G4 should be plenty (MX or TI ?). If you are buying though, look into Radeons 9500+ as well - they support DirectX9, GF4 does not... a friend of my sold his GF4 4200 TI after two days and went online for the R9500 PRO

Gregoshi: I assume that your program does a better job then I did, but after cleaning the task manager of all the useless things, my #D Mark 2003 numbers went up only by 10-20 points.....