Do not forget, a good clean up of the CPU cooler fins, air intake filters of the case and you gain 4-5 deg on core temps. That is a lot when you run OC. Much more to be gained if your case is really dirty or you are in a very dusty site. I gained nearly 30 deg when I cleaned the rig of my kid that was overheating. Everything was clogged in a pretty compact rig with a powerful graphic board. This was one years ago and after two years of daily use where he had never cleaned it. If you OC, regular cleaning is a must.