POWER9 Processor User’s Manual


Date Added: May 11, 2018

Revision: 2.0

Download the POWER9 Processor User's Manual  


Level One

  • Technical Resource

Level Two

  • Specifications
  • Programming Guide

Level Three

  • Processor
  • Hardware Focus
  • Software Focus



The IBM® POWER9™ processor is a superscalar symmetric multiprocessor designed for use in servers and large-cluster systems. It uses 14 nm technology with 17 metal layers. The POWER9 processor supports direct-attach memory. It supports a maximum symmetric multiprocessing (SMP) size of two sockets and is targeted for scale-out workloads. This user’s manual describes the POWER9 processor and provides information about the registers, facilities, initialization, and use of the POWER9 processor. This document focuses primarily on the microprocessor core and the storage subsystem.