JonathanKoomey
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Koomey's law heckles Moore's in the post-PC world
Around the same time most years, (2007, 2009, 2010), someone heralds the death of Moore's law. This time it's Stanford University's Dr. Jonathan Koomey, who has found that energy efficiency roughly doubles every two years. With the rise of mobile devices, we care less if our phones and tablets can outpace a desktop and more about if a full charge will last the duration of our commute -- reducing the importance of Moore's law. Historically, efficiency has been a secondary concern as manufacturers built ever faster CPUs, but Koomey believes there is enormous room for improvement. In 1985, Dr. Richard Feynman calculated an efficiency upper limit of Factor 100 Billion -- since then we've only managed to achieve Factor 40,000. Let's just hope Quantum Computing goes mainstream before next autumn so we can get on with more important things.
Report: data centers accounted for just 1 to 1.5 percent of electricity use last year, Google claims less than 1 percent of that
You'd think, watching companies like Apple break ground on sprawling data centers, that the number of servers powering our untethered lives was on the rise. In a different decade, you might have been right. But not this one. According to a study prepared at the request of The New York Times, the number of servers in use has declined "significantly" since 2005. That's mostly because of the financial crisis of 2008, says lead researcher Jonathan G. Koomey of Stanford University, but we also can't discount the effect of more efficient technologies. What's more, he says, servers worldwide consume less energy than you might have guessed: they accounted for somewhere between 1 and 1.5 percent of global electricity use in 2010. And while Google, the king of cloud computing, has been cagey about revealing just how many servers house its treasure trove of data, the company said that of that 1 to 1.5 percent, it accounted for less than 1 percent -- meaning, just a hundredth of a percent of all the electricity consumed last year. All told, data centers' energy consumption has risen 56 percent since 2005 -- a far cry from the EPAs 2007 prediction that this figure would double by 2010, with annual costs ballooning to $7.4 billion. Then again, this slower-than-expected growth could well be temporary. Though Koomey can't specify to what extent the financial crisis and technological advancements are to blame, he insists, broadly speaking, that we're primarily seeing fallout from the economic slowdown -- a stay of execution, of sorts, for those of us rooting for energy conservation.
