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Me, myself & IT

CPUID enumerator and decoder


The command line (or console) utility program CPUPRINT.EXE for Microsoft® Windows® NT decodes and prints the information gathered from the processor’s CPUID and XGETBV instructions.
CPUPRINT.LOG and CPUPRINT.TXT show typical outputs.

CPUPRINT.EXE supports multiple specifications of (real and virtualized) x86 and x64 processors:

AMD64 Architecture Programmer’s Manual Volume 3: General Purpose and System Instructions
Revision 3.23, March 2017
AMD Geode LX Processors Data Book
February 2009
Intel® 64 and IA-32 Architectures Software Developer’s Manuals
Version 063, July 2017
Intel® Software ISA Extensions
April 2017
Intel® Itanium® Architecture Software Developer’s Manual
Revision 2.3, May 2010
Microsoft’s Hypervisor Top Level Functional Specification
Version 5.0b, April 2017 (which is but incomplete)
VIA C7-M Processor Datasheet
Revision 2.50, May 2008
VIA Eden Processor Datasheet
Revision 1.70, January 2006
VIA PadLock Programming Guide
August 2005
VIA Eden ESP Processor Datasheet
Revision 1.79, October 2004
VIA C3 Nehemiah Processor Datasheet
Revision 1.13, September 2004
VIA Antaur Processor Datasheet
July 2003

Implementation and build details

CPUPRINT.EXE is a pure Win32 binary executable, written from scratch in ANSI C without the MSVCRT libraries, built with the platform SDK for Windows Server 2003 R2 for use on Windows 2000 and newer versions of Windows NT as well as Windows PE.

CPUPRINT.EXE is available for the I386 alias x86 and AMD64 alias x64 processor architectures of Windows NT.
Note: on the IA64 processor architecture the CPUID instruction is supported in the emulated I386 alias x86 execution environment only!

Code authenticity and integrity

CPUPRINT.EXE is digitally signed using an X.509 certificate issued by WEB.DE TrustCenter E-Mail Certification Authority.
Serial number
MD5: 25 a0 d6 b0 bc 37 fe 49 42 d1 64 ca e6 7a f5 7f
SHA-1: 47 79 b5 28 f0 84 e6 ce f8 77 7b 62 dc c4 b3 1f fe de 07 14
Download and install the CA and root X.509 certificates of WEB.DE to validate and verify the digital signature.

Note: due to its counter signature alias timestamp the digital signature remains valid past the X.509 certificates expiration date!


If you miss anything here, have additions, comments, corrections, criticism or questions, want to give feedback, hints or tipps, report broken links, bugs, errors, inaccuracies, omissions, vulnerabilities or weaknesses, …:
don’t hesitate to contact me and feel free to ask, comment, criticise, flame, notify or report!

Use the X.509 certificate to send S/MIME encrypted mail.

Notes: I dislike HTML (and even weirder formats too) in email, I prefer to receive plain text.
I also expect to see a full (real) name as sender, not a nickname!
Emails in weird formats and without a proper sender name are likely to be discarded.
I abhor top posts and expect inline quotes in replies.

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Copyright © 1995–2017 • Stefan Kanthak • <‍skanthak‍@‍nexgo‍.‍de‍>