IBM and the Swiss Federal Institute of Technology are working on a water-cooled supercomputer whose surplus heat will be reused to heat the university's buildings, CNET reports. The Aquasar supercomputer will combine two rack-mounted IBM BladeCenter servers, each containing multiple blades, and IBM estimates that the water-cooling scheme will reduce the system's carbon footprint by up to 85 percent and save up to 30 tons of carbon dioxide annually, compared with standard cooling approaches. The refrigeration units typically used by data centers consume about half of the centers' energy. Aquasar will need no such equipment. As a result, it should...

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