From the NewYork Times,an article on the future direction of supercomputing — At Los Alamos, Two Visions of Supercomputing:
By 2010, scientists predict, a single chip may hold more than a billion transistors, shedding 1,000 watts of thermal energy – far more heat per square inch than a nuclear reactor.
The comparison seems particularly apt at Los Alamos National Laboratory in northern New Mexico, which has two powerful new computers, Q and Green Destiny. Both achieve high calculating speeds by yoking together webs of commercially available processors. But while the energy-voracious Q was designed to be as fast as possible, Green Destiny was built for efficiency. Side by side, they exemplify two very different visions of the future of supercomputing.