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Definition: POWER CPU
(Performance Optimization With Enhanced RISC CPU) A family of RISC-based CPUs that use the Power Architecture from IBM. The heart of IBM's midrange computer line (see Power Systems), as well as the Watson supercomputer, POWER chips are also used by Google and others. They share a common instruction set with PowerPC CPUs, which were developed by IBM, Apple and Motorola. Following is the evolution of POWER chips. See RISC, Watson, PowerPC and OpenPOWER Foundation.
An Eight-Core POWER Chip
Word Tran-
Size sistors
Model Year (bits) (million)
POWER11 2025 64 30000
POWER10 2021 64 18000
POWER9 2017 64 8000
POWER8 2014 64 4200
POWER7+ 2012 64 2100
POWER7 2010 64 1200
POWER6 2007 64 790
POWER5 2004 64 276
POWER4+ 2002 64 180
POWER4 2001 64 174
POWER3-II 2000 64 23
POWER3 1998 64 15
POWER2 1993 32 15
POWER1 1990 32 0.8
In 2010, IBM debuted its POWER7 generation with up to eight processing cores. Providing four threads per core, a 32-chip POWER7 computer processes 1,024 simultaneous instruction streams. (Image courtesy of IBM.)