3DMark06 is the latest version of 3DMark franchise, measuring Shader 3.0 (i.e., DirectX 9.0c) performance. We run this software on its default configuration (1280x1024 resolution with no image quality settings enabled) and besides the 3D score given by this program we also compared the results from its internal CPU benchmark.

3DMark06 Professional 1.1.0	Score	Difference
Core 2 Extreme "QX6950" (3.33 GHz)	11096	1.49%
Core 2 Extreme QX6850 (3 GHz)	10933
Core 2 Extreme QX6700 (2.66 GHz)	10727	1.92%
Core 2 Extreme X6800 (2.93 GHz)	9841	11.10%
Core 2 Duo E6750 (2.66 GHz)	9619	13.66%
Core 2 Duo E6700 (2.66 GHz)	9618	13.67%
Pentium 4 550 (3.4 GHz)	5713	91.37%

Here it is worth mentioning that Core 2 Extreme QX6850 achieved the same performance level of QX6700 and ”QX6950“.