I found a rather interesting article in the web that combined a few things that I was aware of myself and added a bit that I didn’t know before. As usually, I made a Mind Map to capture the key thoughts.
The original article is here. Clearly, some unnecessary exaggeration (like: 10 power 10 times more efficient), but the overall ideas are mostly sane. 😉
For printing purposes, there is a black & white version.