This entire yield discussion is above my head
Even if we assume the numbers given by BnC were correct (I have a slight suspicion these numbers might have been made up, but even then they could still be correct, if only by accident) - don't we miss a lot of further information to make anything meaningful with these numbers? I for one have no clue what the contract between AMD and the fab partner looks like, if AMD is billed per wafer or chip, validated or not, what amount they are charged etc. nor do I know jack about yields of a comparable design on the same node or anything about how far the Ryzen die design itself contributes to this stellar yield and what part comes from the modular aspect of the chip. If have no idea whatsoever what to make with these 99.8%. Ok, more is better, I get that, so overall it must be really good, but what "it" specifically means... no clue.