The iMac "Core i5" 3.1 27-Inch Aluminum (Retina 5K, 2019/Coffee Lake) is equipped with a 14-nm "Coffee Lake" 3.1 GHz Intel "Core i5" processor (I5-8600). It has six independent cores on a single chip, a shared 9 MB level 3 cache, 8 GB of easily upgradeable 2666 MHz DDR4 SDRAM, a 1 TB Fusion Drive, and a Radeon Pro 575X graphics processor with 4 GB of dedicated GDDR5 video memory. The system also includes a built-in "FaceTime HD" webcam and stereo speakers.
This model features a 27" 5120x2880 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 5K" display. The aluminum rear casing is thicker in the middle and tapers to a slim 5 mm at the edges.
Connectivity options include four USB 3.0 ports, dual Thunderbolt 3 (USB-C) ports, Gigabit Ethernet, 802.11ac Wi-Fi, and Bluetooth 4.2. This model does not feature a T2 chip.
Compared to the model it replaced, this iMac is physically and internally very similar, but it benefits from a more advanced processor, architecture, and graphics processor.
By default, the "2019" iMacs were shipped with a compact aluminum Apple Magic Keyboard and the multi-touch "Magic Mouse 2". For an extra US$30, the keyboard could be upgraded to the "Magic Keyboard with Numeric Keypad," and for an additional US$50, the Magic Mouse 2 could be exchanged for a "Magic Trackpad 2," which provides multi-touch and pressure-sensitive "Force Touch" functionality.