iMac (27-inch, Retina 5K, 3.1 GHz, 2020) (2020)
Apple announced this 27-inch iMac on August 4, 2020. Online orders opened that day, with Apple Store sales announced that week; this does not establish an individual delivery. This entry separates the 3.1 GHz configuration with Radeon Pro 5300 · 4 GB GDDR6 from the other simultaneous versions.

Resized, no crop or retouching.
Original labelled schematic, not a photograph or scale drawing.
Specs
| Announcement | 2020-08-04 |
| CPU | Intel Core i5 (6-core) · 3.1 GHz |
| Display | 27″ · 5120 × 2880 · one billion colors · P3 · 500 nits |
| Standard and maximum RAM | 8 GB DDR4 · 2666 MHz · 128 GB (official maximum) |
| Disk | 256 GB SSD |
| Graphics | Radeon Pro 5300 · 4 GB GDDR6 |
| Camera and audio | FaceTime HD 1080p · 3 microphones |
| Ports | 4 USB-A · 2 Thunderbolt 3 (USB-C) · SDXC UHS-II |
| Wired network | Gigabit Ethernet 10/100/1000 |
| Wireless | 802.11ac Wi-Fi · Bluetooth 5.0 |
| Included input devices | Magic Keyboard · Magic Mouse 2 |
| Display glass | Standard; nano-texture optional |
History and documentation
Apple announced this 27-inch iMac on August 4, 2020. Online orders opened that day, with Apple Store sales announced that week; this does not establish an individual delivery. This entry separates the 3.1 GHz configuration with Radeon Pro 5300 · 4 GB GDDR6 from the other simultaneous versions.
Design and specifications
This standard configuration has a 3.1 GHz Intel Core i5 (6-core), 8 GB of 2666 MHz DDR4 and 256 GB SSD. Graphics are Radeon Pro 5300 · 4 GB GDDR6. Apple lists a 128 GB memory maximum, not standard installed RAM. The storage described is standard for this configuration, not an order option.
Use and context
Includes a 1080p FaceTime HD camera, three microphones with beamforming and stereo speakers. It has four USB-A ports, two Thunderbolt 3 USB-C ports, SDXC UHS-II, a 3.5 mm headphone jack and Gigabit Ethernet; 10 Gb Ethernet is optional. Connectivity includes 802.11ac Wi-Fi and Bluetooth 5.0. Magic Keyboard and Magic Mouse 2 are included.
Notes and image
The display offers 5120 × 2880 · one billion colors · P3 · 500 nits and True Tone, which adjusts color temperature to ambient light. Nano-texture glass is optional, not standard. T2 enables SSD encryption and boot verification according to Apple. The announcement places Big Sur as a free fall update; neither Big Sur nor the Monterey now listed by Support is treated as the launch system.
Sources
- Apple · 2020-08-04
- Apple · 2020
- dimensionapple.com · Original schematic illustration
- imac-retina-5k-27-2019
- imac-retina-5k-27-2019 ⇄ iMac (27-inch, Retina 5K, 3.1 GHz, 2020)