Originally Posted by abtomat74
Your GPU is fine for GTA4, it's your CPU that fails for that game specifically. If you have at least 3 cores(AMD X3) or obviously any quad core, then GTA4 will play perfectly with a 9800gtx or better.
Crysis will benefit much more from a GPU upgrade then it will with a CPU upgrade in your case.
Screw watercooling. Spend that money on a quad instead.
I agree with this. Your 9800 gtx is fine for the games you play. I would invest in a quality cpu and probably some better ram. What OS are you using?