The POWER3 is a microprocessor, designed and exclusively manufactured by IBM, that implemented the 64-bit version of the PowerPC instruction set architecture, including all of the optional instruction
POWER 3 microprocessor
Dual 375 MHz IBM POWER3-II processors on the CPU module of a RS/6000 44P 270.
The POWER4 is a microprocessor developed by International Business Machines that implemented the 64-bit PowerPC and PowerPC AS instruction set architectures. Released in 2001, the POWER4 succeeded the