In my gaming rig, I have an i5 4600 cpu. That has 4 cores and 4 threads. I am able to run doom just fine along with many other games. So that is what you need for gaming, however, I do not do editing like photoshop. For that, you should get a little more. I would say 4-6 cores and some more thread. I am not 100% sure on the thread part, but have more than I do, I know that much.