3DMark06 simulates DirectX 9.0c (Shader 3.0) games and it also puts HDR (High Dynamic Range) into the equation to calculate its final score. So it simulates the most high-end games available today. Since we were comparing high-end cards, we ran this program in higher resolutions, as performance difference between high-end video cards is more expressive on such resolutions. We chose three resolutions, 1600x1200, 1920x1440 and 2048x1536. The results you check below. All video cards listed below were running with the default clock rates defined by the chip manufacturer.

3DMark06 Professional Edition 1.10 - 1600x1200	Score	Difference
Radeon HD 2900 XT (AMD)	9448
GeForce 8800 GTS 320 MB (MSI)	7504	25.91%
GeForce 7950 GX2 (XFX)	7208	31.08%
GeForce 7950 GT (Zogis)	4679	101.92%
Radeon X1950 Pro (PowerColor)	4504	109.77%
GeForce 7900 GT (XFX)	3937	139.98%
GeForce 7800 GTX (XFX)	3861	144.70%
GeForce 7800 GT (nVidia)	3311	185.35%

3DMark06 Professional Edition 1.10 - 1920x1440	Score	Difference
Radeon HD 2900 XT (AMD)	7982
GeForce 8800 GTS 320 MB (MSI)	6414	24.45%
GeForce 7950 GX2 (XFX)	6074	31.41%
GeForce 7950 GT (Zogis)	3876	105.93%
Radeon X1950 Pro (PowerColor)	3744	113.19%
GeForce 7900 GT (XFX)	3187	150.45%
GeForce 7800 GTX (XFX)	3117	156.08%
GeForce 7800 GT (nVidia)	2657	200.41%

3DMark06 Professional Edition 1.10 - 2048x1536	Score	Difference
Radeon HD 2900 XT (AMD)	7487
GeForce 8800 GTS 320 MB (MSI)	6035	24.06%
GeForce 7950 GX2 (XFX)	5686	31.67%
GeForce 7950 GT (Zogis)	3603	107.80%
Radeon X1950 Pro (PowerColor)	3427	118.47%
GeForce 7900 GT (XFX)	2949	153.88%
GeForce 7800 GTX (XFX)	2882	159.78%
GeForce 7800 GT (nVidia)	2450	205.59%