32-bit or 64-bit: Which version of Windows 8 to install?

Both 32-bit and 64-bit installation discs are included in the Windows 8 package. 64-bit operating systems can handle large amounts of memory—typically 4 gigabytes (GB) of random access memory (RAM) or more—more efficiently than 32-bit operating systems. However, not all computers are 64-bit capable.

You'll probably need the 32-bit version, but to make sure right-click My Computer, and then click Properties.

• If you don't see "x64 Edition" listed, then you're running the 32-bit version of Windows XP. Step 1 of this tutorial will show you how to run Windows 8 Upgrade Advisor, which can let you know if your computer is capable of running the 64-bit version of Windows 8.
• If "x64 Edition" is listed under System, you're running the 64-bit version of Windows XP and can run the 64-bit version of Windows 8.