Retina display with 2880-by-1800 resolution. The world's highest resolution notebook display. Ultrafast all-flash architecture The latest quad-core Intel Core i7 processors Next-generation NVIDIA graphics Two Thunderbolt ports for connecting high-performance devices and transferring data at lightning speed Two USB 3 ports (compatible with USB 2 devices) and HDMI SDXC card slot FaceTime HD camera Multi-Touch trackpad OS X Lion Specifications: Product Height 0.7" Product Width 14.1" Product Weight 4.5 lbs. Product Depth 9.7" Processor Brand Intel Processor Intel Core i7 Processor Speed 2.6GHz Battery Type Lithium Polymer (Li-Polymer) Display Type Widescreen Retina LED-backlit (2880 x 1800) Screen Size (Measured Diagonally) 15.4" Cache Memory 6MB on die Level 3 System Memory (RAM) 8GB Type of Memory (RAM) DDR3 SDRAM Hard Drive Type Flash Computer Hard Drive Size 512GB Operating System Platform Mac Operating System Mac OS X Lion ENERGY STAR Qualified Yes