It is currently Sat Sep 20, 2014 12:09 am

All times are UTC - 8 hours




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: Under-desk noise reflection?
PostPosted: Thu Jan 19, 2012 6:49 pm 
Offline

Joined: Thu Jan 19, 2012 6:41 pm
Posts: 3
Hey all, longtime lurker here on the forum, swear i registered at some point ...


anyhow, i've got a corsair obsidian 800d, with a radiator (2x120mm) in the top. Fans are cougar cfv12hp in push/pull, and a noctua nh12p alongside them as additional intake.

So... the computer sits under my desk, the underside of which is smooth particleboard/MDF/whatever the stuff is called. 1" thick, really solid.

I'd like to know if putting some 1/2" 'pyramid' foam under there would help cut some of the high frequency noise coming from the top of the system, especially when gaming and the stock HD5850 cooler (reference) spins up to ~%50.

There is ~2.5-3.0" of clearance between the top of the 800d and the bottom of the desk.

The 800d is stock, I've just recently learned that removing the honeycomb metal and using round wire grills can reduce noise significantly, so that's on my list as well. The foam is WAY easier to install though, and i'd put it there even after the case-mod, if indeed it will help.

Thanks folks!


Top
 Profile  
 
 Post subject: Re: Under-desk noise reflection?
PostPosted: Fri Jan 20, 2012 6:30 am 
Offline

Joined: Wed Jun 02, 2010 9:15 pm
Posts: 218
Location: Calgary, Alberta, Canada
Momo wrote:
The foam is WAY easier to install though, and i'd put it there even after the case-mod, if indeed it will help.
The lighter the weight of the foam the more useless it is. Go to your local home improvement store and look for things like HEAVY FOAM backed carpet tile.

Momo wrote:
...the case-mod...
To ensure adequate air flow with the least noise some measure of science is prudent.

Generally you should:
-1- test your system and record the results
-2- make a change
-3- retest and compare the results

These are good tools:

CPUBurn - processor stress software x4 for your quad core CPU
FurMark - to stress the GPU
GPU-Z - to monitor GPU temperature and fan speed
ASUS PC Probe - to monitor CPU temperature and fan speeds

Have fun...


Top
 Profile  
 
 Post subject: Re: Under-desk noise reflection?
PostPosted: Fri Jan 20, 2012 4:12 pm 
Offline

Joined: Thu Jan 19, 2012 6:41 pm
Posts: 3
i'd generally agree with you, but i do beleive that this article has done all the research i need to know that i should have a reduction in 'tone' if not straight DB:

http://www.pugetsystems.com/labs/articles/Effects-of-Grill-Patterns-on-Fan-Performance-Noise-107


Top
 Profile  
 
 Post subject: Re: Under-desk noise reflection?
PostPosted: Mon Jan 23, 2012 2:43 pm 
Offline

Joined: Thu Jan 19, 2012 6:41 pm
Posts: 3
There seems to be a schwack of different manufacturers of carpet tile.
Looks like i'll have to go to a local 'floor coverings' store. http://pacificcoastfloors.ca/flooring_products.html

Arbutus, have you used carpet tile for a similar situation? Did it help? which product exactly did you use?


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group