Intel used to keep less important products, like chipsets, on trailing nodes (right now, that's 22nm). Now the company is fabbing the chipsets on 14nm, too. That's mainly because of the late move to 10nm. Intel's processors SHOULD be on 10nm, but they aren't, so chipsets are eating into 14nm production capacity. Intel has to create one chipset for each processor produced (in most cases), so this adds up to a lot of chips.