IBM POWER指令集架构是由IBM公司开发的一种精简指令集计算机(RISC)指令集架构(ISA)。该名称是“增强RISC性能优化”(Performance Optimization With Enhanced RISC)的首字母缩略字[1]

该示意图显示了不同的POWER,PowerPC和Power ISA的演变

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