a lower dbA rating.

    My home machine is just on the other side of silent (excluding one annoying 80mm fan that's literally custom built into the steel frame of the case at a weird angle), and I have no problems keeping my Athlon64 3000+ @ 2529 with my load temps in the mid-40s.

    If you want a really good example of this, look up the Arctic Cooler Silencer series. They do a better job of cooling the outrageously hot GPUs that are out now, and they're so quiet it's hard to tell if it's running or not.

    --

    -----
    jonathan barket
  23. Rip out the grill by ryanvm · · Score: 4, Informative
    One tip that I discovered for quieting a PSU (Power Supply Unit) fan that I *never* see anywhere is removing the grill near the fan blades. It makes a huge difference.

    In a quest to silence my P166 router, I ended up doing the following:
    • Underclock the CPU and remove the fan and heatsink and replace with a large passive heatsink.
    • Add a resistor to the PSU fan to lower the voltage and slow it down.
    • Added rubber vibration dampers to the mounting points for the PSU fan. (This was worthless.)

    During these experiments I discovered that the PSU fan was almost silent when the PSU was disassembled, but quite noisy when everything was put back together. I ended up removing the ring shaped grill on the PSU with a hacksaw and the noise is now imperceptible. Of course you have to be careful when you reach your hand around to the back of the computer or you'll get a playful little bite from the plastic blades.
    1. Re:Rip out the grill by mollog · · Score: 3, Informative

      Good ideas here, and most of them free or very cheap. I, too, remove or cut off all grills. Also, adding a plenum (spacer) between the fan and the CPU's heat sink will help. You can use an old fan as a plenum by removing the inner fan and using the outer shell to put a spacer between the fan and the heat sink.

      --
      Best regards.
  24. Silly people by nurd68 · · Score: 5, Informative

    Yes, the Barracuda's changed.

    - Seagate invented this "Fluid Dyamic Bearing" technology. As I understand it, rather than standard roller/ball bearings, an oil-like fluid is used so that the rotating shaft builds up pressure within a containing sleeve, similar to what happens with various drivetrain components in cars.

    - The Seagate Barracuda IV drives pioneered using this technology about 4 years ago.

    - Seagate licensed this technology to Maxtor.

    - Other people may use it now, not sure.

    - Just about all Seagate and Maxtor drives in the past 5 years use this technology.

    - Yes, Seagate drives are typically more expensive, but they have a reputation for extensive testing and high reliability. (I'm not saying it's accurate or inaccurate, just that this is the rep - substantiated by the fact that most non-IBM servers used Seagate drives, though this has changed in recent years.)

    - I run a mixture of Maxtor and Seagate drives, all with this technology, and have never had an issue with them.

  25. Spray Cool by mla_anderson · · Score: 5, Interesting

    Saw these guys demoing at ESC on Wednesday. It was pretty intersting. I was walking up to the AMD booth and saw a blade rack with blue LEDs and what appeared to be steam inside. That was enough to make me think, "what the hell?" Then as I walked up I could see there were three dual Athalon 64 blades in the rack, all were powered up and none had heat sinks or fans. On top of that there were nozzles spraying a fluid onto the boards and CPUs. The fluid was dripping off the boards and being collected below. They say the system can cool up to 25KW without fans or heat sinks.

    --
    Sig is on vacation
    1. Re:Spray Cool by flaming-opus · · Score: 3, Interesting

      Phase-change (spray-evaporative) cooling is the best available technology for removing heat from a very hot surface. They us it in the Cray X1 supercomputer by spray an electrically non-conducting flourocarbon onto the chip surface. The fluid evaporates and is sucked out by a high speed vacume. Flourinert is not really appropriate for home use, as it can turn into phosgene gas if heated too hot (a building fire or electrical short).

      I think spraycool and cray announced a patent cross-licensing deal a couple years ago. I'm very impressed that they are selling into the blade-server space, as it indicates that they've really brought the price down. However I don't think they are likely to be quiet. There are no fans or heat sinks on the processors, but the fluid is in a closed-loop system. Thus the heat needs to go somewhere. Probably they have one large heat exchanger per rack, which feeds into the sprayers for a dozen or more blade servers. If they're selling into the server market, quiet isn't a selling point anyway.

      Spray cooling is also used in some industrial processes, though often water is used, as electrical conduictivity isn't a real big issue. (power plants for example)

    2. Re:Spray Cool by Mattintosh · · Score: 3, Interesting

      Spray cooling is used in every refrigerant-based A/C unit ever. Compress a gas into a liquid, remove as much heat as you can, then let it evaporate and enjoy the cool breeze as it removes all the heat from the surrounding air.

      Works for water too, but not as well. It's a process called "direct expansion" (or DX, in the HVAC industry), and it has many uses. Refrigerant for cooling air, refrigerant for chilled water, and if you use chilled water, you usually heat water in a separate loop, so you need a cooling tower. A cooling tower is a big basin with a spray nozzle at the top and a drain out the bottom. Most of them have fans on them these days.

      Basically, any evaporation process is going to cool the surrounding materials. And in this case, you do sweat it.

  26. Quiet PC - Not that big a deal by JSmooth · · Score: 3, Interesting

    I finally bit the bullet and replaced my crappy Dell with a custom built AMD. I did weeks of research to make sure I got as quiet a computer as possible. After all the reading I ending up buying a antec sonata case (no extra crap, just roomy and quiet), an AMD CPU with a Zalman Copper cooler.

    I already had a 9800 radeon pro with the zalman heat sink and the sonata came with rubber mount cages for my hard drives.

    The case is NOT silent but the only sound you hear is a quiet whisper of wind. The only whine comes when A cd/dvd is burning. The Hard drives only a quiet gurgle under heavy load.

    Don't waste your time reading about this crap. Antec/Zalman/Newegg. Done.

  27. Seagate deals by NoData · · Score: 3, Informative

    Yes, Seagate drives are typically more expensive

    Outpost.com is almost perpetually running $50 rebates on all manners of Seagate drives over the past few weeks. I'm not affiliated, but I grabbed one a while back, just thought I'd pass it on.

  28. Try 0 db PC, *this* is silent by advid.net · · Score: 3, Informative
    Buy a real fanless like the one I bought ($380):

    Neo case from lex system

    I have 1GHz via proc, 3 eth, 2 usb (but usb 1.1), up to 512MB RAM, and sound.
    Storage: I've chosen a very silent hard disk: seagate momentus 40GB 2.5" and Linux is tuned to spin down the drive: it only runs 15s every 10mn.
    No CD/floppy drive: OS install with PXE and another PC on LAN.

    You can have a real 0db system with LAN boot or using a compact flash for storage.
    Of course network boot means another PC, noisy, but in another place ;-)

    Believe me, I'm currently posting on Slashdot using this system, I really apreciate deep silence.

    BTW, this is old news.