Comment by mmmBacon

The article doesn’t say why the chips have a cost difference. The wafer cost of advanced nodes is ~$30k per wafer. Is the wafer cost different or is the yield different and hence the reason for the variance of 5-20%? All else being equal (same die size/design on same process) I suspect that a large part of the cost difference is yielded cost due to maturity of operations at the Arizona fab. Taiwan has had many years to optimize operations. You see this for any product initially when it moves to a new production site.