You would be better off with a FX 6350, or equivalent Intel CPU.
PS: CPU intensive games only for the most part though, or games that can use more than 4 threads. BF3 multiplayer for example. In BF3 you would be fine in the single player aspect, but the multiplayer part will make the FX 4100 hurt a bit for sure. It is increasingly becoming more common in the games coming out now, and in the future to use more cores/threads.