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If the superconducting microprocessor is 80x as efficient as a normal micro, that means that it uses about 100 million times as much energy as Landauer's princi
by bryanlarsen 2y ago
If the superconducting microprocessor is 80x as efficient as a normal micro, that means that it uses about 100 million times as much energy as Landauer's principle. (A normal micro uses a billion times as much, and Landauer's energy is ~1/5th at superconducting temperature).
- incompatible 2y agoYes, but the quote suggests no energy transfer at all. All you need then is a cold place (somewhere in remote space perhaps, or after the heat death of the Universe) and your computation can continue forever without power. It doesn't seem intuitive that that would be possible.
- reaperman 2y agoIt is extremely likely that the quote is hyperbolic (wrong / inaccurate). If someone broke Landauers limit, that would be a massive headline in academia. Hell even reasonably approaching Landauer’s limit would be huge news. Most likely this headline is a confusion from how signal/power transmission (rather than calculation/work) is truly lossless in superconductors.
- jakobson14 2y agoContinue forever? no. Be performed once at no cost? maybe. I'm kinda sceptical that a computation to which the 2nd law is indifferent would occur spontaneously without immediately reversing. The 2nd law is what determines the direction that things typically progress.