16 Terabytes of RAM on P750s. From http://en.wikipedia.org/wiki/Watson_(computer) http://en.wikipedia.org/wiki/Watson_(computer) "Watson is made up of a clust

16 Terabytes of RAM on P750s. From http://en.wikipedia.org/wiki/Watson_(computer) http://en.wikipedia.org/wiki/Watson_(computer) "Watson is made up of a cluster of ninety IBM Power 750 servers (plus additional I/O, network and cluster controller nodes in 10 racks) with a total of 2880 POWER7 processor cores and 16 Terabytes of RAM. Each Power 750 server uses a 3.5 GHz POWER7 eight core processor, with four threads per core. "