Intel has released the 400MHz Xeon in 512KB and 1MB versions. The chip is Intel's ploy for the high end of the market. The chipset behind the new chip is the 450NX chipset, which allows for more than 4GB of RAM and more than two-way machines to be built. But it's not cheap - US$1124 for the 512KB version, and US$2836 for the 1MB version. The 2MB version isn't yet available due to a flaw in the chipset.