Instead of assembling a notebook from many minor parts, the MacBook was reinvented from just one: the solid-aluminum unibody enclosure. It gets full credit for making MacBook thinner, lighter, and even more stunning. But it's not all beauty. Because of the unibody, this MacBook is also durable. It was designed to take on your world. So slip it into your backpack or briefcase and pull it out wherever you go - it's impressive in any setting.The MacBook uses a graphics processor that economizes space in a whole new way. A traditional computer logic board contains multiple components: the CPU, two chips that control communication throughout the computer, and the graphics processor. The logic board in the MacBook contains only two components: The CPU and a graphics processor with all of the core logic built into a single chip.The beautifully seamless, remarkably thin design isn't the only gleaming quality of the LED-backlit display. Open your MacBook and you're instantly greeted by glorious full screen brightness. The aluminum enclosure is perfectly integrated with a glass overlay that stretches to the edge of the notebook, providing a completely unobstructed picture. Anything you view, including the glossy widescreen display itself, is a spectacular experience. The LED-backlit display is more power efficient. And it's mercury- and arsenic-free, so it's greener than ever..