3DMark06: Overall and CPU
3DMark06's built-in CPU test is a multi-threaded "gaming related" DirectX metric that's useful for comparing relative performance between similarly equipped systems. This test consists of two different 3D scenes that are generated with a software renderer, which is dependant on the host CPU's performance. This means that the calculations normally reserved for your 3D accelerator are instead sent to the central processor. The number of frames generated per second in each test are used to determine the final score.
According to 3DMark06, the 2.66GHz Core 2 Duo E6700 has an approximate 8% advantage over the overclocked FX-60, despite its 140MHz lower clock speed. We also ran the full 3DMark06 benchmark to see how this advantage in the CPU test affected the overall score...
The Core 2 Duo's 9% advantage in the CPU test translated into a 6% lead in the overall score. Although both test machines were equipped with the same graphics cards (X1900 XT CrossFire), the Core 2 Duo still pulls ahead here because CPU performance is factored into the final score.