this post was submitted on 09 Jan 2026
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How we get to 1 nanometer chips and beyond (research.ibm.com)
submitted 2 days ago by AfterNova@lemmy.world to c/technology@lemmy.world
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[–] JohnEdwa@sopuli.xyz 12 points 1 day ago* (last edited 1 day ago)

Open any wikipedia article about "x nm process" and one of the first paragraphs will be something like this:

The term "2 nanometer", or alternatively "20 angstrom" (a term used by Intel), has no relation to any actual physical feature (such as gate length, metal pitch or gate pitch) of the transistors. According to the projections contained in the 2021 update of the International Roadmap for Devices and Systems published by the Institute of Electrical and Electronics Engineers (IEEE), a "2.1 nm node range label" is expected to have a contacted gate pitch of 45 nanometers and a tightest metal pitch of 20 nanometers.[1]

It used to be that the "60nm process" was called that because the transistor gate was 60nm.