AquaMark
1027x768	FPS	Ranking
MSI RX800XT-VTD256E	143.3
Gigabyte GV-RX80L256V	142.8
PowerColor X700 Pro	115.2
Albatron Trinity PC6600	92.5
Albatron Trinity PC6600U	119.8
MSI NX6600GT-TD128 AGP	123.2
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	131
Gigabyte GV-3D1 (SLI Mode 500/1120)	130
MSI NX6600GT-TD128E (Single)	134.1
MSI NX6600GT-TD128E (SLI Mode)	130.5
MSI NX6800GT-T2D256E	147.5
MSI NX6800GT-T2D256E (416/1162)	152.1
1280x1024	FPS	Ranking
MSI RX800XT-VTD256E	131.8
Gigabyte GV-RX80L256V	127.4
PowerColor X700 Pro	81.1
Albatron Trinity PC6600	61.4
Albatron Trinity PC6600U	84.1
MSI NX6600GT-TD128 AGP	93.7
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	102.7
Gigabyte GV-3D1 (SLI Mode 500/1120)	123.3
MSI NX6600GT-TD128E (Single)	104.5
MSI NX6600GT-TD128E (SLI Mode)	120
MSI NX6800GT-T2D256E	134.1
MSI NX6800GT-T2D256E (416/1162)	139.9
1600x1200	FPS	Ranking
MSI RX800XT-VTD256E	115.4
Gigabyte GV-RX80L256V	103.2
PowerColor X700 Pro	55.7
Albatron Trinity PC6600	45.3
Albatron Trinity PC6600U	60.8
MSI NX6600GT-TD128 AGP	70.2
Gigabyte GV-3D1 (Single GPU Mode 500/1120)	78.3
Gigabyte GV-3D1 (SLI Mode 500/1120)	114
MSI NX6600GT-TD128E (Single)	77.2
MSI NX6600GT-TD128E (SLI Mode)	112.7
MSI NX6800GT-T2D256E	112
MSI NX6800GT-T2D256E (416/1162)	125.4

The GeForce 6600GT SLI setup gives the MSI NX6800GT-T2D256E a good run for its money. The NX6800GT is consistently at the top in AquaMark, even more so when overclocked.