Originally Posted by Kyouki
So guys with your cards how are the inside case temps being effected? I understand with one GPU blowing into the case might see a small rise in temps, but wanted to see how this is effecting you and if it is a big deal? My CPU is on a H100 so i assume inside temps wont hurt it to much. But as I have been waiting for my GTX690 to get here I been buying few extras to MOD my case and I had thought up an idea to make an exhaust for the GPU inside, but don't know if it even worth worrying about.
Well I gave it alot of thought and also asked around for advice. Someone suggested turning on of the intake fans that lines up with the exhaust of the 690 so it blows the hot air straight out. For me this would be my middle fan. However, I have a top front and bottom front as well...so this would of pushed the hot air straight out, but then the top/bottom fan would suck some of it back in. Being I have 2 cards, it was a concern and so far in my testing, it has not been an issue. I also have very good airflow in my case. Here is a pic that shows it.
I basically have 3 front intakes...behind the top and middle fan I removed the HDD cage so there is nothiing blocking air flow. On the back side of the bars that boarder the Hdd cage I placed 2 internal fans that basically work in a push pull configuration. These fans take the cool air from the 2 outer fans and pushes the air into the case. As you can see in the shot, the upper internal fan is angled cause I wanted to have some air blowing over the memory and parts of the mobo. What I found is that the internal middle fan is mixing cool air with the hot air...there is a 200mm fan on the bottom pushing cool air from outside the case up and then the angled fan is capturing some of this and also mixing it's cool air with the air from the GPU's which at this point have cooled down.
I also am running a H100 in a push pull config. and temps are not effected at all. Been running my Realtemp monitor as I am doing these Unigine runs to be sure and the highest CPU temp is one core at 63c.
The bottom intake fan is used primarily to blow cool air over the SSD and my 2 Hdd's. Since those dont warm up too much what also is happing is that 200mm bottom fan is grabbing that cool air as well and pushing it up. In short, the two 690's are outputting hot air which then is met with the cool air from the intake fan and the bottom fan is pushing cool air up. Ironically, the 2 GPU's that run the coolest are the 2 that are exhausting air into the case. In the runs I am doing right now, GPU 2 & 4 are running on average 3-5c cooler than GPU 1 & 3.Edited by Stateless - 5/11/12 at 9:18pm