Microsoft will officially launch its 64-bit versions of Windows on Monday at its WinHEC conference in Seattle. The 64-bit version Windows XP Professional and Windows Server 2003 will feature support for both AMD and Intel 64-bit chips.
In a technical document discussing its 64-bit plans, Microsoft outlined some of the advantages of the new OSes, as compared with existing 32-bit versions. In terms of virtual-memory support, 64-bit Windows will handle 16 terabytes, as compared to 4 GB for 32-bit Windows. System cache size jumps from 1 GB to 1 TB, and paging-file size increases from 16 TB to 512 TB.