You can run the below query and identify the suitable MAXDOP for your SQL Server thenĀ you can set the MAXDOP using sp_configure stored procedure :-
Below script to identify the suitable MAXDOP for SQL SERVER based on available CPU
select case when cpu_count / hyperthread_ratio > 8 then 8 else cpu_count / hyperthread_ratio end as optimal_maxdop_setting from sys.dm_os_sys_info;
Script to set the MAXDOP for SQL SERVER
sp_configure 'show advanced options', 1; GO RECONFIGURE WITH OVERRIDE; GO sp_configure 'max degree of parallelism', <OutPut of the above script >; GO RECONFIGURE WITH OVERRIDE; GO
Hope it will help you guys!!!