Screen: 15.4-inch Retina with 2880 x 1800 resolution. Processor: Quad-core Intel Core i7 (4th generation). RAM: 16GB (fixed). Storage: 512GB ultra-fast SSD. Graphics Card: Dual (Intel Iris Pro + AMD Radeon R9 M370X). Ports: MagSafe 2, two USB 3 ports, HDMI port, two Thunderbolt 2 ports, and SD card reader.