after about 45 mintues of doom 3, I have come to this conclusion as far as hard ware goes...
I have the game set to medium quality @ 1024 x 768. I have a AMD 2700+, creative 5.1 platinum, 1 gb pc333 ram, and a ATI 9800 pro. I had no special settings (i.e. anti aliasing) enabled.
Using fraps, I had an average of 35 fps, though in areas where there were more than a few AI around, I would drop down to around 20. During scenes where the environment becaome complex, I would drop to a low of 15, where my lowest during FPS during hte game was 13. Over all, I hovered between 25-45 fps which is playable. Anyway, just wanted to give you guys some insight for the 3rd. thanks.