Processor
Intel Core i7 (quad core)

Cache
8MB shared L3 cache

Frontside bus
1066MHz

Memory
4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 SDRAM; supports up to 16GB

Hard drive
1TB Serial ATA4; 7200 rpm

Optical drive
Slot-loading 8x SuperDrive with 4x double-layer burning (DVD±R DL/DVD±RW/CD-RW)

Display
27-inch (viewable) LED-backlit glossy 16:9 widescreen TFT active-matrix display; 2560 by 1440 pixels; millions of colors; IPS technology

Video
Built-in iSight camera; Mini DisplayPort output with support for DVI, dual-link DVI, and VGA video (requires adapters, sold separately) Built-in iSight camera; Mini DisplayPort output with support for DVI, dual-link DVI, and VGA video (requires adapters, sold separately); supports input from external DisplayPort sources (requires cables and adapters, sold separately)

Graphics
ATI Radeon HD 4850 with 512MB of GDDR3 memory

FireWire
One FireWire 800 port; 7 watts

USB
Four USB 2.0 ports

SD Card
SD card slot

Audio
Built-in stereo speakers with two internal 17-watt high-efficiency amplifiers, built-in microphone, optical digital audio output/headphone out, optical digital audio input/audio line in

Ethernet
Built-in 10/100/1000BASE-T (Gigabit)

Wireless
Built-in AirPort Extreme 802.11n Wi-Fi wireless networking2; built-in Bluetooth 2.1 + EDR (Enhanced Data Rate)

Included accessories
Apple Wireless Keyboard and Magic Mouse

Other
Built-in IR receiver : Built-in IR receiver, optional VESA Mount Adapter Kit