You do understand that not all chips capable of being unlocked will actually unlock right? Some chips are factory locked fully capable CPUs only locked because of high demand for the less powerful chips. These generally unlock. Much more common is a damaged piece of silicon that has a reason for being locked in that it would not pass the test as say a 6 core CPU but would pass testing as a quad. So there is never a guarantee just like with overclocking every chip is different.