Hello. I recently upgraded my graphic card from a 8600 GTS to a HD4850. My processor is a Pentium D 940, 3.2 Ghz. I haven't seen big improvements on fps etc. in games, and when surfing the internet I've seen people getting much higher fps in games, such as crysis, with the same card. I'm not a "nerd" in this subject, but i wonder if my processor aint good enough for my gfx? If that's true, I've been thinking about upgrading to a C2D E8400. Would this be a sufficient choice for my HD4850? My motherboard is an AsRock 4Core1600Twins-P35 .