MY TEST SYSTEM for Doom 3 (v 1.0)
 
CPU Athlon Xp 2100+    
Asus A7n8x Deluxe (REV 1.04)
2x256meg 2700 in Dual chan DDR config
MSI Nvidia 5900xt 128meg 8x AGP
Sound Blaster Audigy Gamer
Klipsch Promedia Ultra 5.1
 
Windows Xp Pro and Service Pack 1
Direct X v9.0c
Forceware 61.77
  Cpu Video Bios Quality: all options "on" Resolution Timedemo 1 Score  ( FPS Average )
             
Setup 1 2100+ @ Stock 1737mhz Stock 390c/700m Optimal 166mhz mem bus  64m AGP Aparture High  1024x768 Not Tested
( Not exactly the best performance )       Medium  1024x768 38.0
        Medium  800x600 44.1
        Low 640x480 45.9
             
Setup 2 2100+ @ Stock 1737mhz (OC) 410c/738m Aggressive 133mhz mem bus  128m AGP Aparture High  1024x768 40.5
( Slight Vidcard OC and bios settings )       Medium  1024x768 41.0
        Medium  800x600 47.2
        Low 640x480 48.1
             
Setup 3 2100+ @ 1804mhz (138 FSB) (OC) 504c/809m Aggressive 133mhz mem bus  128m AGP Aparture High  1024x768 43.7
( Max Overclock my system will allow )       Medium  1024x768 44.4
        Medium  800x600 Fail
        Low 640x480 50.1
        Custom Super Low .cfg 640x480 62.5
             
Setup 4 2100+ @ Stock 1737mhz (OC) 429c/770m Aggressive 133mhz mem bus  128m AGP Aparture Custom Super Low .cfg 1024x768 55.4
        Custom Super Low .cfg 800x600 59.5
( Best Multiplayer Speed / Stability )       Custom Super Low .cfg 640x480 60.4