November 19th, 2003

How can I tell if I have the 64-bit edition of Windows?

Raymond Chen
Raymond Chen

Answer: Your wallet is empty. Seriously, there is no way you bought an Itanium by mistake. They are expensive machines: The entry-level workstation available from HP (who co-developed the Itanium with Intel) goes for over $3000 and the entry-level server is over $13,000. And in addition to paying for the computer itself, you probably had to install a custom air conditioning system for your building to keep it cool.

If you still aren’t sure whether you have one, go to Help.About in Explorer. At the top of the About box, it will say “Windows XP 64-Bit Edition” if you have it.

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Old New Thing
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Author

Raymond Chen

Raymond has been involved in the evolution of Windows for more than 30 years. In 2003, he began a Web site known as The Old New Thing which has grown in popularity far beyond his wildest imagination, a development which still gives him the heebie-jeebies. The Web site spawned a book, coincidentally also titled The Old New Thing (Addison Wesley 2007). He occasionally appears on the Windows Dev Docs Twitter account to tell stories which convey no useful information.

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