Are brain cells energy efficient?

'a close-up of a circuit board'

Biological systems, including brain cells, are energy efficient[3][1][2]. Biological computing needs only a fraction of the energy compared to silicon-based computing and AI[3]. The processing power of the brain is better than machines because brains deal better with uncertain data[3].

Biological intelligence is capable of rapid learning, and biological neural systems can operate in sugar water[1]. Biological learning uses fewer observations to solve problems[3]. Humans operate at a 10^6-fold better power efficiency relative to modern machines[3]. Also, current machine learning algorithms require enormous data and considerable power[1].

[1] rsv.org.au[2] ieee.org