ARM wasn’t the only processor type to be developed out of the nascent RISC architecture. IBM had been toying with RISC since the 1970s, and the company became known for a powerful CPU called the 801. By 1990 IBM’s RS/6000 workstation and server computers ran multi-chip Power microprocessors (Performance Optimized With Enhanced RISC), and two years later there were single-chip versions. The Power line (through seven iterations, as well as PowerPC) continued, and Apple helped make a name for the IBM microprocessor architecture within its own product branding scheme (PowerBook, etc.).