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PSU FAN ... Intake or exhaust ?

post #1 of 7
Thread Starter 
hello,
i just wanna ask that what actually a psu fan does...is it intake or exhaust...
Don't knew this....please help..

Thannxx..
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post #2 of 7
Quote:
Originally Posted by henryy5ghz View Post

hello,
i just wanna ask that what actually a psu fan does...is it intake or exhaust...
Don't knew this....please help..

Thannxx..

its intake
post #3 of 7
It's neither. For bottom mounted psu's, the fan intakes from the bottom and exhausts out the back in its own system. It does not mix with the case flow at all. So if you're talking about overall case flow, it's neither. If you're talking about what the psu actually does, then it's both. It's intake at the bottom and exhaust at the back. With top mounted cases, then the psu becomes exhaust since its intake will be inside the case.
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post #4 of 7
Quote:
Originally Posted by Cha0s_Cha0 View Post

It's neither. For bottom mounted psu's, the fan intakes from the bottom and exhausts out the back in its own system. It does not mix with the case flow at all. So if you're talking about overall case flow, it's neither. If you're talking about what the psu actually does, then it's both. It's intake at the bottom and exhaust at the back. With top mounted cases, then the psu becomes exhaust since its intake will be inside the case.

doh.gif he is just asking about psu fan, not airflow in the computer case, you are just confusing yourself.

bottom mounted or top mounted, the psu's fan function is the same, the fan takes air from the outside of the psu, blows it inside the psu components, then the hot air from inside the psu will get expelled to the rear holes

PSU FAN = INTAKE
Edited by ghostrider85 - 3/11/12 at 5:17am
post #5 of 7
Thread Starter 
Quote:
Originally Posted by Cha0s_Cha0 View Post

It's neither. For bottom mounted psu's, the fan intakes from the bottom and exhausts out the back in its own system. It does not mix with the case flow at all. So if you're talking about overall case flow, it's neither. If you're talking about what the psu actually does, then it's both. It's intake at the bottom and exhaust at the back. With top mounted cases, then the psu becomes exhaust since its intake will be inside the case.

i actually do have a corsair GS600 PSU... So what does it actually possess...a intake or exhaust fan....
I do have a corsaie carbide 400r case which do have a psu mounting part at the bottom..
What i actually did is that my psu do had LED and glows...when PSU is powered up.....
I do had installed the PSU in such a way that that its PSU fan is facing towards my obo or say the psu fan faces inside my mobo.......

The psu fan actually light up as i had earlier mentioned...which creates a good glowing effect .....

So in all do it had any effect on case flo or not...

I'm done and please reply..

Thanxxx and sorry for so being long and so boring...
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post #6 of 7
It wont effect your airflow much, it may be marginaly better as it wil pull some of the hot air away from your GPU(s) and southbridge, but you probably wont notice it. Be carefull to cover the fan when you are doing something on the PC though, you dont want to drop any screws in there smile.gif
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post #7 of 7
There is no issue in the way you have mounted and zoid.srg gave you a great respond. But the point of bottom PSU mounted case is to keep the PSU airflow separate from Case airflow by keeping the fan downwards. That will make that psu get the unaffected cool air.


have you seen some PSU where you have the small fan same on the power cable plugging site.. Those fan are exhaust fans.

Eg:
http://t3.gstatic.com/images?q=tbn:ANd9GcT-DTdR5_jhFHu8Gzabsuj4i2gs1Bwu_l-0u61OmIPmls7C6O1ysA
This is Exhaust fan




http://www.dansdata.com/images/gtr450/psu_1280.jpg
This is intake fan so your GS600

By mounting Fan downward you get separate airflow for PSU
Fan upward you will use the PC hot air to be taken in by fan and exhaust through back PSU vents.
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