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Luiz Barroso talks about the concept of Energy Proportional computing and how he thinks DRAM and disk manufacturers could do a better job creating devices consume energy in proportion to the computing to perform. Barroso and Holzle analyzed 5000 servers at Google over six months and found the average CPU utilization was between 15-45% - the region in which a computer operates the least efficiently. At issue is the fact that most manufacturers maximize efficiency to SPECpower which assumes that the computer is running at 100% utilization.
