Virginia Tech (2003) built a supercomputer that “consists of 1100 Apple Xserve G5s, each with 4 GB RAM, and was previously upgraded from Power Mac G5s to Xserves.” Video after the jump.
The G5s will be clustered using Infiniband to form a 1100-node supercomputer delivering over 10 Teraflops of performance… estimated to be one of the top five fastest in the world
[via ThinkSecret – MacRumors]