Fan Positioning Help....

Woodi101

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Feb 5, 2013
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So I have the fractal R4 case and i bought the h80i. I positioned the radiator at the back where the 140mm fan would normally go. I then moved the 140mm fan where the radiator is now and put it in the front as an intake. So now there are 2 fans acting as an intake in the front of the case. The H80i has 2 120mm fans in a push/pull that are exhausting in the rear of the case.

My question is....I have two more 120mm fans and theres 3 possible places to put them. The first option is at the bottom and it has a dust filter so i was thinking of putting one there as an intake.
There are also 2 cutouts on the roof of the case. I could also put a fan there or both of the fan there as either an exhaust or an intake...

What should I do for optimal airflow?
Im stumped...:ouch:
 

fatboytyler

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Jan 29, 2012
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Put one at the bottom for intake, plus it'll help blow into the GPU. Then put the other as in out take on the top. You'll get a nice airflow circulation from the bottom part of the front, to the top part of the back. That's the way I have mine setup and its got phenomenal airflow
 

fatboytyler

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Jan 29, 2012
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He said that the H80 was exhausting...
 

fatboytyler

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If I understand him correctly, his CPU cooler is exhausting. Therefore he will have no issue.
 
Right LOL - every exhaust has an intake side, right? So if his H80 is exhausting out the spot where the normal rear fan is, the intake side of it is under or very near the rear top fan spot. If he is puts an exhaust there, it will be fighting the H80 for air to exhaust since the they will be next to each other. He can use the top forward spot as exhaust.
 

fatboytyler

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This is not what you were saying... Or if you were it was worded incredibly weird. Having a rear exhaust next to a top exhaust should not affect airflow hardly at all. If it does, it will be so minimal that you won't notice any difference.
 
Just relaying what I saw demonstrated in a lengthy and pretty exhaustive (ha) article on multi-fan configurations. There was a decrease in performance of two exhausts near each other at right angles. Simply moving it top exhaust to the position closer to the front fixed the problem. I'm out :)