> If you CPU is 100mm across, the speed of light limits it to 3GHz because that'... | Hacker News

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		coolspot on Jan 25, 2021 \| parent \| context \| favorite \| on: New Transistor Structures At 3nm/2nm > If you CPU is 100mm across, the speed of light limits it to 3GHz because that's how many times you can cross the cpu travelling at c. At 10mm you get 30GHz. 100mm across is 10cm, 0.1m, 4 inches. That’s palm-sized CPU - far from any modern silicon.

LatteLazy on Jan 25, 2021 | [–]

The reason we have shrunk the CPU is because the transistors etc that used to take 100mm can now be held in 10mm.

Theres always this trade off between complexity and speed. Making the components smaller means you can have both!

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