If this surprises you, I've got some bad news for you. Everyone does binning. Go buy 1000 5% resistors and test them. Instead of a normal distribution of tolerances, you'll find that there's an interesting trough around -2% to +2%. That's because all of the resistors are made using the same process and the lower tolerance ones are binned and sold at a higher price.
Same goes for silicon. The dies are largely the same. Only later in the process, they get binned to a lower spec cpu by selectively disabling features. Generally, this is because the chip doesn't meet some spec, but there are cases where this is simple done to meet demand.
Same goes for silicon. The dies are largely the same. Only later in the process, they get binned to a lower spec cpu by selectively disabling features. Generally, this is because the chip doesn't meet some spec, but there are cases where this is simple done to meet demand.