Another method to quieten things down is to remove all fans from the cases
and Use Gigabytes of RAM in each machine so HDDs can be put to sleep then do
one of the following....
OPTION 1:
Place all PCs in a sealed container and fill with CFC - NOT Green or Legal!!
OPTION 2:
Use External Blowers (and Filters) and Duct Cooling into the PC cases.
OPTION 3:
Use Liquid Nitrogen Cooling systems for PCS (Very Expensive)
OPTION 4:
Use Watercooling systems on CPU's
But seriously Now.....
So called "Quiet" fans are avaliable for PSU's and Heatshinks but are rather
expensive.
I have also found that the noisyest fans are usually the CPU ones, these can
be replaced with a slower turning Bigger fan and using ducting and Soft
mounting of the Fan (Rubber mounted) can quieten things down dramatically.
Also How much noise is from Hard Drives????
Another thing I have seen done in the past is a box made of 25mm thick Custom
Wood (or MDF) and lined with 1 layer of 1/4" medium density foam rubber and 1
layer of 1/2" low density foam with a vent at each end that went outside with
external fans to force the air through (1 suck and 1 blow).
It was almost dead quiet - Lifting the Lid it was a huge difference in volume.
By Memory it was in a lawyers or acountants office here for there main
servers and (very noisy) tape backup system - this was back in the last
millenium ('92 or '93), but I cant remember exactly where it was.
I am currently in the process of modifying my case at home to quieten it
down, and at the same time improve the airflow by ductiing it to where it is
needed.
I have designed a simple temperature controlled fan so it generally runs slow
and quietly, and only speeds up when the temperature rises.
I will be using a 4" fan, and ducting it across my CPU and past HDD's.
I will be Slowing the PSU fan down and changing its direction to assit with
the flow I want.
I am hoping I can remove the CPU fan - or I may just slow it down.
The other noisy one is the one on my Video Card.
Hope this gives you some ideas.
Mike.
On Fri, 23 Nov 2001 11:49, you wrote:
> Things have reached breaking point with regards to noise.
>
> I have a small render farm, which by virtue of tight deadlines runs
> permanently, more or less.
>
> As PCs get more powerful, so they have become noisier. Recently, the
> hums generated seem to be *almost* reinforcing each other creating an
> unsubtle low-frequency droning that can be hard from the bedroom. A
> stethescope reveals that no one PC is responsible.
>
> So, I wonder, what are the options for quiet PCs these days?
>
> I have the sneaking suspicion that the answer is "not much" and all the
> gear is going to have to go in an armour-plated shed. Even then I'll
> want quiet workstations. It could get very, very pricey and that's bad
> news right now.
>
> Vik :v)
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