Basically, if you want to overclock a Sandy Bridge processor, first of all it has to be a “K” series CPU, meaning that all the cores are unlocked. Hence a Core i7-2600, for instance, cannot be overclocked, while the Core i7-2600K can indeed be overclocked from it’s stock 3.4GHz up to 5GHz and beyond. For overclocking the “K” series CPU and memory, one was limited to the P67 motherboards, while overclocking on the H67 motherboards was limited to the onboard integrated GPU. I have to say that Intel did design the H series motherboards for HTPCs and the like in mind, but to restrict the movements of the hardcore overclocking community with the P series was quite disappointing. What the Z68 platform brings is a combination of both the H series and the P series motherboards into one glorious package..



Link: Overclock3D