MacMall has started selling Power Mac G5 Dual-2GHz systems from Virginia Tech"s Big Mac supercomputer cluster. Virginia Tech announced in January that it would be migrated the 1,100 Power Mac G5s to Xserve G5s. Mac users who would like to own a piece of what was the world"s third fastest supercomputer in 2003 can do so for $2,799, a $200 savings over the cost of a brand new dual-2GHz Power Mac G5, that also includes an extra 512MB of RAM (after rebate) but no internal modem.