the 980x is the most expensive cpu, but not the fastest for gaming. the i5 2500k is the king ATM as games right now dont use more than 4 cores/threads and it can be oc'd to 4.5ghz on air. If you already have the cpu, just oc it, its easy, buy a decent heatsink/fan. If you google "overclock 980x" you will come up with plenty of ways to do it.