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 Basics

Power Macintosh System Overview - 1

 

Power Macintosh System Overview

 

PowerPC microprocessors are a family of processors built 

on reduced instruction-set computing (RISC) technology. 

RISC processors streamline the internal workings of 

computers. Whereas traditional (complex instruction-set 

computing, or CISC) processors contain a wide variety of 

instructions to handle many different tasks, RISC 

processors contain only those instructions that are used 

most often. When a complex instruction is needed, a RISC 

processor builds it from a combination of basic instructions.

RISC processors are designed to execute these basic 

instructions extremely quickly. The performance gains 

achieved by speeding up the most-used instructions more 

than compensate for the time spent creating less-used 

instructions.