The two AGP cards perform nearly identical to each other in the 3D Mark fill rate test. The preceding situation is repeated by the PCI Express X1950 cards, but there still are light performance differences that are a result of the different clock frequencies. The pixel shader test heavily favors the Sapphire offering, most likely because of its large 512MB onboard memory.

The vertex shader and pixel shader tests show a general trend we have been seeing throughout the tests on this page. The Sapphire card performs the best due to its larger onboard memory size of 512MB. In the case of these tests the memory size makes a much larger difference than the interface.