Why reduced efficiency? According to this article from
Anton Shilov of Anandtech (
https://www.anandtech.com/show/1883...n-schedule-n3p-n3x-deliver-five-percent-gains ), N3E can be configured to provide either more performance or greater efficiency than N3B (or some combination of the two.
Indeed, the only downside of N3E is its modestly lower density, which (for Apple) should only be an issue for the Max chip, which could possibly be constrained by the reticle size. Thus, overall, the N3E process seems like it would be better even for the same price—and yet it's much less expensive.
Folks on this thread seem to be confusing cost with quality. The fact that the N3E costs less doesn't mean it's "lower-end". Quite the opposite.
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