2.3GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.5GHz) with 6MB shared L3 cache

16GB of 1600MHz DDR3L onboard memory

Intel Shared Graphics

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

Native resolution: 2880 by 1800 pixels (Retina); scaled resolutions: 1920 by 1200, 1680 by 1050, 1280 by 800, and 1024 by 640 pixels

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

Native resolution: 2880 by 1800 pixels (Retina); scaled resolutions: 1920 by 1200, 1680 by 1050, 1280 by 800, and 1024 by 640 pixels

 2880 by 1800 pixels

Weight: 4.46 pounds (2.02 kg)²

Full-size backlit keyboard with 78 (U.S.) or 79 (ISO) keys, including 12 function keys and 4 arrow keys (inverted “T” arrangement) with ambient light sensor

Multi‑Touch trackpad for precise cursor control; supports inertial scrolling, pinch, rotate, swipe, three‑finger swipe, four‑finger swipe, tap, double‑tap, and drag capabilities

Bluetooth 4.0 wireless technology

802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible

• MagSafe 2 power port

• Two Thunderbolt 2 ports (up to 20 Gbps)

• Two USB 3 ports (up to 5 Gbps)

• HDMI port

• Headphone port

• SDXC card slot

• Apple Thunderbolt to FireWire Adapter (sold separately)

• Apple Thunderbolt to Gigabit Ethernet Adapter (sold separately)