Video game industry
Modern personal computers have many innovations: sound cards, graphics cards, 3D graphic accelerators, faster CPUs, and dedicated co-processors like PhysX are a few of the more notable improvements. Sound cards, for example, were originally developed for the addition of digital-quality sound to games, and only later were they improved for the music industry. Graphics cards were developed to provide more screen colors, and later on to support graphical user interfaces (GUIs) and games.