In order to run DOOM 3 you need 64MB and that is just to get it running. Quality low and framerates very low...almost unplayable.
To run at Ultra Quality you need a 512MB graphic card. 512MB!!! What!?!
I have a X800 Pro 256DDR3 and I can only see High Quality, Ultra Quality settings result in 7-10FPS. That sucks!
So, NO to your question...I can see 128MB being the standard.
Soyo Dragon Ultra Platinum Edition powered by a P4 3.06GHz w/HT @ 533FSB
ATI Radeon X800Pro 256DDR <---Yeah!!! I finally got it!!!
1024MB PC3200, Creative Audigy LS, 2 x 40GB = 80GB RAID 0
Windows XP Pro, DOOM 3, CS, UT2004, BF1942 RtoR, CNC Generals
Finished Half-Life 2!!!!!!!!!!