power supply fan quick question

[Cheetah8799]

Quick question.

You know the power supplies that have the normal 80mm exhaust, PLUS the internal 80mm x 10mm fan that is supposed to help blow air into the power supply and out the back. Well, how important is it to have that internal fan run full speed?

Anyone think it would be a bad idea to have it run at say 9v or 10v instead of 12v?


Reason I ask is because I modded my psu to let me control this internal fan via my Vantec Nexus fan controller. It's kinda loud at the full 12v, but is pretty quiet at roughly 9v.


EDIT: the exhaust 80mm fan has already been replaced with a quieter and higher cfm model. So that should improve airflow to counter the internal fan I think.

 

[Operandi]

What PSU is this.... shouldn?t the fans be dynamically controlled by the PSU anyway?

 

[Cheetah8799]

I'm not sure of the brand/model at the moment. It's a generic cheap one... Nothing fancy with thermal controlled fans... It just runs them full speed all the time.

 

[0roo0roo]

depends on the heat it puts out and the efficiency. look at the specs for the max temp if you can find it. as for fan speed control, its rare that automatic ones work well, they generally change speed at arbitrary temperatures. and for ease of design and safety, they just make sure they spin fast basically all the time. they only start off silent for the first couple minutes while things heat up. a gimic really.

seasonics super silencer series actually has good fan speed control. http://www.silentpcreview.com/...?t=s&id=97&a=1

recommended psu's and info from http://www.silentpcreview.com/article28-page1.html

i used to connect my antec to a fan controller too. it worked, but i never turned it down to the level that the super silencer line. since theres no safeguard against overheating, and less efficiency = more heat to begin with.