September 20, 2013
Last Updated
September 20, 2013
Current Version
1.3 / Changelog

This Project Provides: Console application binaries and source code

The Value of the Model-Specific Register (MSR) Tools Project

MSR Tools project provides utilities to access the processor MSRs and CPU ID directly.

This project is composed of three different user space console applications.

  • rdmsr – read MSR from any CPU or all CPUs
  • wrmsr – write values to MSR on any CPU or all CPUs
  • cpuid – show identification and feature information of any CPU

Who It’s For

This project is for system developers, testers, debuggers, and other contributors creating or customizing any device based on IA processor.

Project Specifics

This is a small open source project distributed under the GPL v2 open source license. With a mature and established codebase containing about 700 lines of code begun in 2000 on, it is now housed on MSR Tools is written only in C.

About Intel Involvement

Intel is a major contributor to MSR Tools, enabling the ecosystem to customize and differentiate their products. This project is optimized through open source to for the Intel® Atom™ processors, Intel® Core™ processors, and any future Intel processors supporting MSR and CPUID.

Latest Downloads

Version Downloads Date Notes
msr-tools source code
20 Sep, 2013
Release Notes
See All Downloads