Doom 3	Source: id Software

Doom 3 is the most advanced OpenGL game to date. It takes advantage of the latest videocard technology and pushes the processing power of the CPU to its absolute limits. 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.

Doom3
LQ 640x480	FPS	Ranking
MSI RX800XT-VTD256E	113.8
Gigabyte GV-RX80L256V	128.1
PowerColor X700 Pro	103.1
MSI NX6800GT-T2D256E	120.1
Albatron Trinity PC6600	97.6
Albatron Trinity PC6600U	111.4
Asus Extreme N6600TOP/TD/128M/A	114.3
MSI NX6600GT-TD128 AGP	112.5
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	113.3
Gigabyte GV-3D1 (SLI Mode 500/1120)	108.8
MSI NX6600GT-TD128E (Single)	114.6
MSI NX6600GT-TD128E (SLI Mode)	109
PowerColor Bravo X700	90.6
PowerColor Bravo X700 (461/266)	93.7
LQ 1024x768	FPS	Ranking
MSI RX800XT-VTD256E	105.4
Gigabyte GV-RX80L256V	100.8
PowerColor X700 Pro	57.2
MSI NX6800GT-T2D256E	110.6
Albatron Trinity PC6600	55.7
Albatron Trinity PC6600U	74.9
Asus Extreme N6600TOP/TD/128M/A	78.9
MSI NX6600GT-TD128 AGP	87.4
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	92.6
Gigabyte GV-3D1 (SLI Mode 500/1120)	107.4
MSI NX6600GT-TD128E (Single)	90.8
MSI NX6600GT-TD128E (SLI Mode)	107.3
PowerColor Bravo X700	44.1
PowerColor Bravo X700 (461/266)	45.8
HQ 1024x768	FPS	Ranking
MSI RX800XT-VTD256E	102.8
Gigabyte GV-RX80L256V	97.8
PowerColor X700 Pro	54.3
MSI NX6800GT-T2D256E	107.1
Albatron Trinity PC6600	52.5
Albatron Trinity PC6600U	71.3
Asus Extreme N6600TOP/TD/128M/A	75.7
MSI NX6600GT-TD128 AGP	84.3
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	90.1
Gigabyte GV-3D1 (SLI Mode 500/1120)	106.8
MSI NX6600GT-TD128E (Single)	87.9
MSI NX6600GT-TD128E (SLI Mode)	106.4
PowerColor Bravo X700	41.8
PowerColor Bravo X700 (461/266)	43.3
HQ1600x1200	FPS	Ranking
MSI RX800XT-VTD256E	58.4
Gigabyte GV-RX80L256V	50.1
PowerColor X700 Pro	24.7
MSI NX6800GT-T2D256E	66.9
Albatron Trinity PC6600	26
Albatron Trinity PC6600U	35.9
Asus Extreme N6600TOP/TD/128M/A	37.9
MSI NX6600GT-TD128 AGP	43.7
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	47.3
Gigabyte GV-3D1 (SLI Mode 500/1120)	79.3
MSI NX6600GT-TD128E (Single)	45.9
MSI NX6600GT-TD128E (SLI Mode)	74.4
PowerColor Bravo X700	18.8
PowerColor Bravo X700 (461/266)	19.5

Doom 3 is a bit too much for the X700 ore and the Powercolor Bravo. At low quality at 640x480 the game is playable, and marginally so at HQ 1024x768, but anything more is too much.