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Corsair 650D case fans intake/exhaust for non-reference 780 cooler

post #1 of 4
Thread Starter 
My rig was originally 2x7970 reference cards and have my case airflow setup to accompany the two blower type cards. My EVGA 780 with the ACX cooler will be coming on Monday, and I want to prep my case for when it gets here.

At the moment, only my top fan is exhaust while the side panel and front fans are intakes. I also have a 120mm fan inside the case right in front of the 7970 which is an intake.

6898988335_35391c844c_b.jpg

6953005543_ed3cd4960d_b.jpg

The 780 will be throwing heat all around my case and with my current config, I am pretty much trapping the air inside unless all that air pressure is being exerted through the top exhaust because there's so much air, it'll be like a wind tunnel effect?

I was thinking of making my side fan exhaust, but I don't know what to do with the fan I have inside. If I put it as exhaust, to dissipate heat away from the GPU, it'll get trapped between the front intake.

Or, I can have the side fan as intake and both inside fan and front fans are exhaust?
Or, I don't even use a side panel fan because I only made it because my 7970s were ovens so I had to.

I know this card will run cool, but I just want to maximize case airflow if I am able to anyway.

Thanks.
post #2 of 4
Looking at your pic Im confused about what the CPU fans are doing. Are they blowing against the rear fan??

I would leave your front, side and internal GPU fan as intake so bringing cold air into the case and onto the gpus. You could also add a fan as intake at bottom front. Change your rear fan to outake and make sure the CPU fans are directed towards it and add another outtake fan to the top.

Overall that would leave you with positive pressure and hot air will be forced out of the case.
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post #3 of 4
Thread Starter 
Oh yeah, I forgot to mention about those two fans. The CPU and rear fans are exhaust. So, I should keep side fan as intake and not exhaust?
post #4 of 4
yep. You could also add more fans on the side to bring in additional cool air on to the GPUs and you could also add additional fan on the roof as exhaust. With Positive pressure cases hot air is forced out of other holes in the case anyway so Im sure it will be fine.
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