2.9GHz quad-core Intel Core i5
Turbo Boost up to 3.6GHz
8GB (two 4GB) memory
1TB hard drive
NVIDIA GeForce GT 650M with 512MB
Processor 2.9GHz quad-core Intel Core i5 processor (Turbo Boost up to 3.6GHz) with 6MB L3 cache
Memory 8GB (two 4GB) of 1600MHz DDR3 memory
Display 21.5-inch (diagonal) LED-backlit display with IPS technology; 1920-by-1080 resolution with support for millions of colors
Storage 1TB (5400-rpm) hard drive
Size and Weight Height: 17.7 inches (45.0 cm) x Width: 20.8 inches (52.8 cm) x Stand depth: 6.9 inches (17.5 cm) Weight: 12.5 pounds (5.68 kg)
Graphics NVIDIA GeForce GT 650M graphics processor with 512MB of GDDR5 memory
Video Support and Camera FaceTime HD camera Simultaneously supports full native resolution on the built-in display and up to a 30-inch display (2560 by 1600 pixels) on an external display, Support for extended desktop and video mirroring modes
Connections and Expansion Four USB 3 ports
Two Thunderbolt ports
Mini DisplayPort output with support for DVI, VGA and dual-link DVI (adapters sold separately)
10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
Kensington lock slot
Wireless Wi-Fi
802.11n Wi-Fi wireless networking;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
Electrical and Operating Requirements Line voltage: 100-240V AC
Frequency: 50Hz to 60Hz, single phase
Operating temperature: 50° to 95° F (10° to 35° C)
Relative humidity: 5% to 95% noncondensing
Maximum operating altitude: 10,000 feet
* The keyboard docking station comes in US layout.