Processor

 2.66GHz Intel Core i5 (quad core)

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)

Graphics

 ATI Radeon HD 4850 with 512MB of GDDR3 memory

Video

   
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)

Display

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

USB

 Four USB 2.0 ports on computer; two USB 2.0 ports on keyboard, One FireWire 800 port; 7 watts

Audio

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

Ethernet

 Built-in 10/100/1000BASE-T (Gigabit)

Wireless

 Built-in AirPort Extreme Wi-Fi (802.11n)²; built-in Bluetooth 2.1 + EDR (Enhanced Data Rate)