Hello, I just purchased a xfx 8800gs from newegg(running at 580core/700mem) and it is performing solidly in all my games except crysis. So I decided to overclock it a bit(650/780) and see how much my fps would increase. I ran the crysis built in benchmark program and got an avg of 33 fps on medium quality, and after the overclock I got the same number!

I have tried ntune, riva tuner, and ati tool. Is there a bottleneck in my system?
thx