Case that I have is the arc midi. Deciding the amount of fans/where to put them to be able to effectively cool my stuff. I have a i5 2500k oc'd at 4.5 using a hyper 212 evo. Going to grab a second gtx 570 to throw on and was wondering if have only 4 fans(3 140mm case and 1 120mm cpu cooler)would be enough. The fans are in the 2 front spots for intake and the back exhaust. Should I get any more 140mm fans in order to cool the 570's w/ a slight overclock?
Also, my gpus are the msi twin frozr 3 so they end up exhausting most of the hot air straight into my case.
I wouldn't think it would be needed, the vid cards will exhaust out the back and with two 140 intakes you should have enough positive pressure in your case to adquately ventilate. I would personally hold off a fan purchase for now...
It's really a matter of personal preference. I like to keep things super cool. I say the more fans the better. I have 7 including a top 200mm and two 120s on my Hyper212, two 120s in the front, a 140 on the side, and a 120 out the back. Noise is not an issue. My GPU fan is the loudest but temps never get above the mid 50s for my CPU.
I used to run dual 560Tis and it would get hot. Now this may be a bit overkill, and I am a bit OCD with my temps, but fans are pretty cheap so if you think you may need another it's not a huge deal. With that said I would wait and see what the temps are like with the SLI setup before doing anything though.