Microsoft plans to offer long-awaited 64-bit versions of its Windows operating system at the beginning of April, while the server version would come at the end of the month. Last month, Microsoft released a second, near-final “release candidate” version of the operating system. The 64-bit versions of Windows XP and Windows Server 2003 have been a long time coming, particularly for chipmaker AMD, which has offered such chips for roughly two years in the server market and 18 months in the desktop PC market.

Microsoft plans to offer long-awaited 64-bit versions of its Windows operating system at the beginning of April, while the server version would come at the end of the month. Last month, Microsoft released a second, near-final “release candidate” version of the operating system. The 64-bit versions of Windows XP and Windows Server 2003 have been a long time coming, particularly for chipmaker AMD, which has offered such chips for roughly two years in the server market and 18 months in the desktop PC market.