27-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1440 resolution with support for millions of colors 2.9 GHz quad-core Intel Core i5 processor (Turbo Boost up to 3.6 GHz) with 6 MB L3 cache 1 TB hard drive (7200 RPM) Upgraded to 32GB (Four x 8 GB) of 1600MHz DDR3 memory; four user-accessible SO-DIMM slots. NVIDIA GeForce GT 660M graphics processor with 512 MB of GDDR5 memory Thunderbolt digital video output (native Mini DisplayPort output); compatible with DVI, VGA, and dual-link DVI output using optional adapters Stereo speakers; dual microphones; headphone/optical digital audio output (minijack); support for Apple iPhone headset with microphone Two Thunderbolt ports (up to 10 Gbps) Four USB 3 ports (up to 5 Gbps) SDXC card slot Gigabit Ethernet port 802.11n Wi-Fi wireless networking (802.11a/b/g compatible); Bluetooth 4.0; Gigabit Ethernet (10/100/1000) HD 720p FaceTime camera Included Apple Wireless Keyboard and Magic Mouse Dimensions: 25.6 x 20.3 x 8 inches Weight: 21 pounds