Blue Smoke has a P4 chipset roundup. If you're looking for a P4 motherboard,
you'd better take a look at what they have to say!
Performance pundits criticized Intel the lack of P4 DDR support, and VIA
promptly responded with their legally controversial P4X266 chipset., the very
first DDR chipset. Intel finally bowed to market pressure, releasing the i845
DDR chipset several months later, and also granting use of the P4 bus to SiS,
who launched the SiS645 chipset, a DDR-333(!) chipset.