64- & 32-bit versions of Windows

What's the difference? Quoting from the Microsoft web site: "The terms 32-bit and 64-bit refer to the way a computer's processor (also called a CPU), handles information. The 64-bit version of Windows handles large amounts of random access memory (RAM) more effectively than a 32-bit system."

Most Windows-based computers sold since 2010 run the 64-bit version.

How do I determine what I'm running?

  1. Click the Start button on your desktop.
  2. Open the Control Panel (In Windows 11, type "Control Panel" into the search field at the top of the box. In Windows 10, it's in the menu that pops up under "Windows Accessories.")
  3. Click "System."
  4. The "About" window will open. In "Windows Specifications," you'll see if you have a 64-bit or a 32-bit operating system.