POWER is a RISC instruction set architecture designed by IBM. The name is a backronym for Performance Optimization With Enhanced RISC. The POWER architecture was used to develop the PowerPC architecture, used in later Apple Macintosh computers, some IBM workstations, as well as a number of embedded applications.

POWER is also the name of a series of microprocessors that implements the instruction set architecture. The POWER series microprocessors are used as the main CPU in many of IBM's servers, minicomputers, workstations, and supercomputers. The POWER3 and subsequent microprocessors in the POWER series all implement the full 64-bit PowerPC architecture. The POWER3 and above don't implement any of the old POWER instructions that were removed from the ISA when the PowerPC ISA came out or any of the POWER2 extensions such as lfq or stfq.

IBM also is encouraging other developers and manufacturers to use the POWER architecture or any other derivative of it through the Power.org community; this includes all of PowerPC and Cell.

More on [ IBM POWER ]

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