Std Speed,
Going from the 9600 to a 9800 Pro would give you a very good boost in performance for playing games.
Your machine will run PC-3200 but you want to set in the BIOS for the CPU to RAM Ratio to be set to 1:1. You get the best performance when your RAM and CPU run at the same FSB Speed.
Take Care,
Richard
P.S. The Radeon 9800Pro 128Mb is the best bang for the buck out there.
