Thanks for the answers! My system: asus maximus VI hero, corsair vengance 16gb, gainward gtx 770, kingston hyperx 3k 120gb, wd black 1tb, nzxt switch 810. Im using the stock fans with the case and the h100i. At a 4.5 ghz oc i get 40C idle, 70C when gaming but when rendering or stress testing it goes up to 87C. I cant get a stable overclock above 4.5 since temperatures goes up to 97C and i get a blue screen. I also dont want such high temperatures. My room is about 24-26C. I would also bee interested in better ek parts than that kit, where i live they only sell ek watercooling no other brand like xspc,alphacool,swiftech.