The following is a useful summary table that outlines the physical memory limits found with Microsoft Windows Server 2012 (W2K12). Just as a reminder Windows Server 2012 is only available as an X64 distribution.
Although I’m not a big fan of the new user interface I will be starting to move my virtualization lab based servers over to W2K12 sometime soon.
|Windows Server 2012 Version||Physical Memory Limit|
|Storage Server 2012 Workgroup||32GB|
|Storage Server 2012 Standard||4TB|
|Hyper-V Server 2012||4TB|