Apple MacBook Pro 15.4-Inch Laptop (Intel Quad-Core i7 2.8GHz, 512GB Flash Storage, 16GB DDR3 Memory, Mac OS X), Aluminum Finish 2.8GHz quad-core Intel Core i7 (Turbo Boost up to 4.0GHz) with 6MB shared L3 cache 16GB of 1600MHz DDR3L memory, 512GB PCIe-based Flash Storage, Bluetooth 4.0/ 802.11ac Wi-Fi Retina display: 15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 resolution at 220 pixels per inch with support for millions of colors, Up to 9 hours wireless web Intel Iris Pro and AMD Radeon R9 M370X with 2GB of GDDR5 memory and automatic graphics switching, two Thunderbolt 2 ports, two USB 3 ports, an HDMI port, an SDXC card slot Force Touch trackpad for precise cursor control and pressure-sensing capabilities, 720p FaceTime HD camera, OS X Yosemite.