Bob Brodersen of the University of California, in Berkeley, has calculated that moving an application from a general-purpose software implementation to a specialised chip can improve efficiency by a factor of 10, 000 (the efficiency metric being millions of calculations per milliwatt of power consumed).

ECONOMIST: MONITOR

Forbes long has considered financial efficiency an important factor for would-be donors to consider.

FORBES: Largest-Charities Methodology: Size, Then Financial Efficiency

Because this infrastructure is quickly aging and the ability to produce more electricity is limited in some parts of the country, energy efficiency will undoubtedly be a key factor in addressing this growth.

FORBES: Magazine Article

Factor in the Kepler architecture's great efficiency and low thermal design power and the GTX 660 Ti assures gamers of having the most stable, quiet and power-efficient gaming experience possible in its price class.

ENGADGET: NVIDIA announces $299 GeForce GTX 660 Ti, lets Kepler walk among the people

However, the tax efficiency of bond ETFs is not a big factor, because capital gains do not play as big of a part in bond returns as they do in stock returns.

FORBES: An Easy Way To Add Fixed-Income To Your Portfolio

And that's the really - I think that's the big factor, the unknown here, is when do American consumers begin taking energy efficiency seriously?

NPR: Gulf Oil Discovery Could Have Far-Reaching Effect

But what sets its ConsERV technology apart, aside from a more compact and flexible form factor, is that independent testing has shown it delivers higher rates of moisture transmission, translating into better energy efficiency.

FORBES: Magazine Article