There were various changes to memory related DMVs, DBCC memory status, and Perfmon counters in SQL Server 2012 as part of the redesign of the Memory Manager component of SQLOS. The Memory Manager redesign resulted in being able to more accurately size and govern all SQL Server memory consumption, making page allocations more efficient, and ...

Since the release of SQL Server 2012 with a redesigned memory manager, a steady stream of KB articles have been produced by CSS to provide guidance on the new or changed options, as well as fixes that have been published..   How has memory sizing changed in SQL 2012? 2663912 Memory configuration and sizing considerations in SQL ...