Try to imagine where 3D gaming would be today if not for the graphics processing unit, or GPU. Without it, you wouldn't be tredging through the jungles of Crysis in all its visual splendor, nor would you be fending off endless hordes of fast-moving zombies at high resolutions. For that to happen, it takes a highly specialized chip designed for parallel processing to pull off the kinds of games you see today, the same ones that wouldn't be possible on a CPU alone. Going forward, GPU makers will try to extend the reliance on videocards to also include physics processing,...