I just did a fresh install of XP SP2 with Bootcamp, installed the drivers, then immediately installed Doom 3 from the retail CD's. Started it up, set it to 1024x768 High Quality, quit Doom 3, restarted it, then did timedemo demo1.demo.

Let the timedemo run twice (to cache textures) and got 32.5fps the second time.

What scores are others seeing? This seems a little low, but is 13fps higher than doom 3 universal binary.

17" iMac w/ added 1gb ram (1.5gb total)