Later this year millions of homes will get a new supercomputer for the living room. Or maybe the playroom. Sony's long-awaited PlayStation 3 game console, a slender yet muscular machine the size of a DVD player, performs a mind-boggling 2 trillion calculations per second. This kind of power, once reserved for seismic exploration and nuclear-weapons design, will let program- mers create videogames that look as realistic as film.
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