Used iMac 21.5-inch Retina 4K 3.6GHz Quad-Core i3 16GB RAM/1TB SSD (2019) AppleCare+ to Nov 29 2022

Powerful graphics, fast processor, lots of RAM, Thunderbolt 3, fast Solid-state drive storage and the stunning  Retina 4K display

21.5-inch (diagonal) Retina 4K display
4096-by-2304 resolution with support for one billion colours
3.6GHz quad‑core Intel Core i3
16GB of 2400MHz DDR4 memory (upgrade)
1TB SSD Storage  (upgrade)
Radeon Pro 555X with 2GB of VRAM

Full Specifications