About Power Supply Fan

Royel · 20-06-2006, 07:54 PM

Quick Question:

Does the power supply fan count as a heat extractor? I can feel air being blown out of it...I think.

I was thinking of adding another fan to the bottom to intake cool air and I was wondering if the power supply at the top is a heat exhaust.

Big B · 20-06-2006, 07:52 PM

Yeah, it does act as a heat extractor. Naturally, heat rises, so it's going to go in cold at the bottom and go hot out the top.

zeus · 20-06-2006, 07:53 PM

If its blowing out, yeah.

Ive just checked both of my psu fans and one of them is blowing out and the other Ive found not to be working!

The air in the case will be cooler than the air in the psu. I personally would add a fan taking air out the case into the psu with the original psu fan exhausting it out the back.

Looks like I got beat to it, but its made me think about what you mean by bottom. I thought you meant bottom of the psu but it seems you mean bottom of the case.

Royel · 20-06-2006, 08:10 PM

Also, if I'm going to buy a small fan (~$10-$20), how do I know what type of pin my motherboard has?

zeus · 20-06-2006, 08:55 PM

Either have a look on the board for a spare supply or get a fan which uses the same supply as your hard drive and cd rom drives.

Addis · 20-06-2006, 09:05 PM

On the motherboard, there is usually a small connector socket for fans, labelled as SFAN or similar. If it is free, then you can plug the fan into that. If not then some fans have a connector which allows them to tap into the 5v rail from the power supply. (molex connector)

zeus · 20-06-2006, 09:46 PM

Quote:

Originally Posted by Addis

(molex connector)

MOLEX, thats it. I couldnt for the life of me remember what they were called. That was bugging me since my last post.

20-06-2006, 07:54 PM	#1 (permalink) Top
Royel Geek Trainee Join Date: Jun 2006 Gender: Male Posts: 6 My Mood: Sleepy Status: Offline	About Power Supply Fan Quick Question: Does the power supply fan count as a heat extractor? I can feel air being blown out of it...I think. I was thinking of adding another fan to the bottom to intake cool air and I was wondering if the power supply at the top is a heat exhaust.

20-06-2006, 07:52 PM	#2 (permalink) Top
Big B HWF Godfather Join Date: Dec 2001 Age: 28 Male Posts: 9,636 Times Helpful: 585 My Mood: Devilish Status: Offline My Computer	Yeah, it does act as a heat extractor. Naturally, heat rises, so it's going to go in cold at the bottom and go hot out the top. __________________ Hardware Forums\|HWF Rules\|My DVD's\|PSU FAQ\|HWF Folding Team\|2CPU

20-06-2006, 07:53 PM	#3 (permalink) Top
zeus out of date Join Date: May 2003 Age: 27 Male Posts: 1,643 Times Helpful: 105 My Mood: Twisted Status: Offline My Computer	If its blowing out, yeah. Ive just checked both of my psu fans and one of them is blowing out and the other Ive found not to be working! The air in the case will be cooler than the air in the psu. I personally would add a fan taking air out the case into the psu with the original psu fan exhausting it out the back. Looks like I got beat to it, but its made me think about what you mean by bottom. I thought you meant bottom of the psu but it seems you mean bottom of the case. Last edited by zeus; 20-06-2006 at 07:55 PM.

20-06-2006, 09:05 PM	#6 (permalink) Top
Addis The King Join Date: Jan 2004 Age: 18 Male Posts: 5,255 Times Helpful: 403 My Mood: Drunk Status: Offline My Computer	On the motherboard, there is usually a small connector socket for fans, labelled as SFAN or similar. If it is free, then you can plug the fan into that. If not then some fans have a connector which allows them to tap into the 5v rail from the power supply. (molex connector) __________________ Never trust a program you don't have the source code for. My website \| Powerful Desktop Linux \| Linux for human beings \| Linux for power users \| Linux for ricers

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20-06-2006, 08:10 PM	#4 (permalink) Top
Royel Geek Trainee Join Date: Jun 2006 Gender: Male Posts: 6 My Mood: Sleepy Status: Offline	Also, if I'm going to buy a small fan (~$10-$20), how do I know what type of pin my motherboard has?

20-06-2006, 08:55 PM	#5 (permalink) Top
zeus out of date Join Date: May 2003 Age: 27 Male Posts: 1,643 Times Helpful: 105 My Mood: Twisted Status: Offline My Computer	Either have a look on the board for a spare supply or get a fan which uses the same supply as your hard drive and cd rom drives.

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