How to Tell If You Computer Is 32 or 64-Bit

Written by neil edwards
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Typical computers can be described as either 32-bit or 64-bit, depending on the architecture used in the computer's processor. The number of bits usually corresponds to the size of the registers the processor uses to store data. Windows 7 is available in both 32-bit and 64-bit editions, and while the 32-bit version of Windows will run on a 64-bit system, the 64-bit version of Windows will not run on a 32-bit system. You can find out whether your computer is 32-bit or 64-bit using a built-in performance utility.

Skill level:
Moderately Easy


  1. 1

    Click your computer's "Start" button and type "Performance Information" (without quotes).

  2. 2

    Click the "Performance Information and Tools" entry in the "Control Panel" section of the results.

  3. 3

    Click "View and print detailed performance and system information" underneath the large icon indicating your computer's base score.

  4. 4

    Look for a "64-bit capable" entry in the "System" section of the report. If the "64-bit capable" entry is "No," your computer is a 32-bit computer. If it is "Yes" or the entry is not present, your computer is a 64-bit computer.

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