Machined from a single piece of aluminum, the new 15-inch MacBook Pro is thinner, more powerful, and years ahead of its time. The stunning, ultrathin LED-backlit display gives you instant full screen brightness. The NVIDIA GeForce 9400M and 9600M GT graphics processors provide the perfect combination of power and efficiency for everyday tasks as well as 3D games and graphics-intensive applications like Aperture and Motion. And the all-new Multi-Touch trackpad has no separate button. The entire smooth glass surface is the button, so it’s clickable everywhere. This larger trackpad brings more room, more functionality, and more Multi-Touch gestures to fingers. At less than an inch thin and 5.5 pounds, it isn’t just the next-generation MacBook Pro, it’s the next generation of notebooks. Actual weight varies by configuration and manufacturing process. 21GB = 1 billion bytes; actual formatted capacity less.