[qlk1123]

> single human brain can often do in ~15Watts

There were similar arguments when AlphaGo showed up and beat master Go player Lee Sedol, but is power(in Watt) the right measurement? I always feel like it should be the total energy(in J or Cal) required to transform a computing device like biological brain or electrical computer from knowing nothing to being capable of a skill like Go game. In such sense, deep learning is still more energy efficient than human.

[littlestymaar]

Lee Sedol's lifetime energy consumption for all biological process is around 50MWh, Alpha Go consumed more than 100kW and was likely to have been trained more than 500h, so even counting all the energy Sedol spent eating, dancing or having sex ends up being less than the amount of energy spent to train the machine used to beat him.