AquaMark 2.3	Source: Massive Development

AquaMark is another DirectX 8 benchmark. Vertex shaders provide a huge image quality and speed boost for compatible cards. The Default test has 24 MB worth of textures.

AquaMark
1027x768	FPS	Ranking
MSI RX800XT-VTD256E	143.3
PowerColor X700 Pro	115.2
Albatron Trinity PC6600	92.5
Albatron Trinity PC6600U	119.8
MSI NX6600GT-TD128 AGP	123.2
Albatron Trinity GeForce 6800GT AGP	124.5
Gigabyte GV-NX66T128D	131.6
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 NX6600GT-TD128E (SLI Mode 563/1130)	131.1
1280x1024	FPS	Ranking
MSI RX800XT-VTD256E	131.8
PowerColor X700 Pro	81.1
Albatron Trinity PC6600	61.4
Albatron Trinity PC6600U	84.1
MSI NX6600GT-TD128 AGP	93.7
Albatron Trinity GeForce 6800GT AGP	96.1
Gigabyte GV-NX66T128D	104.7
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 NX6600GT-TD128E (SLI Mode 563/1130)	122.7
1600x1200	FPS	Ranking
MSI RX800XT-VTD256E	115.4
PowerColor X700 Pro	55.7
Albatron Trinity PC6600	45.3
Albatron Trinity PC6600U	60.8
MSI NX6600GT-TD128 AGP	70.2
Albatron Trinity GeForce 6800GT AGP	71.7
Gigabyte GV-NX66T128D	77.2
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 NX6600GT-TD128E (SLI Mode 563/1130)	114.4

At low resolutions SLI doesn't make much of a difference, but at 1600x1200 SLI really starts to take off! The two MSI NX6600GT-TD128Es are able to perform just as fast as the high end MSI Radeon X800XT videocard!