BAPCo SYSmark 2000 - Windows 98
As you could see in the chart before, the new SiS730 chipset is not able to beat VIA's KT133. That also applies to the new KT133A chipset, as it has only be updated to support 133 MHz FSB (Athlon C models). SiS's 730 chipset already supports this processor bus by default.
The performance delta between the SiS and the VIA chipset is between 3 and 12% in Windows 98, depending on the application. Memory intensive applications like Bryce, Elastic Reality (3D modeling and rendering), Premiere (video editing) or Paradox (database software) do clearly suffer from SiS lower SDRAM bandwidth. However, you won't be able to get those scores using a Celeron 700 system.
BAPCo SYSmark 2000 - Windows 2000
The situation is quite the same in Windows 2000. Just the Power Point result is considerable higher using a VIA KT133 motherboard. You can also see both chipsets are almost on par in Photoshop 5.5, Corel Draw 9, Premiere 5.1 and Word 2000.