since you're using a socket am2 3800 then the proc upgrade would be a nice addition and you will definately see improvement. But understand that some games are very graphics intensive, some games are more processor intensive so you should keep that in mind. But with the 8800 graphics card and the new processor you should be able to run everything out today with the possible caveat that crysis will be on lower settings. It may be helpful with crysis to figgure out where the performance is being hurt; check your processor while running crysis, if its stressed out too much you can limit the draw distance, # of corpses, that sort of thing do reduce strain on the processor; if the graphics is too stressed then you can reduce visual effects and lower resolution.