Processor                                2.2GHz Intel Core i7 Quad-Core 4th-Gen Crystalwell Cache L3: 6MB Memory OnboardType: 1600MHz DDR3L SDRAM Installed: 16GB Graphics Card Intel Iris Pro Graphics. AMD Radeon R9 M370X with 2GB GDDR5 memory Type Widescreen Size 15.4" Backlight LED Aspect Ratio 16:10 Finish Glossy Native Resolution 2880 x 1800 Supported Resolutions 2880 x 1800 at 16:10 Aspect Ratio 1920 x 1200 at 16:10 Aspect Ratio 1680 x 1050 at 16:10 Aspect Ratio 1280 x 800 at 16:10 Aspect Ratio 1024 x 640 at 16:10 Aspect Ratio External Resolution Up to 2560 x 1600 Hard Drive Installed: 512GB Type: PCIe-Based Flash Included Software OS X Yosemite includes AirDrop AirPlay Dictation Gatekeeper Notification Center Facebook Integration Twitter Integration Mail Drop Multiple Display Support Finder Tabs and Tags iCloud iCloud Keychain iCloud Drive Family Sharing Dashboard Mission Control Spotlight Search Safari Power Saver App Nap Power Nap Compressed Memory Built-in Sharing Power Requirements AC: 100-240 V AC. 50-60HzConsumption: 85W