Newegg has the 1.7 ghtz barcelona for $239. It runs at 55w, which is about half of a b3 stepping q6600. But I haven't compared benchmarks. Hopefully, phenom will be out in early 08. The tyan board I quoted was one of the cheapest available. So you're looking at about $620 mimimum for the cpu, board, and 2 gigs of memory. Heatsink is extra. Msi has a single socket barcelona board due out soon, but I doubt if it's cheaper than the tyan.