A big price drop is one surefire way to make shoppers pay attention to your cloud revolution. But the new $249 Samsung Chromebook Series 3 isn't just $200 cheaper than its predecessor. Google swapped the Intel Atom processor inside its clamshell for an ARM chip, which promises long battery life without sacrificing much in the way of performance. Meanwhile, Google is continuing to build upon the Chrome OS, with features such as a desktop and an app launcher. Has Google finally hit a sweet spot with the Chromebook?