2.98GHz Pro (MC373LL/A) Enclosure Precision aluminum unibody Processor 2.98GHz Intel Core i7 L3 cache 6MB shared Memory 8GB (two 2GB SO-DIMMs) of 1066MHz DDR3 SDRAM; Hard drive6 500GB Serial ATA; 5400 rpm Slot-loading optical drive 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW) Graphics Intel HD Graphics5 and NVIDIA GeForce GT 360M with automatic graphics switching Graphics memory 512MB GDDR3 Video iSight camera; Mini DisplayPort output port with support for DVI, VGA, dual-link DVI, and HDMI (requires adapters, sold separately) Display 15.4-inch (diagonal) LED-backlit glossy widescreen display, 1440-by-900 resolution Expansion One FireWire 800 port (up to 800 Mbps), two USB 2.0 ports (up to 480 Mbps), SD card slot Audio Stereo speakers with subwoofers, omnidirectional microphone, audio line in minijack (digital/analog), audio line out/headphone minijack (digital/analog) Networking 10/100/1000BASE-T (Gigabit) Ethernet Wireless AirPort Extreme Wi-Fi (based on IEEE 802.11n specification)2; Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology Hardware accessories 85W MagSafe Power Adapter, AC wall plug, power cord 15-inch Configurations