IBM goes sub-1nm, develops 0.7nm-class technology — offering up to 50% higher performance and 70% higher energy efficiency compared to IBM's 2nm-class node

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https://www.tomshardware.com/tech-industry/semiconductors/ibm-goes-sub-1nm-develops-0-7nm-class-technology-offering-up-to-50-percent-higher-performance-and-70-percent-higher-energy-efficiency-compared-to-ibms-2nm-class-node

It uses two wafers instead of one, along with ultra-thin dielectric bonding

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“1-nm” is doubly meaningless, it’s an arbitrary length and nothing is that size, it’s pretty much a version number

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TIL that IBM designs and/or fabricates ICs.

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