Display

• 27-inch (viewable) LED-backlit glossy widescreen TFT display with support for millions of colors
• Resolution: 2560 by 1440 pixels

Processor

• 2.7GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache
  
• 3.1GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache
  Configurable to 3.4GHz quad-core Intel Core i7, only at the Apple Online Store.

Memory

4GB (two 2GB) of 1333MHz DDR3 memory
Configurable to 16GB, only at the Apple Online Store.

Storage1

• 2.7 GHz
  1TB (7200 rpm) hard drive
  Configurable to 2TB hard drive or 256GB solid-state second drive, only at the Apple Online Store.
• 3.1 GHz
  1TB (7200 rpm) hard drive
  Configurable to 2TB hard drive or 256GB solid-state second drive, only at the Apple Online Store.

Graphics

• 2.7 GHz
  AMD Radeon HD 6770M graphics processor with 512MB of GDDR5 memory
• 3.1 GHz
  AMD Radeon HD 6970M graphics processor with 1GB of GDDR5 memory
  Configurable to AMD Radeon HD 6970M with 2GB GDDR5, only at the Apple Online Store.

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

Audio

• Built-in stereo speakers
• Two internal 17-watt high-efficiency amplifiers
• Headphone/optical digital audio output (minijack)
• Audio line in/optical digital audio input (minijack)
• Built-in microphone
• Support for Apple iPhone headset with microphone

Connections and Expansion

• Two Thunderbolt ports
• Mini DisplayPort output with support for DVI, VGA, and dual-link DVI (adapters sold separately)
• One FireWire 800 port; 7 watts
• Four USB 2.0 ports
• SDXC card slot
• Slot-loading 8x SuperDrive with 4x double-layer burning (DVD±R DL/DVD±RW/CD-RW)
• Audio in/out
• 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
• IR receiver

Input

• Apple Wireless Keyboard
  Full-size keyboard with 78 (U.S.) or 79 (ISO) keys, including 12 function keys, 4 arrow keys (inverted “T” arrangement), and embedded numeric keypad
• Magic Mouse
  Smooth, seamless Multi-Touch surface with support for simple gestures (scrolling and swiping). Click and double-click anywhere. Ambidextrous construction accommodates left- and right-handed users.
• Magic Trackpad
  Solid-state scrolling trackpad for precise cursor control; supports inertial scrolling, pinch and expand, swipe, three-finger swipe, four-finger swipe, tap, double-tap, rotate, screen zoom, scroll, click and drag, click drag and lock, secondary click A and B

Wireless

• Wi-Fi
  802.11n Wi-Fi wireless networking;2 IEEE 802.11a/b/g compatible
• Bluetooth
  Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology

Size and Weight

• Height: 20.4 inches (51.7 cm)
• Width: 25.6 inches (65.0 cm)
• Depth: 8.15 inches (20.7 cm)
• Weight: 30.5 pounds (13.8 kg)3

Electrical and Operating Requirements

• Line voltage: 100-240V AC
• Frequency: 50Hz to 60Hz, single phase
• Maximum continuous power: 310W
• Operating temperature: 50° to 95° F (10° to 35° C)
• Storage temperature: -4° to 116° F (-20° to 47° C)
• Relative humidity: 5% to 95% noncondensing
• Maximum altitude: 10,000 feet
• Typical acoustical performance
  • Sound pressure level (operator position): 18 dBA at idle4