We've confirmed that AMD's K10 supports individual core clocking. This means that each of the four cores will be able to run at its own speed, and this might be a nice addition to all of the overclockers.
This is a Windows application and it will overclock each of your cores on the fly. The new K10 BA revision can pass 3GHz, but we don’t know the final clock limitation. Intel’s 45 nanometer Penryn managed to get to a magnificent 4.3GHz and that will be quite hard to match.
Once AMD's Phenom is out, at least you will have a choice; but, unfortunately in the remaining days of 2007, AMD will only have quad core K10 while dual cores are yet to come.
AMD working on OverDrive for CPUs