RS/6000 - technical definition

(RISC System/6000) The earlier generation and name of IBM's pSeries and p5 families of computation-intensive (scientific) workstations and servers. Introduced in 1990, the RS/6000 evolved into the pSeries in 2000 and the p5 in 2004.

The RS/6000 line was the first to use IBM's RISC-based POWER chip architecture, and both POWER and PowerPC CPUs have been used in various models. AIX (Unix) was the RS/6000's primary operating system. The RS/6000 originally supported the Micro Channel bus, but later switched to PCI. See pSeries, p5, POWER and PowerPC.