Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Does anyone know how I can find this information? System properties does not specify the version, winver does not specify this either.

share|improve this question

Go to Control Panel > System and Maintenance > System

And Look at the 4th row under system

Check windows architecture

share|improve this answer

You can see this in the system control panel applet - I see an entry "system type" there which mentions "32-bit Operating System"

share|improve this answer
In Vista and later it's more easily visible. It may be that 64-bit XP also shows it. At least 64-bit Server 2k3 does. – Joey Oct 15 '09 at 7:31

Some command-line ways to get to that information:

You can take a look at the PROCESSOR_ARCHITECTURE environment variable. This will be "x86" for a 32-bit OS and AMD64 for x86_64 (dunno the value for Itanium right now, but probably "IA64" or similar):

> echo %processor_architecture%

> echo %processor_architecture%

This even works with a 32-bit OS on a 64-bit-capable CPU.

Another way—though not in ancient versions of Windows—would be to use WMI:

> wmic os get OSArchitecture

> wmic os get OSArchitecture
share|improve this answer

I found a link that successfully identifies the differences at Microsoft Support:

  • Click Start, type system in the Start Search box, and then click system in the Programs list.
  • The operating system is displayed as follows:
    • For a 64-bit version operating system: 64-bit Operating System appears for the System type under System.
    • For a 32-bit version operating system: 32-bit Operating System appears for the System type under System.
share|improve this answer
@CaptainCasey +1 nice find – alex Oct 15 '09 at 6:36

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.