Performance question - Updage with Correlated/Non Correleated Sub Query

Any whay of predicting which will perform better

update table1
set column_name = 'New Value'
where
exists (select pk from table2 where table1.table2_fk = table_2.pk)

update table1
set column_name = 'New Value'
where
table2_fk in (select pk from table2) Received on Mon Apr 24 2000 - 00:00:00 CDT