Been doing some testing.... don't think it is the AGP speed, but my sad old processor ( p4 2.53 Northwood ).
I DOOM3 i get 46fps at 1024x768 2xAA 8xAF High Quality in timedemo. Ay 800x600 with same settings i get 47fps....
Overclocking CPU to 2.8G i get a 5fps uplift... nothing dramatic.
Ohh Well... roll on 6 months... should then have enough monies to upgrade MB/CPU/PSU.... Anybody recommend a good case ?