dbcc checkdb - how to work out the resources needed?

Integrity checks are important on a regular basis to find out errors . Even on servers involved in availability groups . we can normally find out how long it took to run? It is a known fact that dbcc checkdb use a great deal of resources . So I have run it to one of my databases - 170 Gb size. with estimate only :

dbcc checkdb(DEV_My_Database) with estimateonly

It came out: > DBCC results for 'DEV_My_Database'. Estimated TEMPDB space (in KB) > needed for CHECKDB on database DEV_My_Database = 44320313. DBCC > execution completed. If DBCC printed error messages, contact your > system administrator. However, I never saw any extra usage of tempdb as everything seemed to fit in there for this purpose. How can I work out the right usage of resources, including tempdb, for my dbcc ?