Apple iMac 4K A1418 21.5" i3-8100 3.6GHz, 8GB RAM, 1TB HDD 2019

Specs at a Glance:

• 21.5" 4K 4096x2304 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 4K" display
• Intel Core i3-8100 3.6GHz quad-core "Coffee Lake" processor
• 8GB DDR4 RAM
• 1TB Hard Drive
• Radeon Pro 555X 2GB Graphics
• FaceTime HD Camera
• Four USB 3, two Thunderbolt 3 (Airplay supported), Gigabit Ethernet and SDXC card slot
• Wi-Fi 802.11ac and Bluetooth 4.0
• macOS 11 Big Sur
• Apple Wireless Keyboard and Magic Mouse

More spec details below, courtesy of our friends at EveryMac.

The iMac "Core i3" 3.6 21.5-Inch Aluminum (Retina 4K, 2019/Coffee Lake) features a 14-nm "Coffee Lake" 3.6 GHz Intel "Core i3" processor (I3-8100) with four independent processor "cores" on a single chip, a 6 MB shared level 3 cache, 8 GB of 2400 MHz DDR4 SDRAM that is reportedly "built into the computer" -- but it actually can be upgraded later, it is just needlessly difficult -- a 1 TB (5400 RPM) hard drive (256 GB SSD standard with an optional 1 TB "Fusion" Drive, which combines a 32 GB SSD and a 1 TB HDD, for the same price starting on August 4, 2020), and a Radeon Pro 555X graphics processor with 2 GB of dedicated GDDR5 video memory. It also has a built-in "FaceTime HD" webcam and stereo speakers.

This model has a 21.5" 4096x2304 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 4K" display (that runs "pixel doubled" to look like 2048x1152). 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 4.2. It does not have a T2 chip.