How to calculate the max number of worker threads in SQL Server?

I use 64-bit OS with two CPUs (each of them makes 7 logical processors) and with total number of logical processors equal to 14. When I run this code I get **2048** SELECT max_workers_count FROM sys.dm_os_sys_info On the other way, when I use the formula below I get totally different number which is **672** For a 64-bit operating system: Total available logical CPUs 4 Max Worker Threads = 512 + ((logical CPUs - 4)*16) Can you explain to me why I get different numbers? I tested it on another server and got exact same numbers for both cases. **EDIT** P.S Thanks to Dan Guzman for his suggestions to check server settings for max worker threads. That is what EXEC sp_configure 'max worker threads' returns: