When Microsoft unveils high-end versions of its Windows Server 2003 operating system next month it will include full support for Intel's 64bit Itanium processor but not for the 64bit capabilities of AMD's Opteron.
The 32bit versions of Windows Server 2003 will run on all x86 processors, including AMD's Opteron, which has both 32bit and 64bit modes. But the two high-end versions of the operating system due out on 24 April will only support Itanium.
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