Just in general, I can estimate that with a 0.1GHz lower clockspeed and reduced cache by comparison, this CPU should perform approx. the same:http://www.cpu-world.com/CPUs/Celeron_Dual-Core/Intel-Celeron%20Dual-Core%20E1600%20HH80557PG056D%20(BX80557E1600%20-%20BXC80557E1600).html
You could always look at this list though:http://www.cpubenchmark.net/cpu_lookup.php?cpu=AMD+Athlon+64+X2+Dual+Core+4800%2B
The problem of course with that site is a bit of inconsistency etc due to the mass amount of test systems and data. Sometimes entries are overclocked also.