Re: Windows 8.0?
Microsoft Windows XP [Version 5.1.2600]
Windows 2K is 5.0
XP [32 bit] is 5.1.x
Windows [Server] 2003 R2 SP2 is version 5.2.x
But confusion ... 64 bit XP is 5.2.x also
Microsoft Windows XP [Version 5.1.2600] (Pro 32-bit SP3)
Microsoft Windows [Version 5.2.3790] (Windows XP 64-bit) [x86 or Itanium? Both exist and are incompatible. Itanium version removed 2005]
Microsoft Windows [Version 5.2.3790] (Windows 2003 SP2)
Microsoft Windows [Version 5.2.3790] (Windows 2003 R2 SP2)
The 64 bit XP is based on Server 2003, hence the version number.
Each of these last three are delivered as separate OS's; as separate products (you had to pay to go from 2003 to 2003 R2), and yet they have the same major, minor, build number?
Vista, Win7, Server 2008 and Win are all 6,x versions