I DL'd Nvidia precision today and OC'd my video card. It's hard to believe my old 8800 GTS 512 was running the game tonight with self shadows, smooth shadows, building shadows and ground clutter at 1024 res at a smooth 55-60 fps in nearly all situations, none of which I could run before. The only thing that seems to hurt my FPS is bump mapping buildings but I don't actually like the difference anyway. I've also left off shadows on others, bump map my vehicle and bump map other poeples vehicles. Other than that everything is on and all sliders are maxed.
Stock card speeds: 670 core clock, 1674 shaders, 972 memory
Speed I hit but unstable: 800 core clock, 1998 shaders, 1160 memory
Settings I'm running: 750 core clock, 1873 shaders, 1088 memory
I origionally had the fan set to auto and ran up into the 80's C but the fan never exceeded 35%. I manually set the fan to 80% and temps remained at or under 60C for hours online.
I set up two profiles; one with stock settings and one with the OC settings. Stock settings launch on start-up and when I'm ready to play I just right click Nvidia precision in my task bar to change profiles.
Again, I really can't believe the difference this relatively mild OC made but am maybe even more astounded that a 5 year old video card is handling the game like it is. Someday I'll have to buy a new one to see what they can do. In the meantime I'm a happy camper now.
BTW, for those who don't know this is mated to an Intel E6750 OC'd to 3.2 Ghz with 4 Gb Kingston Hyper-X (4-4-4-12) on an Nvidia 780i running Win XP Pro, pushing an LG 22" widescreen LCD and powered by an 850W Corsair PSU.
Forgot to mention other relevant data: Running 8x AA, 4X anistopic filtering, 3 frame pre-render with most other card settings maxed and overriding game settings.