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Author Topic: Free power but need low sound and low heat.  (Read 2742 times)
btc_artist
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November 17, 2011, 07:36:50 AM
 #21

Let us know how it goes.

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November 17, 2011, 07:55:08 AM
 #22

Just run only  two (if needed, underclocked  and undervolted) cards per case during the day, and run them all full blast past office hours.
its not hard to have a few cards run virtually silent if you compromise on density. Both of my machines are whisper quiet and my GPUs are all well below 60C. All you need is something like twin frozr cards or good after market coolers in a case thats reasonably well ventilated with lots of silent fans. With only 2 or so cards per rig, thats easy. Any half decent gaming case will do (I have an antec 300, its dirt cheap and plenty good for 2 cards).  Its not very power efficient, but you wouldnt care.

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November 20, 2011, 09:33:13 PM
 #23

I have the idea of having this water cooled to keep down the sound. However my first thought is if I run it 24/7 I am just going to be pushing around boiling water. Does anyone have much experience in this? How silent could I make this? Thank you

Water in cooling loop won't ever get more than 50C or so.  The larger the radiator the lower speed fans you can use to acheive same temp.  So can't say how silent until you decide what cards (how much thermal load), and what size radiator. 

I run 3x5970 and i5-2500K at <45C and using 4x120mm it is essentially inaudible.
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December 02, 2011, 06:38:30 AM
 #24


I have 2 rigs running in my office. The specs are as follows:

Rig 1: 4x 5850
Rig 2: 2x 5870, 1x 5850
I have 1 desktop fan blowing on both.

I have 1x extenders and cable ties (zip ties) to space out the cards, it depends on your case.

The 2 5870 have aftermarket HSF on them.

They are quiet, but there's heat and you cannot put it under your desk if you want kids in the future (might be as bad as putting a hot laptop on your lap).  ps. I'm not a doctor, but it's up to you.

So how to keep them quiet?
Set them up and don't start mining yet. Try out different levels of the fans on the GPU and once you have decided on a noise level you can accept (I have the sapphire non-ref at 65%, ref at 35%), lock in the fans at that speed. To do that I use cgminer as the mining software with the "--auto-fan --gpu-fan 65" parameter.

I've also setup cgminer with "--auto-gpu" to set the gpu to be down clocked if the temps get too high. I set the range to 500-880mhz. The reference card I have will run at a lower speed, but everything is stable.

I do not keep the air-conditioning on over-night. This will drive up the power bills significantly, so at night, the gpus automatically downclock to about 600mhz. During office hours when the air-conditioning is on, cgminer push them back to 750-880mhz (different for each card, as the card at the end runs cooler).

This is how they look:



Hope this helps.

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December 02, 2011, 01:59:48 PM
 #25


Just saw your TyGrr setup photos. I think you should be able to do this easily.

I understand the flood in Thailand is subsiding. Hope it did not affect you much.

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