HITAC S-810

The HITAC S-810 is a family of vector supercomputers developed, manufactured and marketed by Hitachi. The S-810, first announced in August 1982, was the second Japanese supercomputer, following the Fujitsu VP-200 (July 1982) but predating the NEC SX-2 (April 1983). The S-810 was Hitachi's first supercomputer, although the company had previously built a vector processor, the IAP.

The first system shipped was a top-end S-810/20 model, which was delivered to the University of Tokyo's Large Computer Center in October 1983. The S-810 was succeeded as Hitachi's top-end supercomputer by the HITAC S-820 announced in July 1987.