Gun Metal 2	Source: Yeti Studio

Gun Metal 2 is one of the first benchmarks to take full advantage of DirectX 9 technology. According to Gun Metal 2, 2x AA is enabled by default on all videocards and the listed frame rates are average. Gun Metal 2 is not currently SLI compatible.

GunMetal 2
Game 1 1024x768	FPS	Ranking
MSI RX800XT-VTD256E	58.79
Gigabyte GV-RX80L256V	52.96
PowerColor X700 Pro	30.25
PowerColor Bravo X700	25.06
MSI NX6800GT-T2D256E	0
Albatron Trinity PC6600	26.19
Albatron Trinity PC6600U	36.09
Asus Extreme N6600TOP/TD/128M/A	39.23
MSI NX6600GT-TD128 AGP	44.08
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	47.7
Gigabyte GV-3D1 (SLI Mode 500/1120)	47.5
MSI NX6600GT-TD128E (Single)	46.49
MSI NX6600GT-TD128E (SLI Mode)	46.08
ATi Radeon X800 XL	52.97
ATi Radeon X800 XL (441/1113)	58.84
Game 2 1024x768	FPS	Ranking
MSI RX800XT-VTD256E	67.8
Gigabyte GV-RX80L256V	64.17
PowerColor X700 Pro	39.91
PowerColor Bravo X700	32.81
MSI NX6800GT-T2D256E	0
Albatron Trinity PC6600	34.6
Albatron Trinity PC6600U	45.81
Asus Extreme N6600TOP/TD/128M/A	48.94
MSI NX6600GT-TD128 AGP	52.06
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	55.83
Gigabyte GV-3D1 (SLI Mode 500/1120)	55.45
MSI NX6600GT-TD128E (Single)	54.89
MSI NX6600GT-TD128E (SLI Mode)	54.5
ATi Radeon X800 XL	63.78
ATi Radeon X800 XL (441/1113)	68.09
Game 1 1600x1200	FPS	Ranking
MSI RX800XT-VTD256E	36.92
Gigabyte GV-RX80L256V	33.71
PowerColor X700 Pro	17.4
PowerColor Bravo X700	14.03
MSI NX6800GT-T2D256E	0
Albatron Trinity PC6600	16.36
Albatron Trinity PC6600U	22.89
Asus Extreme N6600TOP/TD/128M/A	24.94
MSI NX6600GT-TD128 AGP	27.17
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	30.68
Gigabyte GV-3D1 (SLI Mode 500/1120)	30.66
MSI NX6600GT-TD128E (Single)	29.08
MSI NX6600GT-TD128E (SLI Mode)	28.96
ATi Radeon X800 XL	33.78
ATi Radeon X800 XL (441/1113)	38.06
Game 2 1600x1200	FPS	Ranking
MSI RX800XT-VTD256E	47.07
Gigabyte GV-RX80L256V	43.54
PowerColor X700 Pro	22.02
PowerColor Bravo X700	17.28
MSI NX6800GT-T2D256E	0
Albatron Trinity PC6600	20.15
Albatron Trinity PC6600U	29.11
Asus Extreme N6600TOP/TD/128M/A	32.01
MSI NX6600GT-TD128 AGP	36.03
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	39.81
Gigabyte GV-3D1 (SLI Mode 500/1120)	39.8
MSI NX6600GT-TD128E (Single)	38.14
MSI NX6600GT-TD128E (SLI Mode)	38.05
ATi Radeon X800 XL	43.48
ATi Radeon X800 XL (441/1113)	48.31

ATI usually does well in the GunMetal benchmark, and I'd say the ATi Radeon X800 XL performed quite well here, wouldn't you? Overclocking simply makes things sweeter.