IMHO (consider this speculation with a little bit of reason behind it), to get 100 FPS @ 1600x1200 with 16AF/6AA in UT2K3 would require a CPU and memory above and beyond what is available. Even with something higher than an Intel HT 3.06/Barton 3000+, you'd probably have to overclock the hell out of the card beit 9700, 9800, or GFFX Ultra. The 6XAA implementation is still very GPU & GPU memory dependent (read: a huge hit). However, the overall framerate isn't solely dependent on GPU/VPU especially in the Unreal series/engine. CPU and mobo memory play a significant key - bot AI for instance. I could see you pulling closer on 16AF/4AA (Optimal Quality driver setting) or maybe even pulling it off with 8XAA/2XAF (High Quality driver setting). Both of them would still look incredibly good, but I think you'd have to drop to 1280x960, 1280x1024, or 1152x864 to use 4xaa/6xaa and still insure 100 FPS the majority of the time. More important than the card is the rig powering the card...what are your specs by the way?