You probably told someone that a 64MB MX could beet a 32MB GTS. That will never happen, the GTS has a much more powerfull processor as well as twice the memory speed. On otherwise identicle cards, such as the Redeon 64MB SDR and Radeon 32MB DDR, the 32MB DDR card will always have higher average framerates, but I have seen them skip a frame or two at a time on extremely high quality apps, such as in 2001 where the framerate will drop from 70FPS to 13FPS for a fraction of a second before returning to full speed, which is still better than a constant 18FPS the SDR card with twice the ram might provide.
Back to you Tom...