Confused about my CPU architecture, x64 x86 ?

[cloudymind]

I have a Core 2 duo 6400 running on WinXP.
Recently I am thinking about upgrading my OP. But following microsoft's checkup,
http://www.windowsmarketplace.....aspx?ctId=396&tabid=1">Here</a>, it says my processor_architecture is x86 ???

1) Confirm that your PC is capable of running 64-bit software.
1.Open the "System Properties" window
a.If your Start menu is configured for Classic Start menu, right-click the My Computer icon on your desktop, and click Properties.
b.If your Start menu is the Windows default Start menu, click the Start button, then right-click the My Computer icon in your Start menu, and click Properties.
2.Click the Advanced tab.
3.Click Environment Variables.
4.In the "System variables" list at the bottom of the Environment Variables window, look for a variable called "PROCESSOR_ARCHITECTURE". If your PC has a 32-bit processor, this variable will have a value of "x86". If it has a 64-bit processor this variable will have a value of "x64".

My 6400 is 32bit ? Is this because I am running XP so the OP only recognizes 32-bit type ? I am confused.

Any help will be appreciated.

 

[Lord Banshee]

you are correct, you are running a 32-bit OS so it sees a 32-bit CPU. Core2Duo's are all 64-bit/32-bit CPU's

 

[cloudymind]

Thanks a lot for the reply.