Anandtech has a 12 page review of SiS's latest offering for Intels Pentium4. This chipset offers DDR 333 support. Intel fans check this snippet: Until recently, most motherboard manufacturers have only been able to take a "wait and see" stance on the issue of 3rd party chipsets for the Pentium 4 platform. In a move very reminiscent of their earlier launch of the 735 chipset, SiS has stepped up to the plate and offered motherboard manufacturers a very attractive solution. The 645 chipset is SiS' answer to the P4X266; and after recently going to production many manufacturers are finding themselves instantly attracted to it as it is the first Pentium 4 chipset to receive an official license from Intel. As if legality wasn't enough, the SiS 645 officially supports DDR333 SDRAM; giving the Pentium 4 another 25% of what it likes the most: memory bandwidth.