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Corsair 800D top fans

post #1 of 9
Thread Starter 
I currently have a triple rad mounted on top with fans pulling air down from outside of the case. This gets relatively cooler air through the rad fins but I noticed the ambient internal case temp gets very very hot (also due to my hot northbridge). The only exhaust fan in the case is a 140mm fan at the back that seems to be blowing out very hot air.

Would using the top 3 120mm fans as exhaust fans affect the watercooling temps by a lot? If I do this, I plan to make the back 140mm fan an intake fan
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post #2 of 9
It will probably have a slight effect but I doubt anything significant. If it were me I'd rather be getting that hot air outside of my case and use the rear fan to feed some outside air into the rad.
Edited by Xazen - 3/12/11 at 6:59pm
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post #3 of 9
Thread Starter 
Thanks. Il try making the top fans exhaust
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post #4 of 9
Quote:
Originally Posted by Timechange01 View Post
Thanks. Il try making the top fans exhaust
That's how I have mine set up. The back 140 is intake and the top 360 rad is exhaust.
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by amantonas View Post
That's how I have mine set up. The back 140 is intake and the top 360 rad is exhaust.
How did it affect your WC temps? Im hoping it doesn't rise by a lot
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post #6 of 9
Heat does rise so if at all possible I would attempt swapping the fans around and see if mobo temps are any better while drawing air from the case itself.
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post #7 of 9
Quote:
Originally Posted by blackbalt89 View Post
Heat does rise so if at all possible I would attempt swapping the fans around and see if mobo temps are any better while drawing air from the case itself.
Yes, but the effect is not very strong. you can contradict the laws of heat with some semi powerful fans.

you can make hot air sink by using 3 powerful fans in the bottom, but that isn't practical.
post #8 of 9
Quote:
Originally Posted by Timechange01 View Post
How did it affect your WC temps? Im hoping it doesn't rise by a lot
I didn't notice any difference. The reason I did it was because, like you said, the combination of northbridge and the dumping of heat into the case just made me feel like it wasn't practical.
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post #9 of 9
Thread Starter 
Alright well flipping the fans definitely made matters worse. The internal temps have lowered by ~2-3C but my loop temps have risen dramatically especially during load. There is scorching hot air going through the rad fins and coming out of the top of the case now. Im flipping the top fans back to intake position
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