The official word from Intel is that Viiv systems must have a dual-core Intel Pentium D or Pentium Extreme Edition processor. Laptops must have a new Intel Core Duo CPU. The chipsets supported by Viiv are the new Intel 945/955/975 Express chipset family. An Intel PRO/1000 PM or Intel PRO/100 VE/VM network connection is also required.
You can find the official press release and the price list for all of Intel's CPUs on the Intel Web site, and Viiv-branded systems should be available for sale almost immediately.