I will praise thee; for I am fearfully and wonderfully made: marvellous are thy works; and that my soul knoweth right well. Psalm 139:14
"So a typical adult human brain runs on around 12 watts—a fifth of 
the
power required by a standard 60 watt lightbulb.
Compared with most other
organs, the brain is greedy; pitted against man-made electronics, it is
astoundingly efficient. IBM's Watson, the supercomputer that defeated
Jeopardy! champions, depends on ninety IBM Power 750 servers, each of
which requires around one thousand watts."
Ferris Jabr, Scientific American, July 18, 2012