there will be a few games where it will bottleneck it, like crysis 2 and skyrim and probably a few more cpu intensive titles, although they should still play fairly well the fps may drop low in parts of the game. you wont gain much by going to an FX cpu, they aren't any better for gaming, some of the lower end ones are far worse. I would go with increasing the overclock, should be able to get to 3.5ghz with good cooling. If you plan to upgrade the cpu and everything later then get it. If you dont plan to upgrade cpu, then maybe just go for 7850.