You can get significant performance gain by just moving the existing applications to SQL Server 2016. There are several case studies to prove this story. You can even get more performance gain (2X - 4X) with combination of SQL Server 2016 SP1 and Windows Server 2016 (not yet released). This performance gain achieved through Persistent (non-volatile) Log Buffer technique. This performance enhancement has been released to SQL Server with SP1. SQL Server utilizes Windows Server 2016 direct memory access (DAX). With this new feature SQL Server can write transaction log data in memory access speed over disk IO speed earlier. With the new type of memory which is persistent, the moments SQL Server writes to log cache (memory area for t-log), the data is persistent.
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