Need slim, reasonably quiet PSU for rack server!

PSUs: The source of DC power for all components in the PC & often a big noise source.

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BrotherEstapol
Posts: 8
Joined: Tue Oct 07, 2008 12:03 am
Location: Australia

Need slim, reasonably quiet PSU for rack server!

Post by BrotherEstapol » Tue Oct 07, 2008 12:21 am

This is what it's for:
http://www.msicomputer.com/product/p_sp ... &class=spd

...and this is what it in at the moment:
http://www.rackmountnet.com/ps/emacs/p1 ... a6250p.htm

It howls like a banshee, so I want to get something quieter so I can use it as a home server.
I thinking there's not much chance of finding a quiet one since servers are generally loud due to being locked away in a rack in a room somewhere and not in the hall cupboard in your house.

Thanks in advance!

born2code
Posts: 49
Joined: Tue Jan 30, 2007 4:09 pm

Post by born2code » Tue Oct 07, 2008 2:48 am

I don't think there is such a thing. If you want a quiet power supply, switch to a tower case.

The reason those power supplies are so noisy is because the fans are so small they have to spin very fast to make up.

BrotherEstapol
Posts: 8
Joined: Tue Oct 07, 2008 12:03 am
Location: Australia

Post by BrotherEstapol » Tue Oct 07, 2008 3:58 am

Well after looking at it and having a good think, I reckon I could swap the fan out as it's only got the one 40mm in it.
Sticker says it's 12v 0.5v.

I found a 19dba that could replace it, but it's 0.07v...would that be an issue? Would just mean the fan isn't spinning as fast as the one it's replacing?
Also since it's moving less air heat could prove to be an issue...

Any thoughts?

Geeky1
Posts: 23
Joined: Sun Jun 13, 2004 3:59 pm
Location: SF Bay Area, CA, USA
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Post by Geeky1 » Thu Oct 09, 2008 11:19 am

You should be able to swap the fan, but as born2code pointed out, it would be ill-advised to do so. 1U PSUs are packed very, very tightly and a low flow 40mm fan will cause overheating, I can virtually guarantee it.

Also, if you look at this picture:
http://img.tomshardware.com/us/2004/03/ ... ver-05.jpg

You'll notice that there are 2 high speed 40mm fans for the CPU heatsink back there as well. Those are going to cause at least as much noise as the PSU fan when they're running flat out, and I suspect that you'd want to change those out as well. Again, this is going to cause a heat problem in a 1u case.

Bottom line:
The board looks like it's either ATX or a very close approximation of it. Put it in a normal-height case if you want to quiet it down.

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