What video card do ou have? The biggest difference maker in gaming is the video card and while the cpu can be a bottleneck at times it's best to have it runnung at a good high speed to avoid that. Anything over 4 ghz will do and then for more performance the video card can be overclocked to get even higher fps.
I'm using the Hyper 212+ and I have my CPU @4.4ghz and 1.29V and it's stable. However, if I try to adjust my GPU at all I run into problems? Should I reduce the OC on my CPU to give me more room to OC my video card?
I'm running an XFX DoubleD 7870 at stock right now. If I OC that at all under the current CPU settings my PC enters Power Save mode within about 5 mins of gaming. No overclock and the computer will run all day, so I"m suspecting not enough voltage?
I did experiment with upping the voltage to 1.35, but was still running into the same problems. BTW, my temps are fine. I want to OC the card, but not at the cost of not being able to OC my CPU at all, any suggestions?