COLSA, a US Army contractor based in Huntsville, Alabama, today announced the purchase of 1,566 Xserve G5s to build a new supercomputer expected to be one of the fastest in the world. The supercomputer, named “MACH 5,” is expected to deliver a peak performance capability of more than 25 TFlops/second at a cost of US$5.8 million and will be used to model the complex aero-thermodynamics of hypersonic flight for the US Army.