which type of connection is better, SQL server login credential OR IWA?

Question

hi all,

i am wondering which connection performance is faster with SAS, whether SQL server login credential or IWA with SAS (Statistical Anlysis Software) application, SAS Enterprise Guide (windows app)? Currently i am connected to SQL server db connection through SQL login credential and planning to use Windows Active Directory Authentication now, before implementation i am wondering which authentication is better in performance and all or SQL Server Login credential?

 

please advise...

Thanks.