Determine if your PC can run a 64-bit or 32-bit version of Windows
The terms 32-bit and 64-bit refer to the way a PC's processor (also called a CPU), handles info. The 64-bit version of Windows handles large amounts of random access memory (RAM) more effectively than a 32-bit version. To install a 64-bit version of Windows, you need a CPU that's capable of running a 64-bit version.
To find out if your PC running Windows Vista is 64-bit capable
1. Open Performance Information and Tools by clicking the Start button , and then clicking Control Panel. In the search box, type Performance Information and Tools, and then, in the list of results, click Performance Information and Tools. To see whether a PC running Windows Vista is capable of running a 64-bit version of Windows, do the following:
2. Click View and print details.
3. In the System section, you can see what type of operating system you're currently running under System type, and whether or not you can run a 64-bit version of Windows under 64-bit capable. (If your computer is already running a 64-bit version of Windows, you won't see the 64-bit capable listing.)
To find out if your PC running Windows XP is 64-bit capable
1. Click Start.
2. Right-click My Computer, and then click Properties.
- If "x64 Edition" is listed under System, your processor is capable of running a 64-bit version of Windows.