Display

27-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1440 resolution with support for millions of colors

Processor

3.5GHz quad-core Intel Core i7 (Turbo Boost up to 3.9GHz).

RAM

32GB of 1600MHz DDR3 memory; four user-accessible SO-DIMM slots

Hard Drive

256GB SSD 

Graphics Coprocessor

NVIDIA GeForce GTX 775M graphics processor with 2GB of GDDR5 memory

Wireless Type

• AirPort Extreme 802.11n Wi-Fi wireless networking;² IEEE 802.11a/b/g compatible

•Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology

•10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)

Connections

• SDXC card slot
• Four USB 3 ports (compatible with USB 2)
• 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

Audio Support

• Stereo speakers
• Dual microphones
• Headphone port

Video Support

• 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
• Support for Target Display Mode via the Thunderbolt port using a Thunderbolt to Thunderbolt cable (sold separately)