Lock if old.....
http://arstechnica.com/news.ars/post/20051007-5403.html
Scalable to seven blades in a 7U configuration, the Dual Cell-Based Blade is expected to provide up to 2.8 teraFLOPS of processing performance in a 7U form factor, and up to 16 teraFLOPS in a six-foot rack.
http://arstechnica.com/news.ars/post/20051007-5403.html