July 2013
Beginner to intermediate
262 pages
7h 7m
English
Content preview from Green Computing
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218 Green Computing
faster as they get smaller, this means that chip performance, for a fixed cost,
doubles every 18 months.
Another way of saying the same thing is that the cost of computing is cut in
half every 18 months. A US Government chart showing this drop over a recent
30-year period is shown in Figure 12.3.
Figure 12.3 Processing costs plummet by 50% every 18 months. (Sou rce: http://
www.federalreserve.gov/Pubs/feds/2006/200644/)
The Future: Deep Green Computing 219
This trend is quite promising for green computing. If costs are plummeting,
everything “green” gets easier:
• Energy usage drops by half every 18 months
• Materials re
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