Windows XP build 3790.0

Windows XP 64-Bit Edition build 3790 is the official RTM build of Windows XP 64-Bit Edition, Version 2003. This version adds support to the Itanium 2 processor and is based on the Windows Server 2003 codebase. Unlike x86 versions of Windows XP, it didn't have the Luna theme and it is slower in performance on x86 programs when compared to programs meant for the Itanium processor.