Commanche Raisin Toast
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http://en.wikipedia.org/wiki/X86-64
unless you have certain types of server processors, if you have something that's intel or amd in your home PC right now it's an x86-x64 CPU that can run 32bit or 64bit versions of Windows, and is compatible with x86 instruction sets (as well as x64 so long as you're using a 64bit OS).
Since AMD64 and Intel 64 are substantially similar, many software and hardware products use one vendor-neutral term to indicate their compatibility with both implementations. AMD's original designation for this processor architecture, "x86-64", is still sometimes used for this purpose,[4] as is the variant "x86_64".[5][6] Other companies, such as Microsoft[8] and Sun Microsystems/Oracle Corporation,[7] use the contraction "x64" in marketing material.
unless you have certain types of server processors, if you have something that's intel or amd in your home PC right now it's an x86-x64 CPU that can run 32bit or 64bit versions of Windows, and is compatible with x86 instruction sets (as well as x64 so long as you're using a 64bit OS).