Below is a list of Windows Server names, code names, release dates and minimum specifications:

Windows Server Public Name Codename Release Date Kernal Version Min CPU Max Cores Min RAM Min Disk
Windows for Workgroups 3.1 Snowball Nov 1993 3.11 25 MHz 1 3 MB 10.5 MB
Windows NT 3.1 Advanced Server Razzle NT OS2 Aug 1993 NT 3.10 25 MHz 2 16 MB 90 MB
Windows NT 3.5 Server Daytona Sep 1994 NT 3.5 25 MHz 2 16 MB 90 MB
Windows NT 3.51Server Daytona Jun 1995 NT 3.51 25 MHz 2 16 MB 90 MB
Windows NT 4.0 Server Cairo Jul 1996 NT 4.0 33 MHz 4 32 MB 150 MB
Windows 2000 Server Janus Feb 2000 NT 5.0 133 MHz 32 128MB l,000 MB
Windows Server 2003 Whistler Server Apr 2003 NT 5.2 400 MHz 64 512 MB l,500 MB
Windows Server 2003 R2 R2 Mar 2006 NT 5.2 400 MHz 64 512 MB l,500 MB
Windows Server 2008 Longhorn Server Feb 2008 NT 6.0 l,000 MHz 64 512 MB 20,000 MB
Windows Server 2008R2 Server 7 Oct 2009 NT 6.1 l,400 MHz 64 512 MB 32,000 MB
Windows Server 2012 Server 8 Sep 2012 NT 6.2 l,400 MHz 320 512 MB 32,000 MB
Windows Server 2012 R2 Blue Oct 2013 NT 6.3* l,400 MHz 320 512 MB 32,000 MB
Windows Server 2016 Redstone Sep 2016 NT 10.0* 1400 Mhz 512 512 MB 32,000 MB
Windows Server 2016 R2 Redstone 2 Fall 2018 NT 1x.x* 1400 Mhz 512 512 MB 32,000 MB
* For applications that have been manifested for Windows 8.1 or Windows 10.
Applications not manifested for Windows 8.1 or Windows 10 will return the Windows 8 OS version value (6.2).

FUN FACT: “NT” stood for “New Technology” so you can see why Microsoft had to change the NT branding to something actually new.

You may find the following links useful if you want more details:


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