Big Ben — the first XT3 system to ship from Cray — comprises 2,090 processors with an overall peak performance of 10 teraflops or 10 trillion calculations/sec.

Big Ben, named after Ben Franklin, will serve as a leading-edge computing resource on the TeraGrid. Built by NSF over the past four years, TeraGrid is the world's largest, most comprehensive cyberinfrastructure for open scientific research. PSC is a joint effort of Carnegie Mellon University and the University of Pittsburgh together with the Westinghouse Electric Co.