Intel Core M 1.1 GHz, Mac OX X 10.10 Yosemite, Intel HD Graphic 5300; 78-Key Full Size Keyboard, Multi-touch Gestures, Force Touch Trackpad 1.1 GHz Dual-Core Intel Core M3 Processor (Turbo Boost up to 2.2 GHz) with 4 MB shared L3 cache 12.0-inch TFT LED-backlit Active-Matrix Retina Display with IPS Technology, 2304 x 1440 pixel resolution (~226ppi pixel density)