Question Front fans intake with radiator behind ???

Tenpinsmick

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Oct 11, 2013
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Wondering what setups people have found best on keeping CPU cool etc.

I purchased a Corsair 680x and have put a 280mm rad behind the 3 front 120mm intake fans and have 2 140mm fans on top as exhaust. Rear 140mm fan as intake and bottom 2 140mm as intakes also.
I’ve heard and seen some setups suggesting radiator ontop with fans as exhaust.....can’t quite see the logic in pulling hot air you want to escape the PC through a radiator which is connected to CPU.
 

USAFRet

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Mar 16, 2013
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Wondering what setups people have found best on keeping CPU cool etc.

I purchased a Corsair 680x and have put a 280mm rad behind the 3 front 120mm intake fans and have 2 140mm fans on top as exhaust. Rear 140mm fan as intake and bottom 2 140mm as intakes also.
I’ve heard and seen some setups suggesting radiator ontop with fans as exhaust.....can’t quite see the logic in pulling hot air you want to escape the PC through a radiator which is connected to CPU.
Front intake, or top exhaust.

There is no One True Way.

Having the rad on the top as exhaust is not as bad as it sounds.
The air in the case is (hopefully) being continually refreshed by fresh air pulled in from front fans.
It is not a static box of hot air.
 
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Nov 17, 2020
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I believe the theory is as follows...

For CPU: Front radiator is best (as you have). Less effective at cooling GPU as warmer air coming in to the case
For GPU: Top mounted radiator. Less effective for CPU as hotter air being used to cool radiator
 

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