 Later that year, the cluster's third iteration was built from Dell PowerEdge 1955 servers; it was composed of 5200 processors and 10.4 TB memory.Lonestar 3 entered the Top500 list in November 2006 as the 12th fastest supercomputer, with 55.5 TFlops peak.In April 2011, TACC announced another upgrade of the Lonestar cluster.