It would be easy to jump on the bandwagon, but I think it depends as well. A faster CPU and more memory can impact MINIMUM FPS quite a bit. Some games, such as Crysis and AOC, can really choke sometimes and benefit more from processing power and adequate memory.
It's not, after all, average FPS that you notice. It's the minimum.
IF you have a good cooler, and good motherboard, and can push the E7200 up over 3.4Ghz, then I say yes to that.