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No fans! I want NO fans!! Trying to go dead silent - Page 17  

post #161 of 196
Quote:
Originally Posted by caenlen View Post

a super loud rig, but have it the next room over, and a tiny hole drilled in the wallfor your dvi cable/mouse/keyboard/speakers to come to the room you will actually be in, seal it off with foam once wires are run through

Please read up, this has been suggested A LOT.

Quote:
Originally Posted by PhotonFanatic View Post

I see a lot of people posting in this thread, about solutions to making water cooling quiet INSIDE the PC case. I've got no problem at all having the whole thing outside the case. I'm a noise level freak, so if I ever water cool I'm going to have one of those huge radiators anyway. That's not going to fit inside. Anyone else here not care about having all those water cooling guts hanging out the back of the computer? Mounted securely, of course. It just seems so much more practical, and really who is going to see that stuff anyway. Most of us would do it in a way, that you couldn't really see much of the water cooling apparatus. There seems to be a bit of an obsession, with stuffing it all inside the case.

If you don't mind the mess, you can get radiators that are designed to be passive. This, combined with full board liquid cooling would mean that you don't need fans at all.
Watch out for the AlphaCool ones on FrozenCPU, only one of them has reviews, and they're not very flattering.
Of course, then you need some powerful pumps to move a lot of water through a lot of radiator, because these passive rads are HUGE.
Possibly 2 or 3 pumps in series, all set to a very low speed? I'm not too big into liquid cooling, and noise level isn't important to me as long as it's <30dB, so I'm not the best one here for advice on quiet pumps. Careful of the fanboys...

With all that said, make absolutely sure that the mobo block you use cools ALL of the heat generating parts of the board. There are a few sneaky spots that don't make much heat, but it gets bad with no airflow.

Also, the obsession with cramming the cooling system in the case is to do with looks and portability. You'd be surprised at how many people need to have a portable system for LAN parties, and, of course, such events are easily 80% showing off PCs...
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post #162 of 196
Don't know if this has already been mentioned, but this thread popped up here on OCN today that might be of interest ...

SPCR silent watercooling article
http://www.overclock.net/t/1536131/spcr-silent-watercooling-article/
Quote:
Originally Posted by Hasdrubal View Post

Hi all,

Silent PC Review had a first go at a silent watercooled computer, you can read the full article using the link (http://www.silentpcreview.com/article1437-page1.html)

All in all very interesting, and confirming that, with extra care, a watercooling setup can be near-silent even. A good read as well for beginners since this was their first watercooling project.
post #163 of 196
Quote:
Originally Posted by Unicr0nhunter View Post

Don't know if this has already been mentioned, but this thread popped up here on OCN today that might be of interest ...

SPCR silent watercooling article
http://www.overclock.net/t/1536131/spcr-silent-watercooling-article/

Prepare to laugh at the article, they tested the sound of the pumps DRY.
They ran water pumps, at full speed, with no water in them.
Somebody forgot their research...
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post #164 of 196
Quote:
Originally Posted by plottingCreeper View Post

Quote:
Originally Posted by Unicr0nhunter View Post

Don't know if this has already been mentioned, but this thread popped up here on OCN today that might be of interest ...

SPCR silent watercooling article
http://www.overclock.net/t/1536131/spcr-silent-watercooling-article/

Prepare to laugh at the article, they tested the sound of the pumps DRY.
They ran water pumps, at full speed, with no water in them.
Somebody forgot their research...

Wait! What?
Quote:
The acoustics were not good. As we noted many times in the past, water pumps for PC component cooling have a considerably worse acoustic signature than typical DC axial fans used in computers. High tonality, especially in the upper registers of the audio spectrum, combined with high vibration makes the VisionTek EK EK-SBAY DDC 3.2 PWM reservoir-pump a very difficult component to use in a quiet PC. Even at the slowest setting, it sounds reminiscent of a fan with ball bearings about to fail — there's a screechy quality that pervades, albeit at much lower SPL (sound pressure level) than at higher speeds. We could use the elastic suspension mechanical decoupling method that has served so well for HDD vibration damping for years, but the screechy quality was so prevalent that even the damping afforded by being wrapped in my hands did not change it. The absence of liquid in the reservoir and pump may have exacerbated the noise, as water has acoustic damping properties, but we were doubtful that it would have more than a marginal effect.

Wait! What?
post #165 of 196
Quote:
Originally Posted by Unicr0nhunter View Post

Wait! What?
Wait! What?

Oh dear... that's terrible.
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post #166 of 196
The postscript addresses this. Pretty impressed they managed 18db - hopefully they'll do more tests on those pumps.
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post #167 of 196
Quote:
Originally Posted by claes View Post

The postscript addresses this. Pretty impressed they managed 18db - hopefully they'll do more tests on those pumps.

I'm only on page 7 so far. Don't have the attention span to sit down and read a 10 page article in one go, but that's something that they REALLY should have gotten right, from the very start.
SilentPCReview is a very well respected site, so I hope that there's nobody using this as a step by step guide...
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post #168 of 196
Thread Starter 
Well, something bad happened. I got one of the 140mm cougars in, and it seems to be stuck on the higher of its two speeds. Its louder than the fan that it replaced! Its the one that comes with a "flexible 2 speed design". So clearly its stuck on the faster speed. The box had no instructions on how to switch the fan over to the slower setting. If you want the fan to be silent, and only have a noise output of 16Db, then you've got to run it on the slower speed of 800rpm. It seems its stuck on the 1200rpm. Does anyone know how to turn it down?
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post #169 of 196
"flexible 2 speed design"?! LOL marketing at it's finest. generally on multispeed 2 wire fans there is a switch somewhere. If it's a 3 wire fan it SHOULD be variable speed. If they somehow cheaped out on the thing to make a 3 wire into a 2 speed it goes into the "do not buy this ever" pile.

any correctly made fan can change it's speed by altering the voltage. If you cant do it with your motherboard, or internally to the fan, you can end run it by throwing in a voltage reducer.
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post #170 of 196
Thread Starter 
Well I got lucky. I was messing around with it, and apparently you have to use their little adapter if you want to run at the lower speed. Looked it up and yup, internetz says the adapter reduces the speed. Its quiet now. But man, DO NOT run these things at 1200rpm. Its dead quiet at 800, and too damn loud at 1200.

Are there any fans that are dead quiet at 1200 RPM? Let me guess, the noctuas.
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