You will figure it out soon enough
If you got a good sample you can hit anywhere from 2ghz to 2.4ghz with pretty much near stock voltage. 2.6-2.8ghz is about all you can hope for with what you got. I upgraded my laptop from a crappy a4 3300m to a nice a8 3530mx that proved to be a very nice overclocker. Managed to play a game of Crysis at 3.6ghz