The NCSA has constructed a PlayStation 2 Linux cluster as a test bench for scientific computation on "toy" hardware. The cluster consists of 65 compute nodes, 4 user login and development nodes, and 1 prototype node for software installation tests. All the nodes run the Sony Linux distribution for PlayStation 2. The compute nodes fill a 24-inch rack; 5 shelves at 13 per shelf (see left); link Looking forward to see such solutions for the new upcoming Playstation 3.