Your fx 4300 is about as good as it gets for that mobo. For the relatively few fps, the price to upgrade to a 6300 isn't really worth it, and the board won't support anything larger than 95w. Best bet is OC. FX Cpus thrive on OC, its a crying shame amd clocked them as low as they did. Their feeble attempts at factory OC ended up as the 9370 and 9590. Even though the mobo isn't the best, shouldn't be any reason you couldn't get 4.0GHz or maybe better from it. Anything will help. Unless you want to make the move to Intel, but that's expensive. You can also OC your gpu, it'll improve fps some together with the cpu, you could get what you need for the game, or maybe better.