Processor Processor Type Intel Core i5 Processor Speed 2.70 GHz Number of Cores Quad-Core Motherboard Video Output Interface USB Motherboard I/O Ports FireWire (IEEE1394b) x 1, Infrared Port Header x 1, RJ45 Lan Port x 1, USB 2.0 x 4 Display Screen Type Flat Panel LCD TFT (Active Matrix) Screen Size 27" Hard Drive Hard Drive Capacity 1 TB Hard Drive Rotation Speed 7200 RPM Hard Drive Interface Serial ATA III Memory RAM Technology DDR3 SDRAM Installed RAM 4 GB RAM Max Supported Size 32 GB Installed Cache Memory 32 KB Max. Cache Memory 6 MB CD / DVD Optical Drive Type DVD+R DL/DVDRW/CD-RW Optical Drive Read Speed 24x (CD), 8x (DVD) Optical Drive Write Speed 24x (CD), 4x (DVD+R DL), 8x (DVD+R), 8x (DVD-R) Optical Drive ReWrite Speed 16x (CD-RW), 6x (DVD-RW), 8x (DVD+RW) Video On Board Graphic Processor AMD Radeon HD 6770M Max. Video Resolution 2560 x 1600 Installed Video Memory 512 MB Video Outputs DVI x 1, Dual-Link DVI x 1 Audio Audio Input Integrated Microphone, Line In (3.5mm), Microphone, Optical Digital In Audio Output Headphones, Line Out, Optical Digital, Sound card, Speaker(s), Speakers Networking Data Link Protocol AirPort Extreme, Bluetooth, Bluetooth 2.1 + EDR, Ethernet, Fast Ethernet, Gigabit Ethernet, IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n Networking Type Bluetooth, Infrared Port, Integrated 10/100/1000 Network Card, Integrated Wireless LAN Dimensions Depth 8.15 in. Height 20.4 in. Width 25.6 in. Weight 30.5 lb. Miscellaneous Form Factor All-in-one Release Date May, 2011 Exterior Color Silver Other Features Built In Web Camera