: For clean installations, Microsoft provides an ISO-9660 CD Image File which can be burned to a disc.
: You can find the standalone installer on the Microsoft Download Center . download service pack 3 for windows xp professional x64
: Unlike the 32-bit version, Windows XP Professional x64 was built from the Windows Server 2003 codebase. : For clean installations, Microsoft provides an ISO-9660
: Individual patches released after SP2 can still be found by searching the Microsoft Update Catalog . : Individual patches released after SP2 can still
: Many of the "new" features in the 32-bit SP3 were already integrated into the baseline or SP2 versions of the x64 edition because it was a more modern branch of the Windows NT family. How to Get the Latest Official Updates
: Because it shared a kernel with Server 2003, the x64 edition received updates and service packs alongside the server OS. Since Windows Server 2003 never received an SP3, neither did XP x64.
