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Isn't there also a fundamental equivalence between information and energy in physics? And so is there not a lower limit to the amount of energy required to comp
by birktj 6y ago
Isn't there also a fundamental equivalence between information and energy in physics? And so is there not a lower limit to the amount of energy required to compute a SHA256 hash of a certain number of bytes, and by extension mine a bitcoin block?
- dogma1138 6y agoYes but only for irreversible computation https://en.m.wikipedia.org/wiki/Landauer%27s_principle https://en.m.wikipedia.org/wiki/Landauer%27s_principle
- deepnotderp 6y agoEven for reversible computation the Margolus-Levitin theorem has been hypothesized
- dogma1138 6y agoIsn’t the Margolus Levitin theorem slightly different? As in while it puts the maximum bound of amount of computation per J it doesn’t enforces a requirement that the entropy increase needs to be through a non-information degree of freedom as in heat.