Phenom X4 owning folks

Seriously contemplating making the movie to an X4 after having recently moved from a E8400 to an X2 550. I know the Anandtech benchmarks show a pretty decent increase in performance, but is the $150 for a 965 worth the move?

I guess my biggest motivator is the fact that I'm pretty much maxing out my capacity with WoW / various other games running in windowed mode while also trying to run a bunch of other stuff in the background.