As long as you make sure that you only compare those 3DMark results which have been measured on the same test system, this benchmark is a powerful instrument to determine graphics performance.
There is a huge performance impact if you switch from the default medium quality setting to the high quality setting in SiS's driver set. The Blade XP is not able to keep pace either in terms of image quality, or in its 3D performance.
The fill rate chart shows clearly the tremendous gap with respect to the NVIDIA MX400. As I already mentioned, an MX200 would have been much fairer competitor for this comparison, but we didn't have one available at the time these boards were made available to us, and we only had them for a short time.