Apple yesterday introduced the A7 chip, the 64-bit chip at the heart of the new iPhone 5S that provides impressive graphics capabilities and processing power. The mobile game Infinity Blade III launched with the 5S, and during its presentation Apple used the game to show off the new iPhone's powerful graphics chops.But the A7 isn't just for gamers. It powers a whole bunch of features that you, the ordinary user, are likely to care about. A lot.In a nutshell, the 64-bit chip provides better speed, faster applications, more processing power, and better graphics. That means you can download videos and update your social media feeds faster. Apple'