Windows XP Media Center Edition

Windows XP Media Center Edition extends many of the enhanced multimedia capabilities available in Windows XP Professional. Media Center Edition is a superset of Windows XP that incorporates a fully functional Windows XP computing environment and enhances the computer for home entertainment. Media Center Edition is not available for retail sale; instead, it is available only with the purchase of a new Media Center PC from a Microsoft computer manufacturer partner.

Windows XP Tablet PC Edition offers enhanced computing capabilities in a mobile computing environment. It runs only on a Tablet PC and is not available for retail sale. Tablet PC Edition uses Windows XP Professional as a base, making it possible to run Windows XP-compatible applications.

This Windows XP 64-bit edition was designed to address the needs of high-performance computing applications. It features:

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  Support for up to 16GB of RAM and 16TB of virtual memory
  
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  Integration for both 64-bit and 32-bit applications, allowing you to run 32-bit applications designed for other versions of Windows XP
  
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  Support for the same programming model as the 32-bit Windows environment, allowing programmers to develop applications for Windows XP Professional x64 Edition without learning a new environment
  

Windows Server 2003 was released as an upgrade to Windows 2000 Server. Additional features in Windows Server 2003 include:

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  Increased dependability
  
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  Built-in support for web services
  
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  Common language runtime reduces the number of bugs and security holes caused by common programming mistakes
  
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  Increased security for Internet connections
  
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  Support for both 32-bit and 64-bit processors (depending on the version)
  
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  Symmetric multi-processing support for up to 64 processors
  
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  Support for up to 512GB of RAM
  

Released in 2007, Windows Vista is not an upgrade to Windows XP, but an entirely new operating system. Some of the many new features of Vista include:

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  Updated graphical user interface called Windows Aero
  
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  Improved search
  
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  Redesigned networking, audio, print, and display systems
  
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  New multimedia creation tools
  
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  Improvements in peer-to-peer technology
  
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  Security enhancements
  

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  Windows 2000 and XP Professional for users of Windows 95, 98, or Me