If I would get the 3570k then I would get the Asrock z77 extreme4 and overclock it to about 4.2GHz, if I would get the 4670k I would probably get the Z87-G43 but I don't know how much I could overclock it to, would I be able to get it to 4.2 safely? (the price of the 3570k and 4670k is almost exactly the same)