The terms32-bitand64-bitrefer to the way a computer’s processor (also called a CPU), handles information. The 64-bit version ofWindowshandles large amounts of random access memory (RAM) more effectively than the 32-bit version. Follow the steps in the sections below to find out if your PC is running the 32-bit or 64-bit version ofWindowsand what edition ofWindowsis on your PC.
Computers runningWindowsXP
- ClickStart
, right-clickMy Computer, and then clickProperties.
- If “x64 Edition” is listed underSystem, youre running the 64-bit version ofWindowsXP.
- If you dont see “x64 Edition” listed underSystem, youre running the 32-bit version ofWindowsXP.
The edition ofWindowsXPyou’re running is displayed underSystemnear the top of the window.
Computers runningWindowsVistaorWindows7
- Click theStartbutton
, right-clickComputer, and then clickProperties.
- If “64-bit Operating System” is listed next toSystem type, youre running the 64-bit version ofWindowsVistaorWindows7.
- If “32-bit Operating System” is listed next toSystem type, youre running the 32-bit version ofWindowsVistaorWindows7.
The edition ofWindowsVistaorWindows7you’re running is displayed underWindowseditionnear the top of the window.
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