So testing my XP rig, I found a pair of 9800GT cards and swaped out my pair of 7900GTX cards for them, well of course FPS at 12x10 didn't really change, 3dmark06 score increased by 1000 to a single 9800GT and in SLI it increased another 300 points so I'd say bottleneck. Tested however at 1920x1080 vs my 7900GTX SLI and that is noticable, the scrore did increase about 4000 points and certain games like Most Wanted or FarCry are definatly more playable at 1080p 🤣