Ah ha. I guess then that if the muliplier was unlocked, you wouldn't have to increase the voltages half as much? Resulting ni a cooler and more stable overclock?
Yeah, though Athlon 64's can reach an Athlon FX-55 with tinkering and alot of water cooling i'd presume. They are all overclockable to around 6ghz if cooling and stabalising was done to the max