They'd be very expensive. Is there really a consumer market for large amounts (tens of GBs) of RAM with super high (800+GB/s) bandwidth? I guess you'll say AI applications but doing that amount of work on a mobile seems mad.

Yeah, I feel similarly about the development of NPUs. I guess it might be useful if we find more maybe non-AI uses for high-bandwidth memory that’s needed on the edge and not in centralized servers.