ID Software Doom 3 1.3	Source: id Software

At its highest setting, Ultra quality, texture sizes pass the 500MB mark which means even tomorrow's videocards will have a hard time running everything. The frame rates in the game itself are locked at 60 fps so anything above that point is wasted. Each test is run three times and with the third run being recorded.

ID Software Doom 3 1.3
HQ 1024x768	FPS	Ranking
Asus EAX1900XTX 2DHTV/512M/A	170.3
Asus EAX1950PRO/HTDP/256M/A	143.2
MSI NX7950GX2-T2D1GE	172.4
MSI NX7900GTX-T2D512E	174.9
Gigabyte GV-NX76T256D-RH	134.7
Biostar Sigma-Gate GeForce 7600GS	118.9
MSI NX8800GTX-T2D768E-HD	185.3
MSI NX8800GTX-T2D768E-HD 665/1066	184.3
HQ1600x1200	FPS	Ranking
Asus EAX1900XTX 2DHTV/512M/A	116.7
Asus EAX1950PRO/HTDP/256M/A	81.9
MSI NX7950GX2-T2D1GE	162.1
MSI NX7900GTX-T2D512E	134.5
Gigabyte GV-NX76T256D-RH	71.8
Biostar Sigma-Gate GeForce 7600GS	60.8
MSI NX8800GTX-T2D768E-HD	175.1
MSI NX8800GTX-T2D768E-HD 665/1066	180.8
UQ 1024x768	FPS	Ranking
Asus EAX1900XTX 2DHTV/512M/A	164.4
Asus EAX1950PRO/HTDP/256M/A	134.1
MSI NX7950GX2-T2D1GE	170.3
MSI NX7900GTX-T2D512E	174.5
Gigabyte GV-NX76T256D-RH	127.2
Biostar Sigma-Gate GeForce 7600GS	115.9
MSI NX8800GTX-T2D768E-HD	184.5
MSI NX8800GTX-T2D768E-HD 665/1066	184.4
UQ 1600x1200	FPS	Ranking
Asus EAX1900XTX 2DHTV/512M/A	110.9
Asus EAX1950PRO/HTDP/256M/A	76.3
MSI NX7950GX2-T2D1GE	160.1
MSI NX7900GTX-T2D512E	130.9
Gigabyte GV-NX76T256D-RH	68.6
Biostar Sigma-Gate GeForce 7600GS	59.9
MSI NX8800GTX-T2D768E-HD	174.9
MSI NX8800GTX-T2D768E-HD 665/1066	180.2

If your monitor (CRT or LCD) does not support high resolutions (1600x1200) much of the MSI NX8800GTX-T2D768E-HD's power is going to waste. Overclocking boosts overall framerate slightly, although not enough to really notice. In every test, frame rates are already silky smooth.