27 inch iMac Retina 5K - Late 2015 Model 17,1 Processor: 3.3GHz quad‑core Intel Core i5 (Turbo Boost up to 3.9GHz) Memory: 16GB 1867 MHz DDR3 Graphics: AMD Radeon R9 M395 2048 MB Storage: 3TB Fusion Drive Magic Keyboard (wireless) Magic Trackpad 2 Running macOS Mojave 10.14.2 Clean install. Ready to configure to your own needs.