Comment on Firm predicts it will cost $28 billion to build a 2nm fab and $30,000 per wafer, a 50 percent increase in chipmaking costs as complexity rises

• BetaDoggo_@lemmy.world ⁨10⁩ ⁨months⁩ ago

  They solved this problem by making the nanometer bigger.

  en.m.wikipedia.org/wiki/5_nm_process

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• foggy@lemmy.world ⁨10⁩ ⁨months⁩ ago

  This was my understanding as well: That beyond ~7nm the reliability begins to lose value because the diameter of an electron ‘orbit’ or whatever becomes a factor.

  Admittedly I’m not an expert. But my understanding was that to break this limitation and keep Moore’s law were kinda leaning into quantum computation to eventually fill the incoming void.

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  • Kyrgizion@lemmy.world ⁨10⁩ ⁨months⁩ ago

    The reason you mean is quantum tunneling. Essentially, at that small a scale an electron can ‘teleport’ outside of the system, which is obviously a big nono for computing.

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