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We talk a lot about Windows 32 and 64-bit around here. If you’ve purchased a PC from the shelf, there’s every chance you don’t know whether it’s running 32 or 64-bit Windows. Most computers sold today come with 64-bit Windows installed (needed to utilize >3GB RAM, which is now commonplace in standard PCs); here’s how you can check for yourself:

Check to See if You’re Using Windows 32 or 64-bit

Click the Start button, right click Computer, and click Properties:

The system properties dialog box will now show. Look for the information that states if you’re running 32 or 64 bit:

Windows Vista/7

Windows XP

Note: Unless you see “64-bit” listed, you’re running 32-bit:

Note: Here are some of the differences between 32 and 64-bit Windows.

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Rich is the owner and creator of Windows Guides; he spends his time breaking things on his PC so he can write how-to guides to fix them.

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