We are SPECIALIZED in wholesale supply of brand new 100% original China brand computer factory unlocked, Such as apple macbook, Samsung, asus, Toshiba, lenovo, Acer,HP,And so on. Order from www.padsell.com Product Description 2.5 GHz Quad-Core Intel Core i7 Processor (Turbo Boost up to 3.7 GHz, 6 MB shared L3 cache) 16 GB 1600 MHz DDR3L RAM; 512 GB PCIe-based Flash Storage 15.4-inch IPS Retina Display, 2880-by-1800 resolution Intel Iris Pro and NVIDIA GeForce GT 750M Graphics OS X Yosemite Screen Size 15.4 inches Screen Resolution 2880 x 1800 Max Screen Resolution 2880x1800 pixels Processor 2.5 GHz Intel Core i7 RAM 16 GB DDR3L Memory Speed 1600 MHz Hard Drive 512 GB SSD