Quake III Arena
Quake III is absolutely unplayable with the SiS graphics engine. Even at 640x480, the system was not even able to score 20 fps. Again, using the fast nVIDIA GeForce 2 Pro board boosts up the frame rates 5-10 times. VIA's KT133 is about 10% faster than the SiS730.
The performance differences between the SiS and the VIA chipset are much bigger using the high-end OpenGL benchmark SPECviewperf. It can also be used as a test for system stability, as it will most likely crash if a system component does not work reliably.
Design Review (DRV-07) runs about 35% faster on the VIA board than on the SiS730 - a clear tribute to the better memory performance of the KT133 chipset. All other applications definitely run faster on the KT133 board as well. If you plan to run such high-end programs, you should spend the higher price for a VIA KT133 chipset motherboard.