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  3. It is just one example of the growing concern over the increasing power consumption and environmental impact of computers. A stu

It is just one example of the growing concern over the increasing power consumption and environmental impact of computers. A stu

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问题     It is just one example of the growing concern over the increasing power consumption and environmental impact of computers. A study found that the power consumption of data centers doubled between 2000 and 2005, and now accounts for 1. 2% of American electricity consumption, though other estimates put the figure at 4%. Companies now spend as much as 10% of their technology budgets on energy, says Rakesh Kumar of Gartner, a consultancy.
    Power consumption has increased because of the rise of the internet, of course, but also because of way in which computers have historically been designed: to maximize performance at all costs. Between 1996 and 2006, the number of servers in use went from 6 million to 28 million and the average power consumption of each server grew from 150 watts to 400 watts. But things are now starting to change and the computer industry has been seized with enthusiasm for "green computing".
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答案 这只是人们日益关注计算机渐增的能耗以及环境影响的一个例子。一项研究显示，从2000年到2005年，数据中心的能耗翻了一番，目前占美国电力消耗的1．2％，不过其他评估报告认为该数字应该是4％。Gartner咨询公司的Rakesh Kumar说，目前各公司将它们技术预算的10％用于能源支出。 当然，能耗的增加不仅是由于互联网的兴起，也与计算机一直以来的设计方式有关，即不惜任何代价，最大限度地提高性能。从1996年到2006年，运行中的服务器数量从600万台增至2 800万台，每台服务器的平均能耗从150瓦升至400瓦。不过情况现在正在开始发生变化，计算机行业已兴起了一股“绿色计算”热潮。
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