Lower density chips are cheaper, because they can be made in previous generation fabs churning out previous generation wafers with previous generation equipment. So there isn't a choice between making a high or low density wafer from the same fab line.
Lower density chips are cheaper, because they can be made in previous generation fabs churning out previous generation wafers with previous generation equipment. So there isn't a choice between making a high or low density wafer from the same fab line.