Not sure of any performance issues of master in a different collation.

But these database are the other system database.
MSDB - holds any packages\jobs etc.
Model - is the default for all new database.
Tempdb - holds any temp tables etc, is rebuilt from model everytime the server is restarted.

>Hi,
>
>If my client is having another collation in their SQL Server enterprise 2000 master db with my application db, does it have any side effect or performance issue ?
>
>If I need to rebuild it the master db, what other system db that I need to
>rebuild ?
>
>thank you