The 64-bit operating system has been long awaited by both Intel and especially Advanced Micro Devices, whose 64-bit Athlon and Opteron microprocessors have been forced to run on beta versions of the operating system. Linux distribution vendors, on the other hand, have offered 64-bit versions for months.More info at PC Mag
Microsoft releases 64-bit operating systems to manufacturers
Posted on Thursday, Mar 31 2005 @ 20:14 CEST by Thomas De Maesschalck
Microsoft today shipped 64-bit versions of Windows Server 2003 and Windows XP to manufacturers.