Microsoft Windows XP Professional x64 Edition SP2 (OEM)

Windows XP Professional x64 Edition SP2 from Microsoft is the industry-standard 64-bit PC operating system. Featuring the familiar and ubiquitous Windows GUI, the OS fully supports 64-bit hardware. It supports up to 16 TB of virtual memory, a 512 TB paging file, 128 GB of paged pool, 128 GB of non-paged pool, and 1 TB of system cache. It is an ideal operating system choice for users with highly technical and business application requirements.