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by wongarsu
129 days ago
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The way neurons and synapses work you spend a lot of energy keeping them ready to fire. How often they actually fire is a smaller cost compared to maintaining them in ready state. We end up using 100W (2000kcal/day) for the whole body, or about 20W for the nervous system alone (though a nervous system alone wouldn't be able to survive). That's comparable to what a modern laptop uses. Sure, that laptop can't run a large LLM at any reasonable speed, but it can do basic math far better than my brain. By a comically large margin. Just a consequence of the very different architectures chosen |
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