Big problem in this way of looking at this: energy is measured in Joules, not in Watts. So this is not a fair comparison. Yes Lee was pretty cheap energy-wise

Big problem in this way of looking at this: energy is measured in Joules, not in Watts. So this is not a fair comparison. Yes Lee was pretty cheap energy-wise to "run" during the game itself, but needed 150W or so constantly for 33 years to get trained to be as good as he is (brain is cheap, but obviously you have to keep the body alive too). Plus the massive support structure needed to raise him, teach him, get him interested in Go, provide opponents to train against. As you can't have a grandmaster. You need 10 grandmasters, 1000 really good players, 1000000 good players, and so on to train someone to get to this level. AlphaGo needed 1MW, probably about the same for training. If AlphaGo got trained in about a week, I bet the energy difference would favor AlphaGo, depending on what you count you could make AlphaGo or Lee Sedol win the comparison, so really, it's a tossup. And let's compare it to chess. Deep Blue used probably a similar amount of power in it's entire lifetime as Gary Kasparov will need for his lifetime. Maybe a factor 10 difference, but no more. However, a current chess computer uses less than a billionth the amount of power for learning & playing chess than Gary Kasparov needs to live and learn to play chess at his level.