Update, Heres an interesting discovery, after flashing my 8800GT to my tested and OC'd settings, I ran a previous benchmark to compare against the Riva Tuner software controlled OC benchmark I'd previously run, and with Riva Tuner out of the picture, the score increased by almost 1,000.
I guess the Crysis error I got about emulation software conflicting with the game, definitely had something to do with Riva Tuner.