Windows Server 2008 build 5112 (with a build tag of 5112.0.winmain_beta1.050720-1600) is a Beta 1 build of Windows Server 2008. It was delivered to 10,000 beta testers on 2005-07-27 via the Windows Vista Technical Beta Program. This build marks the official beta 1, It was two SKUs: Standard and Standard Core. Standard Core is similar to Standard, except lacks a GUI and uses only command line.