H100i and case cooling questions

Sluggy71

Honorable
Apr 8, 2014
4
0
10,510
Hi everyone, first post here.

I'm giving the PC a bit of a refresh, and have bought a H100i cooler, a HX750 PSU, a second 660ti for SLI and a Gigabyte G1 Sniper 3 Z77 MB to go with my existing 3570K at 4.2GHz, and since I've read here that the H100i fans should blow into the case through the radiator I thought I'd rethink my cooling setup.

At the moment I've got a front fan sucking into the case, a bottom fan sucking into the case, and a fan blowing air out the back. Since the H100i will be blowing warm(er) air into the case and towards my GPUs, should I set up a side fan blowing this air out, or sucking cool air into the case and onto the GPUs? I've also read here that the rear fan should be turned around to cool the chipset, but then I'd have the two H100i fans, the rear fan, the bottom fan and the front fan all blowing into the case. Any suggestions? The PC itself is in a permanently aircond room at 20C, so ambient temp isn't a problem. I suspect I'm starting to overthink things here, but it never hurts to ask!

Cheers, SLuggy
 
Solution
Keep the front and bottom as intakes, and use the H100i as exhaust out the top. If you can fit it, I would add a fan on the side to intake air for the dual GPUs, and get you into positive air pressure. You definitely don't want 5 intakes and 0 exhaust lol
Keep the front and bottom as intakes, and use the H100i as exhaust out the top. If you can fit it, I would add a fan on the side to intake air for the dual GPUs, and get you into positive air pressure. You definitely don't want 5 intakes and 0 exhaust lol
 
Solution

Sluggy71

Honorable
Apr 8, 2014
4
0
10,510
Thanks HiTech, I was tending towards blowing air onto the GPUs, and always thought that the H100i would blow air out of the case, but it seems many have it sucking into the case. Cheers again, got a plan of attack now. :)

Cheers, SLuggy
 
It all depends on the case setup, really. You'll obviously get slightly better CPU temps by pulling in cooler air, but trying to get warm air to exhaust out the bottom will have a negative effect on the rest of the system's temperatures. Since you're going SLI, I wouldn't want to mess with temps more than you have to lol There's only a minimal increase in temps between using an H100i as exhaust as opposed to an intake.

Good luck! And if you're bored one day, just try a few different setups out and see; that's really the only way to find out the best solution.
 

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