Navigation window top left, Hardware Specs, Videocards, then find yours. It will show a graph of oc results and the top scores for each bench.
The card you speak of is here:
hwbot.org - GeForce 8800 GTS 512 Mb specifications and performance analysis.
But for more popular cards like that you are going to need cherry hardware, vmods, CPU/GPU pots, and LN2 to take out any WRs. However you can still get plenty of points just getting the best score you can. :)