Depends on your motherboard, if you're gonna buy one i'd go for z97 and i5-4670k (overclock) or simple i5-4670. I don't know what is all this fuss around i5-4690k, gets much warmer than 4670k, and consumes more (w), technically i5-4690k it's the same chip as 4670k but with slightly bigger overclock rate .