I would suggest getting a better graphics card if gaming is your primary concern. The 480 is pretty dated though. I would suggest a Radeon 7850 without knowing what your budget is.
Do you get playable frame rates? If you do just hold off until the next gen stuff comes out as far as CPU, my advice would be get a 7870LE right now. And then have fun gaming
Wait for next gen or if you are the type who cant wait, then get fx-8350 and the best gpu you can get for your budget or a little lower end cpu and a better gpu.