Specs

Display
Retina display: 15.4-inch (diagonal) LED-backlit display with IPS technology
2880-by-1800 native resolution at 220 pixels per inch with support for millions of colors
Scaled resolutions: 1920 by 1200, 1680 by 1050, 1280 by 800, and 1024 by 640 pixels
Processor
2.4GHz quad-core
Intel Core i7 processor (Turbo Boost up to 3.4GHz) with 6MB shared L3 cache
Configurable to 2.7GHz quad-core Intel Core i7 (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache or 2.8GHz quad-core Intel Core i7 (Turbo Boost up to 3.8GHz) with 8MB shared L3 cache.
2.7GHz quad-core
Intel Core i7 processor (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache
Configurable to 2.8GHz quad-core Intel Core i7 (Turbo Boost up to 3.8GHz) with 8MB shared L3 cache.
Memory
2.4GHz quad-core
8GB of 1600MHz DDR3L onboard memory
Configurable to 16GB.
2.7GHz quad-core
16GB of 1600MHz DDR3L onboard memory
Storage1
2.4GHz quad-core
256GB
Configurable to 512GB or 768GB flash storage.
2.7GHz quad-core
512GB
Configurable to 768GB flash storage.
Size and Weight
Height: 0.71 inch (1.8 cm)
Width: 14.13 inches (35.89 cm)
Depth: 9.73 inches (24.71 cm)
Weight: 4.46 pounds (2.02 kg)2
Graphics and Video Support
Intel HD Graphics 4000
NVIDIA GeForce GT 650M with 1GB of GDDR5 memory and automatic graphics switching
Dual display and video mirroring:
Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on up to two external displays, at millions of colors
Thunderbolt digital video output
Native Mini DisplayPort output
DVI output using Mini DisplayPort to DVI Adapter (sold separately)
VGA output using Mini DisplayPort to VGA Adapter (sold separately)
Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter (sold separately)
Camera
720p FaceTime HD camera

Connections and Expansion

MagSafe 2 power port
Two Thunderbolt ports (up to 10 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)
Wireless
Wi-Fi
802.11n Wi-Fi wireless networking;3 IEEE 802.11a/b/g compatible
Bluetooth
Bluetooth 4.0 wireless technology
Audio
Stereo speakers
Dual microphones
Headphone port
Headphone/optical digital audio output (minijack)
Support for Apple iPhone headset with microphone
Keyboard and Trackpad
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
Battery and Power4
Up to 7 hours wireless web
Up to 30 days standby time
Built-in 95-watt-hour lithium-polymer battery
85W MagSafe 2 Power Adapter with cable management system; MagSafe 2 power port
Electrical and Operating Requirements
Line voltage: 100V to 240V AC
Frequency: 50Hz to 60Hz
Operating temperature: 50° to 95° F (10° to 35° C)
Storage temperature: –13° to 113° F (–24° to 45° C)
Relative humidity: 0% to 90% noncondensing
Maximum operating altitude: 10,000 feet
Maximum storage altitude: 15,000 feet
Maximum shipping altitude: 35,000 feet