ok.i just bought a system with a gtx 275 card but i m getting unussualy low fps in the game when the physx is on high.during the scarecrow level and when i enter some buldings in some part the fps declines to nearly 30.is this result unusual or is there some problem in my hardware as i can run crysis on max easily without this much stuttering.
4GB DDR3 RAM
Oh and is it a fact that games run better on win xp than win 7?
Check that your drivers are up to date. You can also try turning PhysX off completely.
And no, it is not a fact that games run better in XP. It depends on a great many factors. Some games work better in 7 than in XP while others don't work at all. Benchmarks suggest that XP may be a little faster, but not enough to be noticed in most cases.