How Do I Know if I Have XP 32-Bit or XP 64-Bit?

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How Do I Know if I Have XP 32-Bit or XP 64-Bit?
Microsoft released the retail version of Windows XP in 2001. (Justin Sullivan/Getty Images News/Getty Images)

Computers that use Windows XP 32-Bit or 64-Bit editions generally work the same across the board for many users. However, for power users -- gamers, video editors and professionals who conduct business on a PC -- knowing if the machine is equipped with faster 64-Bit capabilities is just as important as the processor or graphics card. Specifically, the Windows XP 64-Bit operating system can support many more sticks of random access memory (RAM) over the 32-Bit edition, which is limited to about four 1-gigabyte sticks. You can determine the edition of your Windows XP, without having to take it apart and count the memory sticks.

Skill level:
Moderately Easy


  1. 1

    Click the "Start" button in the bottom left corner of the desktop. Right-click on the "My Computer" icon from the Start menu. Select "Properties" to open a dialogue box.

  2. 2

    Click the "General" tab.

  3. 3

    Look for the section labelled "System." If the operating system information includes details about "x64 Edition," then the PC is running XP 64-Bit. If "x64 Edition" does not appear in that section, then the PC is running XP 32-Bit.

Tips and warnings

  • Although you might only have the XP 32-Bit version, you can make changes in the Windows operating system that might marginally to significantly increase the speed and performance of your PC.

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