Join Predicate Question

Let's say you have the following query:

Select
 From Claims C Inner Join

      Members M
On C.EmpID = M.EmpID

I understand what that does. But what if you have the following:

Select
 From Claims C Inner Join

      Members M
On C.EmpID = M.EmpID
and C.BirthDt >= '1980-01-01'

Is that more efficient that placing the additional predicate in a Where clause? I guess I'm trying to find out if there is any difference between that statement and this one:

Select
 From Claims C Inner Join

      Members M
On C.EmpID = M.EmpID
Where C.BirthDt >= '1980-01-01' Received on Tue Sep 17 2002 - 21:06:09 CDT