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Top Radiator .. Intake or Exhaust? Help on this is appreciated

post #1 of 17
Thread Starter 
So i'm building my new case and i have some doubts on what to do on the top radiator ...

Basically i'm using a 420 and a 280 BlackIce GTX radiator with push-pull 140mm fan configuration...

But i'm having some problems on how to do the air flow...

So i have these 2 options ( blue rectangles are intake fans, red are exhaust ) :

ATCS840_AIRFLOW.png

My inicial thoughts were to just leave the rear fan as an exhaust and use both rads as intakes ... this way they would get fresher air improving the performance.

The front fan is a 180mm Silverstone Air Penetrator that will have a clear path for the air flow, so it will be able to intake the cold air to the end of the case...

What do you think it's the best option? The left drawing or the right drawing?

Here's actual photos of the case...

rc840_01.jpg

rc840_02.jpg

Rc840_03.jpg

Rc840_04.jpg


Thank you for your help
post #2 of 17
I used the drawing on the right for my build because I don't want hot air running through my case... primarily because of my xfire setup... those things run hot, and when they run hot, they run loud...

Obviously, the left drawing is best for your cpu cooling--if you have a dedicated gpu block + rad, then I would use the left.
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post #3 of 17
hot air rises. top as exhaust
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post #4 of 17
I have my rad mounted up top inside exhaust and it works just fine.
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post #5 of 17
nvm. didnt see it was for rads. but yea i think top should be exhaust then.
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post #6 of 17
Gotta go exhaust... why work against nature
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post #7 of 17
Exhaust.
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post #8 of 17
Second pic!!!
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post #9 of 17
Exhaust. The intake configuration may overheat your gpu/cpu because you don't have enough fans to pull the hot air out...
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post #10 of 17
Both rads should go the same way to avoid pre-heating the air going into the second rad. IE both exhaust or both intake. Orientation really doesn't matter beyond that, the fan power will easily overcome any convection due to the heated air in the case if you want to set them as intake.

Edit: Intake/Intake on the rads, all else as exhaust. Or vice versa.
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