How to Install a dual fan PSU - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Monitors, Printers and Peripherals
Click Here to Login
Closed Thread
Thread Tools Display Modes
Old 01-04-2005, 11:56 AM   #1 (permalink)
Newb Techie
Join Date: Jan 2005
Posts: 12
Default How to Install a dual fan PSU

My question is: How do you install a dual fan PSU. Obviously one of the fans must point toward the outside of the box as the power connects to this.

My question is about the other fan. It seems that to install it correctly the second fan should face up...toward the ceiling of the box, but it makes more sense to me to point it downward as this will help suck heat out of the case.

So which is it? ... and does it matter if a PSU is installed upside down?


cjkeeme is offline  
Old 01-04-2005, 12:17 PM   #2 (permalink)
Master Techie
Join Date: Jul 2004
Posts: 2,932

Usually dual fan PSU's have one fan at the back (with the switches and power cable) and another on the bottom. You want the bottom fan to be pointing down (logically, at the bottom when you put the PSU in the case). This usually pulls air up through the case, through the PSU and out the back.

If you installed it upside-down (bottom fan up) you wouldn't be doing any good, since it would be grabbing air from above your case (through a hole in the case) and then blow it out the back.


Don\'t hate the player...Hate the game...
ShoobieRat is offline  
Old 01-04-2005, 01:17 PM   #3 (permalink)
Newb Techie
Join Date: Jan 2005
Posts: 12

Yes, I know that it makes sense to install the fan downward, but then all the text printed on the back of the PSU is upside down - thus I assume that the PSU is upside.

All other PSU installs I have done have the text upright. Does anyone else have a suggestion to this confusion I'm having?
cjkeeme is offline  
Old 01-04-2005, 02:44 PM   #4 (permalink)
Techie Beyond Description
Nubius's Avatar
Join Date: Aug 2004
Posts: 11,600

Sticker is slapped on wrong

Doesn't matter though dude, I've come across this question a few times and you simply just can't pay attention to the sticker. Although it's annoying that it's upside down, trust us in that the bottom fan intakes air and then the one on the back blows it out. Should be sucking hot air right off your CPU actually so it should help the entire system out a little which I think is generally the idea. Just adding another port for air to escape from the entire box.

Like I said though, don't worry about the sticker....unless you're really concerned then you could always cut a hole out the top of your case and put the PSU upside down so the sticker is the right way
Nubius is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:57 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.