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My OS is 32-bit but I want to know if my hardware support 64-bit

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yes, it would work fine. – andrew cooke Mar 11 at 13:58
the first result of a search for "Q8200" is intel's data sheet - ark.intel.com/products/36547/…) - which includes "64 bit instruction set" – andrew cooke Mar 11 at 13:59
Run SecurAble from Steve Gibson at grc.com. – bbfugitive Mar 11 at 14:17
Your CPU supports the upgrade. Every Core 2 CPU is 64-bit capable. Whether the rest of your components do, we can't really know. (But if they support Windows 7, they'll support 64-bit Windows 7.) – David Schwartz Mar 11 at 15:03
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Anybody puzzled by the comments above should see superuser.com/questions/399482/… which was closed as a duplicate of this question. Looks like the comments from that question were automatically migrated to this one. – Harry Johnston Mar 11 at 21:35
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3 Answers

up vote 7 down vote accepted

Install and run Securable, it will tell you. If you get the 64 max bit length, then yes your processor supports it.

http://www.grc.com/securable.htm

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Both good answers, but I love Securable for its simplicity for the given task. And large font. ;) – Kara Marfia Feb 27 '11 at 18:09
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up vote 3 down vote

Install CPU-Z, run and check out results. If you are unsure, post results (screenshot) to your question. There is no good way in Windows for determining that, except if your Windows is already 64bit. Check out for example this question.

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up vote 3 down vote

From http://windows.microsoft.com/en-us/windows7/32-bit-and-64-bit-Windows-frequently-asked-questions paraphrased for Vista:

  1. Open Performance Information and Tools: Clicking the Start button and then click Control Panel. In the search box, type Performance Information and Tools, and then, in the list of results, click Performance Information and Tools
  2. Click View and print details
  3. In the System section, you can see whether or not you can run a 64-bit version of Windows under 64-bit capable
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