In AGP there is not a low budget card worth buying as you are already at about what $100 gets you in AGP. (6600GT, 6800XT). The 7600GS isn't enough of a jump to bother IMO, so you are basically looking at over $140. I wouldn't worry about a P4 2.6C being a bottleneck, especially OC'ed to 3.0GHz+. Best AGP card is a X1950 pro for $240-300. Next best is a huge step down in the 7800GS/7600GT/X850XT range. These cards are about $180+ right now. The X1650XT is due out in AGP shortly and is about equal to those others. It may end up being in the $150-170 range. Cheapest I'd go for is a X850 pro, X800XL, 6800GT( used).