SQL Server/T-SQL Tutorial/System Settings/TIMETICKS

@@TIMETICKS Displays the number of microseconds per tick. A tick is a unit of measurement designated by a

specified number of milliseconds (31.25 milliseconds for Windows 2000).
3>
4> SELECT "TimeTicks", @@TIMETICKS
5> GO
--------- -----------
TimeTicks       31250
(1 rows affected)