Look Zagggon, it goes like this: For anything up to the GF4ti6400/Radeon 9000 level, go nVidia. Anything past that, go ATI. (Get Radeon 9x00, not GF FX; Get GF4Ti, not Radeon 8x00). If you want it for Doom III, though, you're gonna want a DX9 card, which means buy a Radeon 9x00 (but not 9000)