The iMac "Core i7" 3.8 27-Inch Aluminum (Retina 5K, 2020/Comet Lake; AMD Radeon Pro 5700/5700 XT) features a 14-nm "Comet Lake" 3.8 GHz Intel "Core i7" processor (I7-10700K) with eightindependent processor "cores" on a single chip, a 16 MB shared level 3 cache, a T2 Security Chip, 8 GB of easy to upgrade 2666 MHz DDR4 SDRAM, a default 512 GB onboard SSD, and either a Radeon Pro 5700 graphics processor with 8 GB of dedicated GDDR6 video memory or an Radeon Pro 5700 XT graphics processor with 16 GB of dedicated GDDR6 video memory. It also has a built-in 1080p "FaceTime HD" webcam, a studio-quality three-mic array, and stereo speakers.

This model has a 27" 5120x2880 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 5K" display with True Tone technology. The rear of the case is aluminum and is thicker in the middle and tapers to a razor thin 5 mm at the edges.

Connectivity includes four USB 3.0 ports, dual Thunderbolt 3 (USB-C) ports, Gigabit Ethernet, 802.11ac Wi-Fi, and Bluetooth 5.0.