How to determine if you have a 64-bit or 32-bit CPU
Determine if using 32-bit or 64-bit version of Windows
If you want to determine if the version of Windows on your computer is 32-bit or 64-bit, follow the steps below for your version of Windows.
Note:Keep in mind that a 64-bit processor can be using either a 32-bit or 64-bit version of Windows and that a 32-bit processor can only use a 32-bit version of Windows.
Determine if Windows Vista, 7, 8 and 10 is 32-bit or 64-bit
- Press and Hold the Windows Key and the Pause key
- In the System window, next to System type it will list 32-bit Operating System for a 32-bit version of Windows, and 64-bit Operating System if you’re running the 64-bit version. Below is a picture and an example of this window.
Determine if Windows XP is 32-bit or 64-bit
- Press and Hold the Windows Key and the Pause key or open the System icon in
the Control Panel.
- In the General tab of the System Properties window, if it has the text Windows XP, the computer is running the 32-bit version of Windows XP. If it has the text Windows XP Professional x64 Edition, the computer is running the 64-bit version of Windows XP.
Determine if Windows 2000 and prior is 32-bit or 64-bit
Windows operating systems, from Windows 95 to Windows 2000, are all 32-bit. There are no 64-bit versions of these operating systems.