So, I installed the Corsair H60 with the following airflow:
* 140mm intake at bottom
* 120mm intake at front
* 120mm from the H60 at rear
* GTX570 with Accelero cooling inside
Idle temps from my Core i5 750 are now about 40°C, same for my GPU. When gaming, the GPU goes up to around 60°C (very good!) and cpu around 60°C (when putting the Corsair fan at 50%). When putting the Corsair fan at 100% (pretty loud to my ears), CPU temps go to around 52-55°C.
There's quite a bit of hot air coming out of the case where the radiator is, so essentially this is ok, since this means the heat is transferred out of the case. I do suspect though that my GTX70 using the Accelero coolers is the main factor for hot air inside my case, since there's not direct output to the outside of the case from the videocard like there is when using the stock cooler (which is way too loud for me, and doesn't cool that well either, so I got the Accelero)
Any adice to get better airflow or get the hot air (mainly from the GTX) out of the case? Would I do any good putting a casefan on the side? If so, do I let it suck the air out of blow in? Mind, I want to keep noise to an absolute minimum!!
60s for CPU load is normal. 60s for a GTX570 GPU is very very good temps. hot air or not, with temps that low I would probably lower fan speeds even more. I would not be looking to add more fans.