Building the Ultimate Silent PC 389
TRH writes "You had a post not long ago about building a totally quiet PC, I came across this article on Rabid Hardware where the author had another approach for quieting down a PC, through ripping out fans, motors and replacing heat sinks with sound deadener material. Funny read, especially from a site that's known in the modding world for being a little off-the-wall to begin with." Finally, the silent PC you crave, and for a change, this one won't cost you a fortune.
What? (Score:5, Funny)
Help! (Score:2, Interesting)
Re:Help! (Score:3, Informative)
Re:Help! (Score:5, Informative)
Re:Help! (Score:3, Funny)
Damn! (Score:2)
Re:Help! (Score:3, Informative)
www.e-compuvision.com [e-compuvision.com]
No problems at all, & they shipped in a couple of days.
Re:Help! (Score:3, Informative)
Here you go! [bigfootcomputers.com] Check out the Panaflo Lows and Vantec stealth fans. Overall, this place has tons of really excellent gear. These people are based in Toronto and I have ordered from them several times. Highly recommended.
My Vic-20 was silent (Score:2, Funny)
Re:My Vic-20 was silent (Score:5, Funny)
Re:My Vic-20 was silent (Score:3, Funny)
Two minutes? You never had a C64 with a floppy drive, did you?
Re:My Vic-20 was silent (Score:2)
If I could bury the NFS server underneath the floorboards I wouldn't even need ears.
Yeah, that is quiet... (Score:4, Funny)
Instructions on how to make a quieter mother-in-law? I'd really like to see that.
Anyone else have a crazy Korean mother-in-law? You know what I mean!
Re:Yeah, that is quiet... (Score:4, Funny)
sorry.
Re:Yeah, that is quiet... (Score:4, Funny)
This isn't rocket science, people.
Re:Yeah, that is quiet... (Score:2)
Re:Yeah, that is quiet... (Score:2)
I sense a "Dear Penthouse" letter coming on.
Re:Yeah, that is quiet... (Score:2)
My ex boyfriend had a computer.. (Score:3, Troll)
Also the tapping of the keys really annoyed me. So eventually I told him to sort it out or else, because I wasn't getting sleep and I was working as a receptionist at the time so needed it. He found a way to dampen the noise using some sort of cloth that was very effective, and he "lowclocked" it he said so that it didn't get as hot?
I really had to tell him to do a lot of things like that to keep noise down, it's a real shame. But now I have a computer job and I find it is really universal that they make this noise.
Anyway, I hope I didn't push him too hard. he left me, eventually, but I don't think it was over the computer. it was because he didn't like my candles (I am Catholic and Scottish).
I wish I hadn't told him to do that now, I could do with a really powerful computer for my computing course at college. It would help a lot, and I miss him.
So my point is, be careful about computer noise. it can cause a lot of tension and problems in a relationship, as I found out to my cost, beyond just headaches.
Thanks, Margot. :o)
Re:My ex boyfriend had a computer.. (Score:5, Funny)
Re:My ex boyfriend had a computer.. (Score:2)
I was doing quite well with this goal after I removed the fan from my processor heatsink (it was a P200, and seemed to not get too hot). Unfortunately I then upgraded to an Athlon (Palomino; probably the hottest chip currently sold, though not the fastest) and a fan has become necessary. A fanless power supply would be nice but I don't think they exist at the power levels today's PCs draw.
Re:My ex boyfriend had a computer.. (Score:3, Interesting)
Line the inside of its case with small passive heatsinks, and put an ultra quiet fan in its place but use a resistor to slow it down till it makes almost no noise, and it would be okay I would imagine. My powersupply barely even gets hot - So long as you arent running like your monitor from it too I reckon a fanless powersupply would be easy... I may be wrong though.
Re:My ex boyfriend had a computer.. (Score:4, Informative)
Buy an Antec TruePower power supply. It has a thermal senser and slows down the fan when it can. My friend got one and it's pretty damn silent.
Re:My ex boyfriend had a computer.. (Score:5, Funny)
First of all - with that
Second - I dont blame him for leaving if you're constantly harping on him about things like the flipping key-stroke noise that kept you from getting all the rest you needed for your oh-so-difficult receptionist job.
Third - your not used to a lot of noise because your from scotland? but now all of a sudden your OK with it all because you have a computer job? I assume you have a much larger paycheck now - so it would seem that you didnt really care about the noise, you jsut cared about the money that you weren't getting. Now that you have a job making a larger wage you can suddenly forget about the fact that you're "from a rural area in Scotland, [and] not used at all to roaring cars and noise and humming computers"
Now you miss him because you could really use his computer?
JEEEBBUUSS!!
Give me that guys email address - I would like to congradulate him for leaving you!!
Re:My ex boyfriend had a computer.. (Score:2)
Or you could try being understanding. I'm no psycologist, but it sounds to me like the noise the computer made wasn't exactly the primary issue.
Being controlling and demanding are much larger problems in relationships than computer noise.
Re:My ex boyfriend had a computer.. (Score:2)
you should do yourself a favor and wear a big sign on your forehead that says "BAD NEWS: NARROW-MINDED AND HIGH-STRUNG." That way, other people won't waste your valuable time by trying to have meaningful relationships with you.
Re:My ex boyfriend had a computer.. (Score:5, Funny)
My ex-girlfriend had a computer (Score:2, Funny)
I wasn't dating her for her brains.
Re:My ex boyfriend had a computer.. (Score:5, Funny)
I know a couple who are Irish. He's prodestant, she's catholic. Whenever they argue, she blows up his car.
Anything like that?
Re:My ex boyfriend had a computer.. (Score:2)
Oh, well that makes sense.
Re:My ex boyfriend had a computer.. (Score:2)
Re:My ex boyfriend had a computer.. (Score:2)
It wasn't the Catholic trolling so much as the ending of a statement with a question mark. That did it for me...
-B
Silent PC (Score:5, Funny)
Other Hot News on Slashdot: (Score:4, Funny)
10/21/2002: Netscape innaugurates Mozilla open source project!
10/20/2002: Windows NT 4.0 released!
10/19/2002: DEC changes name to Digital, and/or vice versa!
10/18/2002: Altair home computer released!
10/17/2002: New "Multics" project aims to revolutionize operating systems!
10/16/2002: New "high level" programming language Fortran promises to revolutionize number-crunching!
10/15/2002: This just in: Renowned mathematician Alan Turing found dead!
10/14/2002: HITLER INVADES CZECHOSLOVAKIA!
10/13/2002: Council of Trent adjourns!
10/12/2002: EMPEROR DIOCLETIAN ACCEDES TO THRONE!
10/11/2002: Orgmph discover fire! Fire good! Cook meat!
Re:Other Hot News on Slashdot: (Score:2)
Great. Now we're going to have to invoke Godwin's Law on this thread too.
Re:Other Hot News on Slashdot: (Score:2, Funny)
FIRE BAD! BEER GOOD!
The quietest pc. (Score:5, Funny)
i'd miss the white noise... (Score:2)
Re:i'd miss the white noise... (Score:2)
Re:i'd miss the white noise... (Score:2)
plus the little filters in the front of my case strain all kinds of garbage out of the air.
through ripping out fans, motors (Score:3, Funny)
UH-oh. (Score:2, Funny)
"Hey! I removed the CPU fan and the HD motor, but my computer just makes a sizzling noise. Maybe I need to take out the power fan too..."
Good ol' slashdot.
Ionic Breeze (Score:3, Interesting)
Re:Ionic Breeze (Score:2)
Apparently they don't have a very strong airflow, though, which rules out using them for most modern PCs.
Also, I imagine the shielding to protect the PC from the electrical field would make them pretty bulky as fan replacements.
That was fast (Score:3, Funny)
Re:That was fast (Score:3, Funny)
then about 2 minutes in it goes something like
NYEEEEEEEEEEEAAAAAAAAAAAARRRRR BOOOOOOOOOOOOOOOOMMMMMMMMMMMMMMM.
Some standard mourning music over the dead server, Then that anime song they play when a character comes back to life.
Then, At the last moment, another huge explosion. Timothy most of posted the story again..
quite happy with the noise (Score:2)
Back when I lived on campus I slept in the same room as my computer, and it stayed on 24/7 (helping to keep my room toasty in the winter, among other things). Eventually, after a long day of hardware troubles and case dissassembly, I was too tired to put everything back together and left the computer off for the night.
Alas, I couldn't sleep! The white noise that had masked the gurgles of the plumbing, the neighbor's TV, and the cars outside was suddenly gone. So, personally, I'd rather save the cash that could go towards hushing my case and enjoy just it's soothing hum.
Re:quite happy with the noise (Score:2)
Everytime someone mentions this, I can't help but think of their poor cpu's stuck inside a stationary clothes dryer. It's cruel, unusual and easily remedied I tell you!
Re:quite happy with the noise (Score:2)
no matter how close to ambient you are keeping those pc parts they're still going to produce the _same_ amount of heat that will eventually get transferred to the air in the room.
it doesnt matter if you have huge airflow vs. almost no airflow inside the case. if you have little airflow, sure the air feels warmer, but there's less of it, with more airflow it might not feel as warm to your hand but it's still moving the same amount of heat from your computer in the long run.(unless there's a spot in your computer that gets heaten up to gazilion degrees after being on for couple of days).
your computer that has those extra casefans is going to heat up your room even more since those casefans heat up too(not too much but still)..
heat meant as thermal energy
Re:quite happy with the noise (Score:2)
The only TRULY slient PC is... (Score:2)
-OR-
The one that was stolen, a la the fax machine from "Office Space"
-OR-
The one that was stolen from you.
Why bother... (Score:5, Interesting)
Re:Why bother... (Score:2)
Hmm, yeah, silent! (Score:2)
Hmmm.... No fans and slashdotted? (Score:3, Funny)
Story summary (Score:5, Insightful)
2. Put some sound dampening dynamat over fan and heat sink holes
3. Put back together
4. Turn on... wait a few seconds
5. Extinguish flames
6. Go to store.apple.com and buy a Mac
Re:Story summary (Score:2, Informative)
But what is really silent is my PDA. The only problem is its lack of memory :)
Re:Story summary (Score:3, Funny)
7. Profit !!!!
Re:Story summary (Score:2)
7. Get in car
8. Drive to apple store and buy a mac
How's that?
Dynamat is too expensive (Score:5, Informative)
I'm not affiliated with them, I just hate seeing people spend a ton of money on something that has an equal quality, lesser-priced alternative.
Re:Dynamat is too expensive (Score:2)
Power Supply (Score:3, Interesting)
Re:Power Supply (Score:3, Informative)
Don't worry about the shielding. It's DC. As for the voltage drop, let's figure it out using some basic assumptions: your power supply has 18AWG wires, your motherboard is most sensitive to 5v sag, you have 1 foot cables currently, and that you are currently drawing 100 watts on the 5v line across 6 of these 18awg wires.
Ohm's law says that a load drawing 100 watts at 5 volts is .05 ohms. 18awg wire is .00751 ohms per foot, divided by six wires is .00125 ohms per foot. Round trip for your existing power supply is .0025 ohms, or 4.7% of your total load resistance. Therefore your voltage drop is .238 volts.
Extended to 40 feet of cable round trip, we've got .05 ohms of resistance. Which is the same as your load. Which means half the voltage gets used up in the motherboard, half gets used up in the wire. Unacceptable.
Same numbers with a single run of 4-gauge wire: .000292 ohms per foot, 40 feet, .012 ohms, .012+.050=.062, 5*(.050/.062)=4.03v. Still unacceptable.
You'll want to run your own numbers to make sure, but it looks like you'll need stupid amounts of copper for this.
mini-itx (Score:3, Interesting)
Check out mini-itx.com [mini-itx.com] the boards are low heat, low noise and fairly powerful (500-700 mhz). They are perfectly suitable for a media box, router, or low end linux/windows workstation. All parts included they whole things comes in at under $500 usd. That's pretty reasonable, and the site has a greate many interesting links about projects (like the one I think is cool, the computer in a cigar-box, the 'Hummidor64').
Mirror (Score:3, Informative)
Yet another /.'ing. Mirrors up at Earlham College [earlham.edu] and at UW-Madison [wisc.edu].
Be warned that I am planning on taking down the UW-Madison server for repairs and upgrades later tonight, so Earlham is probably your best bet.
I found it... (Score:3, Funny)
Erik
Time to CLEAN THE FANS (Score:2)
guessing that if I took the time to shut them down and give the fans a good cleaning, it would
cut the noise out by half or more.
It's cheaper than a new super quiet power supply too
Re:Time to CLEAN THE FANS (Score:3, Interesting)
im running dynamat (Score:2)
Done before (Score:3, Informative)
However, it did remind me of a british Company that used to make PC's back in the early eighties, I can't quite remmember their name.
They put the power supply in the monitor, which has enough fanless vantilation, and thus did not need the power fan in the main case. The CPU's of those days did not require fans so it was a completely quiet setting.
However, one of the first FUD rumours was spread that this was somehow wrong, so they put a useless fan circulating air inside the main case to make noise. Those who had a clue, ripped off the power supply of that fan.
Anyhow, wouldn't it be possible to just put the power supply in the monitor or such, and thus eliminate the main source of noise (the big power fan)?
Too complicated (Score:3, Funny)
Re:Hard Drive the only loud thing? (Score:3, Funny)
Re:Hard Drive the only loud thing? (Score:4, Informative)
Actually, it's more about sound level variations
I sleep about 1 meter from my home server. Every time the general level of sound changes sharply (even if at low volume), I wake up. Momentarily. Let me tell you, 10+ "Micro-wakenings" per night will do you no good!
Possible fix: REMOVE all ability to vary fan speed! And to park disks! And perhaps even to slow processor.
Re:Hard Drive the only loud thing? (Score:2, Insightful)
Possible fix: REMOVE all ability to vary fan speed! And to park disks! And perhaps even to slow processor.
or.... Don't sleep 1 meter from your server!
Re:Hard Drive the only loud thing? (Score:3, Funny)
It is clear that this can only be good for open source.
Re:This could be very interesting for musicians (Score:5, Informative)
It's a joke, and should have been posted in the humor section.
An excerpt:
"CD-ROMs are relatively easy to secure. Once we remove the motors (3! Tray, spinny motor and the wee one that moves the optics back and forth), the rest is child's play. I doubt this Lite-On drive will make much electronic vibration afterwards, but I'm also removing any chips that have the potential to create noise, just to be safe."
Re:This could be very interesting for musicians (Score:5, Informative)
Not true! This is valid information on how to improve your computer!
For other great advice, check out Datadocktorn [datadocktorn.nu] (approx. "The Computer Docktor"). They have great guides on how to make your computer plenty better. Especially check out the disk defraggle [datadocktorn.nu] section. The minimizing tutorial [datadocktorn.nu] is also very helpful. I never realized that I cut just saw off those wasteful parts of my motherboard and fit the whole thing in a much smaller case!
Re:This could be very interesting for musicians (Score:2)
Re:This could be very interesting for musicians (Score:3, Funny)
Then you start recording, you can't get a good take because its 90 degrees, this is california and its sweltering inside cuz you had to turn off the AC, you're sweating and out of breath ... on the 25th take you remember those albums you played on in highschool and the freezing studio you recorded in ... god what you would give ... on the 30th take you squeak out something you can live with, you can fix the nasty bits in auto-tune right? :)
It's not glorious, but its all worth in when the track comes together :)
Re:This could be very interesting for musicians (Score:3, Funny)
Who are you, John Cage? [bbc.co.uk]
Re:This could be very interesting for musicians (Score:2)
Nope, I'm an independant artist. My silence has soul, heart, and is in touch in a way that can't be captured by corporate sellout silence :D
THE ARTICLE IS A JOKE. (Score:5, Informative)
Did you even read the article? It's a joke:
"I cut a piece of Dynamat the size of the CPU, and stuck it on the CPU. Not only can dynamat run at peak performance without any fan whatsoever, but also it insulates to prevent nasty CPU vibration."
And if you weren't sharp enough to catch that, it says "humour" in the fscking URL, for christ's sake.
THANKS FOR YELLING (Score:2)
(I sincerely apologise for this crap below. The joke simply doesn't work if I don't type it in all caps)
Avoiding lameness filter
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Re:This could be very interesting for musicians (Score:3, Interesting)
Take a simple recording app like cool edit pro.
before your recording session record 1 second of silence (you not talking,singing,farting,playing,etc...) then save that, then record your track... then simply subtract the 1 second sample from the rest of the track with the filter tool and it sounds like you recorded in a closet full of coats. (except for any room reverb.. no fan/pc/ambient room noise.)
Hell I even set the furnace in the house to run the fan all the time during recording so that It doesnt cycle on/off during the track...that way I can easily remove it's noise.
Re:This could be very interesting for musicians (Score:3, Informative)
before your recording session record 1 second of silence (you not talking,singing,farting,playing,etc...) then save that, then record your track... then simply subtract the 1 second sample from the rest of the track with the filter tool and it sounds like you recorded in a closet full of coats. (except for any room reverb.. no fan/pc/ambient room noise.)
While noise reduction filters are a useful tool for cleaning up audio, it is a really bad idea to depend on using them for entire recordings on a regular basis.
Basically what you're doing is FFT'ing out those frequencies wherever they exist. So even though you're getting rid of the noise, the effect is still like running a bunch of parametric EQs over the parts you *do* like.
That's the reason that studios still pay for soundproofing instead of just using an FFT filter plugin and doing what you suggest.
Re:This could be very interesting for MODERATORS!! (Score:2)
This is not the solution that many musicians have been waiting for, this is the solution the RIAA has been waiting for.
You do all these things to your computer and the RIAA won't have to worry about independent musicians anymore, because your computer will go *p00f!
(If this is a troll, it is Physics Genius level troll. :)
Re:Need a Silent Pc (Score:2)
Re:Dynamat doesn't work. (Score:3, Informative)
Re:Dynamat doesn't work. (Score:5, Funny)
What you must realize, though, is that Dynamat is not designed to reduce noise. It is designed, like so many other car audio products, to separate fools from their money.
Re:Dynamat doesn't work. (Score:3, Funny)
only serious and real car stero installs use dynamat... and they still do to this day. it's a staple in any car audio system that is designed to sound awesome.. want yours to sound better? add dynamat and it will reduce panel vibration and increase SPL. (Show me one SPL winner that doesnt have Dynamat in his car.)
Re:PLEASE don't take this seriously! (Score:5, Insightful)
Re:PLEASE don't take this seriously! (Score:3, Funny)
Re:PLEASE don't take this seriously! (Score:3, Funny)
Re:PLEASE don't take this seriously! (Score:3, Insightful)
+5 Insightful??? (Score:2)
Re:My idea for a quiet PC... (Score:2)
Re:My idea for a quiet PC... (Score:2)
He did that. He also removed all motors, chips and heatsinks. He sealed vast portions of the system under thick rubber-plastic. He used powertools like a carpendry jigsaw to rip apart the powersupply, and then sealed the whole unit into a single block.
It was a joke. I didn't get to the end of the article, but I'm curious if it had enough complete circuts to have power go through it so it could catch fire.
--
Evan
Well you can do THIS: (Score:4, Informative)
-------
How To Silence A Computer
By Michael Farnsworth - Copyright 2002
The contents of this article may not be reproduced either in whole or in part without express written permission from the author.
The author can be contacted by email: Michael@quietpcusa.com
Silent computers are better than noisy computers, provided you go about obtaining one with a little research, planning, and then carefully deploying the silencing methods you have decided on. If you inadvertently create a machine that overheats in your quest for silence you will not be a happy camper due to crashes or even component failure and possible destruction. Noise is not only a distraction, but it is literally unhealthy to work or even play around. It is my intention to help you figure out the sources of noise generated by your PC and then to develop a strategy to safely eliminate as many of them as practical for your individual hardware configuration. If you are planning on building or buying a new PC, this article intended to help you plan for a better, happier, and more productive future through silence.
In the early days of computers, circa the introduction of the PC in the early 80's, I suspect engineers allowed computers to make a little noise to comfort users, an acoustic way of letting them know they were actually working with a 'mechanical machine' that was really 'on and doing something'. Back then, a PC power supply was only required to put out 35 watts or so and hard drives were only 20 MB on average. Sound cards capable of 16-bit quality were a dream for another ten-or-so years. Now, it's not uncommon for a PC to have multiple large-capacity hard drives, one or two CD-ROM/CD-R/CD-RW/DVD units, at least one sound card, a video card (which alone often has more memory than a whole high-powered computer of ten years ago), loads of RAM, possibly a network card, and gosh knows what else. The latest power supplies are up to 400 watts and more. PC cases now commonly have several cooling fans, some even come with as many as 5 or more cooling fans as stock items. By the time you add up all of the watts generated inside your PC, you can see that proper cooling becomes a serious concern, not only to avoid component failure but also to avoid crashes and possibly even extend component life beyond what it might have been prior to your improvements.
Watts represent heat and heat requires dissipation and cooling for operational stability. We'll look at each area of heat generation to find most of the areas of noise generation. We'll also look at dealing with the remaining areas of unwanted noise propagation that can be dealt with the way all sound environments should be approached, acoustically.
Power Supplies
All computers need them and a poorly designed power supply is generally one of the worst offenders that generate needless noise in a PC. Usually, the fan is the main culprit closely followed by shoddy air-flow design. The less-expensive fans often have poorly designed blade configurations that cause the air to oscillate at audible frequencies as it is pulled through the fan housing. The lower-quality fans also tend to have inexpensive bearings that are noisy. The better (and sometimes a bit more expensive) fans usually have ball-bearings or special noiseless sleeve bearings designed to rotate at high RPM's with little friction, plus deploy better and more efficient blade design to reduce audible oscillation. The physical location of the components inside the power supply can also make a difference in generated noise levels, as needless oscillations can be created as the cooling air is forced past them as it is pulled by the fan. The size and shape of the chassis holes in the power supply's case can also create an adverse effect. Some sizes and shapes of holes will cause a more audible 'siren effect' to be produced as air is forced through the openings. Some power supply fans run at higher speeds than they actually need to simply to compensate for other design weaknesses such as inadequate blade design. Older and usually also cheaper power supply fans run at one speed all the time. Better power supplies have temperature-sensing circuits built in so the fan only rotates as quickly as it needs to for proper cooling to be maintained. There are off-the-shelf power supplies now available that are literally inaudible when you are standing right next to them as they are running (which can have outputs well in excess of 260 watts). A word of caution: don't try to change a power supply fan yourself unless you are a qualified technician. Power supply capacitors can retain a potentially lethal shock, even when unplugged.
There are more elaborate ways of silencing a power supply, such as water or oil cooling but I won't go into here due to the generally impractical nature of deploying such methods in the average sound production/playback environment. (If you really want to take a water-cooled PC with you on the road, that's up to you. I'm still not convinced that water and computers go together in high-reliability situations.)
CPU Coolers
CPU cooling systems are often the second loudest offender. Many of the older CPU cooling systems consisted of heatsinks with a relatively small surface area coupled with a high-speed fan designed to move the maximum amount of air possible over the small surface area. Newer and more efficient CPU cooling systems often use copper instead of aluminum for the core of the cooler because copper is up to 92% more efficient at transferring heat than aluminum. The better heatsinks have more elaborate designs that allow for a much larger surface-to-air ratio of copper or aluminum fins. The increased heat transfer efficiency and larger surface area coupled with a larger fan means that the fan can rotate at a lower RPM rate, eliminating much of the high-pitched whine often associated with high-powered PC's. Some heatsink/fan designs don't even have the two components directly coupled, the fan may be much larger than those traditionally used and suspended over the CPU heatsink by a special frame which is connected to the main PC chassis. The newer, high-powered CPU's that are being released this year generally have an improved physical architecture with much smaller internal busses which will generate far less heat. VIA even has a 'fanless' CPU, although this particular CPU isn't recommended for audio production due to its math processing capabilities which are less powerful than the better-known CPU manufacturers products. (It's fine for word-processing or general office duty, however.)
Hard Drives
One of the most painful experiences I ever had in an audio career that spans 20+ years was editing on my first digital audio workstation which had a Seagate Barracuda II SCSI hard drive. It was almost impossible to work with due to the whine of the drive. Fortunately for the world of audio, Seagate figured out that this was a problem and their new ATA 100 Barracuda IV is almost silent right out of the box, largely due to their new bearing design. These drives are very common now in audio workstations due to this highly desirable characteristic. In the older PC's, SCSI drives were a requirement for multi-track work due to their ability to read and write simultaneously. The newer PC's are so fast that this is no longer as much of a concern and many of the ATA 100 and ATA 133 drives are adequate for many audio workstation applications. If you have a need for a noisier drive or unhappily own an older, noisy drive you can either mount it in a special audio baffle unit that is then mounted in a spare 5-1/4" drive bay or build a baffle around the area where the drive is mounted with special sheets of acoustic materials designed for this purpose. Just make sure you don't exceed the maximum allowable wattage to build up inside the baffled areas or you'll cook your drive. It's important to remember that heat builds up quickly in an enclosed space, so you need a good heat transfer method to get the heat out of the case and into the air where it can be dissipated. The enclosure method is generally only useful for 5,400 RPM and most 7,200 RPM drives, please be sure to check the drive manufacturers specifications for heat before you decide how to go about solving your problem. The higher-speed 10,000+ RPM drives can be very annoying to work around and more difficult to silence. You may not need a drive that fast to perform all of the tasks you have in mind. It may be better to buy a slower drive if it lets you hear what you want to. Ever been on a long trip while sitting next to a whiner? You get the idea.
Case Fans
Case fans come in a variety of sizes and RPM speeds. The noise generating characteristics of case fans, CPU fans, motherboard and video card cooling fans all share the same design considerations described above in the Power Supply section of this article. Basically, you generally get what you pay for when it comes to case fans. Bearings, rotation speed, and blade design are the most important considerations when choosing case fans. Nowadays, most case fans have noise specifications in db (decibels) included in their spec sheet. Try to use only as many case fans as you have to. Two other useful methods of decreasing case fan noise are:
1. Mount the case fan with some sort of vibration isolation. Even rubber grommets placed over the mounting bolts and placed between the frame of the fan and the surface the fan is mounted to will help reduce transference of vibrations to areas of the case that can resonate sympathetically and acoustically amplify the fan noise. You could also cut our own gaskets out of commercially available sound dampening materials and place them between the fan and mounting area. In addition, there are also special vibration-dampening washers and sheets you can cut your own gaskets from available for this purpose. I suggest starting with rubber grommets though, because they are readily available and inexpensive, before moving on to more elaborate techniques.
2. It is also important to be aware of a potential 'siren effect' when you mount a case fan. If you have an area on your case designated for fan mounting that has a network of louvers or holes that cause an audible siren effect, you may want to consider getting out your high-speed rotary tool (such as a Dremmel tool) and cutting away the area with the holes/louvers to allow the air to pass directly through the fan with as little resistance in the path of the air flow as practical and possible. Be sure not to cut away too much area around the mounting holes to ensure structural integrity is maintained. Bear in mind that you want protection from anything accidentally touching the fan such as an internal wire or perhaps someone's finger from outside the case. Acoustic absorbing materials can be placed around the airflow path inside the case to absorb noise too; just be careful not to impede the airflow itself or you'll defeat the purpose of the fan.
Standard 80 mm case fans usually come in one or two wiring configurations and each has its own type of connector. A four-pin connector of the type that would supply power to a CD ROM or hard disk drive is designed to deliver twelve volts DC to the fan. It doesn't accommodate speed control. The three-pin (or 'three wire' model, if you buy your fans without attached connectors) type of fan is designed to allow feedback from the fan to monitor its speed so the user can see the fan speed or an alarm can sound in the event of a fan failure.
Inexpensive fan speed controls are also available for the three-pin type of fan. If your three-pin fan speed isn't controlled by the motherboard, these devices can allow you to govern the fan speed at lower RPM so you can have it run only as fast as you think it needs to. This can drop unwanted noise levels quite a bit.
Fan air throughput is stated on the specification sheet in 'CFM', or cubic-feet-per-minute. This figure represents how much air the fan can pull through itself when completely un-impeded by other structural objects such as case holes or louvers.
Cases
Aluminum cases are generally better at dissipating internal heat buildup than steel due to aluminum's characteristic of transferring heat more quickly. Aluminum heats up faster by absorbing internal heat and then transfers the heat to the air outside the case more efficiently than steel or plastic. Some aluminum cases are advertised to run 10 degrees (Fahrenheit) cooler than similar steel cases. (Most cases come with noisy fans however, so quite often you will have to replace the stock fans with a more silent model.) Cases can be purchased without power supplies so it's usually a good idea to order the case without a power supply (or remove the offending power supply if you already have the case) and then purchase a silent (or at least as quiet as can be for your intended load) power supply separately. Installing a power supply takes about 5-10 minutes in most cases (pardon the pun). There are slowly coming into the market special cases with quiet power supplies and acoustic materials pre-installed but I haven't seen any particular model of case yet that provides all of the best solutions available. It seems at the time of this writing that cases are generally designed to run cooler or quieter, but not both at the same time.
Some cases have better airflow design than others. This is a very important consideration when choosing your PC's case. Some people like to leave the side of their PC off, thinking it will get more cool air to the components. This isn't always true, however. Many cases need to be fully assembled for the air convention and flow design parameters to work effectively, keeping the internal components properly cooled.
Cases with only one fan usually have the fan oriented in such a way that it will pull air in to the computer. This system relies on the fact that most power supplies pull air out of the computer case. Most single-fan cases have the fan located at the bottom of the computer, often at the front of the case if the PC is a 'tower'-style case. Since hot air rises, the idea is that natural heat convection plus the cool air being forced in by the fan at the bottom will create airflow up to the top of the computer (in towers, anyway) and the power supply fan will pull the heated air out of the case to dissipate it.
Desktop PC's usually have all of their fans located at the back of the case, while rack-mount systems may deploy a variety of different cooling/airflow designs such as having fans pulling cool air in through the front and auxiliary fans simultaneously, forcing heated air out of the back or sides of the case. Some rack-mount cases have ventilation on the top and/or bottom of the case but this doesn't seem like a profoundly good thing to rely on, since those vents may be blocked by other components in the rack where the system is mounted or by the top and/or bottom of the installation rack itself (unless the rack where the case is installed has addition room for airflow and possibly addition fans installed in the rack itself).
Cases with multiple fans installed may have different airflow design parameters, so it's good to try and figure out the intended airflow in your situation so you can minimize the required number of fans. When trying to evaluate specific cases you may want to consider getting a full-sized tower instead of a mid-sized or small tower even if you don't need the extra space for all of your components. The larger the internal space, the less air is required to be forced through the system per minute and the less airflow required, the less noise your fans will generate.
Acoustic Absorbent and Dampening Materials
There are now coming onto the market a variety of sound dampening and sound absorbing after-market kits that you can install yourself. These kits are usually a better buy than purchasing a case with the materials pre-installed because you can customize the installation to your specific hardware configuration and create a more efficient solution. Some of these kits are much better at comprehensively dealing with all of the noise problems than others. The kits that contain only one type of sound-absorbing foam aren't nearly as effective as more comprehensive kits that contain at least one type of foam to absorb noise acoustically plus some form of sound dampening material to inhibit mechanical transmission and amplification of noise caused by sympathetic vibration, usually on the sheet metal side-panels of the case. The case side-panels are sometimes perfectly suited to being natural amplifiers!
Try to think 'efficient air flow' and 'convection is good' when you decide where to install your internal components. If you can leave some air space between your multiple hard drives, then do so.
Accessories for Heat Control
Motherboard (Northbridge) Heatsinks, Video Card Heatsinks, Memory Heatsink Spreaders, and Round Cables are Good! Additional heatsinks such as these can help to pull concentrated heat in to areas where the heat buildup can be more efficiently dealt with by the fans and prevent crashes as well as extend component life. The new 'round' data cables that are now available can greatly improve airflow in a computer, helping to prevent pockets of hot air from building up in closed areas that the older, flat data cables tended to create. The new 'heat pipe' technologies seem very promising as far as presenting new methods to quietly move heat from problem areas to areas where it can be dissipated efficiently.
Installation Considerations
If it's not in a rack, put it on a carpet or some other soft surface to avoid mechanical sound transfer into the floor or whatever it's sitting on. Place the computer as far as possible from any reflective surfaces and consider putting soft carpet or some type of acoustic energy absorbing material on any surrounding surfaces to prevent unwanted sound reflections.
The final and surest way to silence a PC is to simply turn it off. It is important that this be done occasionally. A recommended follow-up procedure is to go outside into an area filled with nature's serene beauty and soundscape or, if it's night-time, possibly a friendly tavern that serves up a good pint, but only if it has good music
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Re:Well you can do THIS: (Score:2)
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Did you get permission to post this?
Did anyone else find this funny? (Score:2)
The intro to the article, including this (my emphasis):
followed by the ENTIRE text of the article.This is how things like this [slashdot.org] happen. People that either don't read the legal stuff, or just don't care.