iMac with Retina 5K display - Computer Definition
The first iMac with a 5120x2880 screen resolution. Debuting in 2014, the 27" 5K iMac was introduced with up to a 3 GHz processor and 2TB hard disk or 512GB SSD storage. In 2015, 5K became the standard resolution for the 27" iMac, and 21.5" iMacs were offered in 2K and 4K models. See iMac, 4K resolution, 5K monitor and DTV.