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Windows XP is a major release of Microsoft's Windows NT operating system. ... Memory: 1 GB: Free space: 6 GB: Media: CD-ROM drive or compatible: Display: Super VGA ...
Although the theoretical memory limit of a 64-bit computer is about 16 exabytes (17.1 billion gigabytes), Windows XP x64 is limited to 128 GB of physical memory and 16 terabytes of virtual memory. [4] Windows XP Professional x64 Edition uses the same kernel and code tree as Windows Server 2003 [5] and is serviced by the same service packs. [6]
Windows XP x64 can support much more memory; although the theoretical memory limit a 64-bit computer can address is about 16 exabytes, Windows XP x64 is limited to 128 GB of physical memory and 8 terabytes of virtual memory per process while the practical limit is usually the size of the pagefile.
Windows XP supports a larger system virtual address space—1.3 GB—of which the contiguous virtual address space that can be used by device drivers is 960 MB. The Windows XP Memory Manager is redesigned to consume less paged pool, allowing for more caching and greater availability of paged pool for any component that needs it.
However, "client" versions of 32-bit Windows (Windows XP SP2 and later, Windows Vista, Windows 7) limit physical address space to the first 4 GB for driver compatibility [16] even though these versions do run in PAE mode if NX support is enabled. Windows 8 and later releases will only run on processors which support PAE, in addition to NX and SSE2.
Some performance improvements could be seen in memory management and graphics display, but other parts of OS have equal or lower performance than Windows XP. On a low-end computer system, Windows XP outperformed Windows Vista in most tested areas. Windows OS network performance depends on the packet size and used protocol. However, in general ...
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The "non-server", or "client", x86 SKUs of Windows XP and later operate x86 processors in PAE mode by default when the CPU present implements the NX bit. Nevertheless, these operating systems do not permit addressing of physical memory above the 4 GiB address boundary.