Performance in Semi-Synthetic Benchmarks
Futuremark 3DMark Vantage
We minimize the CPU influence by using the Extreme profile (1920x1200, 4x FSAA and anisotropic filtering). We also publish the results of the individual tests across all resolutions.
This is a rather resource-consuming benchmark, especially in the Extreme mode, so the CPU does not influence the result much. When it comes to the AMD solutions, replacing the Core i5-750 with the Core i7-975 EE leads to a performance growth of 7-8%, but may also provoke a small performance hit with some graphics card models. With the Nvidia cards, the frame rate does not grow up more than 2%.
We can see a similar picture in the individual tests. There is no notable effect even at low resolutions, let alone 2560x1600. In other words, a platform with a rather weak CPU can score quite well in 3DMark if you equip it with a top-end graphics card or a multi-GPU tandem.