affinity64-mask-server-configuration-option.md

title	affinity64 mask Server Configuration Option
description	Find out about the affinity64 mask option. See when to use it in SQL Server to bind processors to specific threads.
author	rwestMSFT
ms.author	randolphwest
ms.date	03/02/2017
ms.service	sql
ms.subservice	configuration
ms.topic	conceptual
helpviewer_keywords	processor affinity [SQL Server] affinity64 mask option binding processors [SQL Server]

affinity64 mask Server Configuration Option

[!INCLUDE SQL Server]

The affinity64 mask binds processors to specific threads, similar to the affinity mask option. Use affinity mask to bind the first 32 processors, and use affinity64 mask to bind the remaining processors on the computer. This option is only visible on the 64-bit version of [!INCLUDEssNoVersion].

Note

[!INCLUDEssNoteDepFutureAvoid] Use ALTER SERVER CONFIGURATION (Transact-SQL) instead.

See Also

affinity mask Server Configuration Option
Monitor Resource Usage (System Monitor)
Server Configuration Options (SQL Server)
sp_configure (Transact-SQL)
RECONFIGURE (Transact-SQL)