Yesterday my senior asked me what is difference between Windows 2008 and Windows 2008 R2 servers.

Thought to share answer with you:

  • Windows Server 2008 is the same codebase bits as Vista. It is available in two flavors 32 bit and 64 bit versions.
  • Windows Server 2008 R2 is the same codebase bits as Windows 7 x64. It is only available in the 64 bit version.

Comparison..

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