For this resolution the 8800GT is fine IMO...I play Crysis with everything on high at 1280x1024 and it runs smooth as butter. However, if you really want an upgrade, I would go for the GTX 260 core 216. I actually may be getting one soon from a friend for building a rig for him. That card would DESTROY anything at your resolution, and it has enough VRAM to keep up with higher res in case you ever decided to upgrade your monitor.