The i5 6500 is a pretty powerful lil beast! I built my wife an i5 6500 machine on a z170 mobo (yeah, I know people are gonna rag on me for not getting the 6600k), but I'm into tinkering etc.. and the non k chips can be oc'd on some z170 boards. That's neither here, nor there. I'll experiment with that later, but for now I have her set at stock settings. I have a 4690k on an Asus Z97a motherboard and hers is an Asus Z170a, I have my 4690k oc'd to 4.5GHz, her 6500 is at stock settings and there is virtually no difference at all in gaming fps!