This November 2008 graphic illustrates the top 100 supercomputers in circles "sized according to their maximum processing speed in teraflops. A teraflop is about equal to the processing speed of 1,000 personal computers." Includes a breakdown by area of use (such as research) and continent. A graph on a second tab, "Historical Computing Speeds," shows the rise in computing speeds in the U.S., China, India, Japan, and Western Europe. From The New York Times.