5 ms·
> the power efficiency of analogue circuitry is dramatically worse The human brain would like to have a word with you.
by glial 6y ago
> the power efficiency of analogue circuitry is dramatically worse
The human brain would like to have a word with you.
- eloff 6y agoAt the slow "clock speed" the brain runs at, it produces a lot of heat. A quick search turns up 10-20 watts as a rough estimate. It's still petty competitive given what it's capable of.
- tehjoker 6y agoGood thing we have liquid cooling
- anthropodie 6y agoWhy do you say slow "clock speed"? Can we even use clock speed w.r.t brain? Genuinely curious.
- falcor84 6y agoI assume the comment was referring to the duration of the action potential and subsequent refectory period[0], which are on the order of milliseconds. [0] https://en.wikipedia.org/wiki/Refractory_period_%28physiology%29 https://en.wikipedia.org/wiki/Refractory_period_%28physiolog...
- candiodari 6y agoThat makes no sense because the brain is not digital (it's "pulse-based"). There is no signal synchronizing all neurons in the brain, which is probably where a lot of the power savings come from too.
- eloff 6y agoIt's a very rough analogy. The brain doesn't work like a computer chip, but it does work much slower than modern chips in neuron firings per second.