“By using a few third party patches, a gamer has been able to run Doom 3 on an AMD XP 1800+, 256 MB of RAM, and two vintage Voodoo 2 PCI video cards. It looks like a completely different game, though it still is, apparently, very playable with 60 FPS. You MUST check out the screenshots.”
I couldn’t even get Quake III to run smooth at higher resolutions with my old Voodoo2, but Doom3!!!