The iMac 4K 21-inch Core i5 3.1GHz (Late 2015) is the first iMac 21-inch to be introduced with the Retina display with an impressive 4096 by 2304 resolution and P3 wide colour gamut. This update also included 5th generation "Broadwell" Intel Core processors, improved Intel Iris Pro 6200 graphics and faster 1867MHz LPDDR3 SDRAM. Connectivity has also been updated with Thunderbolt 2 and support for external displays with resolutions up to 4096 by 2304.
- 21.5-inch Retina 4K display (P3) with IPS technology (4096 by 2304 pixels)
- Intel Core i5 (5675R) 3.1GHz quad-core "Broadwell" processor (with Turbo boost 2.0 to 3.6GHz)
- 8GB RAM
- Mac OS latest release
- Intel Iris Pro 6200 Graphics with up to 1.5GB shared memory
- FaceTime HD Camera
- Four USB 3.0, two Thunderbolt 2, Gigabit Ethernet and SDXC card slot
- Wi-Fi 802.11ac and Bluetooth 4.0
- 12 Month Warranty