Tom's Hardware Guide has posted a review on the SiS 645DX Pentium 4 chipset

The Intel Pentium 4 has a problem: the Rambus platform, based on the Intel 850 chipset, has not enjoyed widespread penetration of the market. Only a few manufacturers have a motherboard with this chipset in their portfolios. Rather, the Pentium 4, fitted with an 845 board and SDRAM, is sold as a complete system by the major chain stores.

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