Apple iMac (Retina 4K, 21.5-inch, 2019)
The 2019 refresh of Apple's 21.5-inch iMac with a 4K Retina display, offered in two base configurations of 8th-generation Coffee Lake Intel Core i3/i5, configurable to a 6-core Core i7, with AMD Radeon Pro 500X-series graphics and soldered memory/storage.
Memory
- Standard
- 8 GB DDR4 (3.6GHz model: 2400MHz; 3.0GHz model: 2666MHz)
- Configurable to
- 16 GB or 32 GB on either base model
- Slots
- Soldered; not user-accessible (Apple tech specs list no SO-DIMM slots for this model, unlike the 27-inch 2019 iMac)
Storage
- Standard
- 256 GB SSD (either base model)
- Configurable to
- 1 TB Fusion Drive
Graphics
- 3.6GHz model
- AMD Radeon Pro 555X, 2 GB GDDR5
- 3.0GHz model
- AMD Radeon Pro 560X, 4 GB GDDR5; configurable to AMD Radeon Pro Vega 20, 4 GB HBM2
- External display support
- Full native resolution on the built-in display at 1 billion colours, plus: one 5120×2880 (5K) display at 60Hz (1 billion colours), or two 3840×2160 (4K UHD) displays at 60Hz (1 billion colours), or two 4096×2304 (4K) displays at 60Hz (millions of colours)
- Video output
- Thunderbolt 3 digital video output; native DisplayPort output over USB-C; Thunderbolt 2, HDMI, DVI and VGA output via adapters (sold separately)
Expansion
- Ports for expansion
- Two Thunderbolt 3 (USB-C) ports: DisplayPort, Thunderbolt up to 40Gb/s, USB 3.1 Gen 2 up to 10Gb/s
- Card slot
- SDXC card slot
- USB-A
- Four USB-A ports
Networking
- Wi-Fi
- 802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible
- Bluetooth
- Bluetooth 4.2 wireless technology
- Ethernet
- 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
Power
- Power supply
- Internal (built-in)
- Input
- 100–240V AC, 50Hz to 60Hz, single phase
Ports
- Thunderbolt 3
- Two Thunderbolt 3 (USB-C) ports
- USB-A
- Four USB-A ports
- Audio
- 3.5 mm headphone jack
- Card slot
- SDXC card slot
- Ethernet
- 10/100/1000BASE-T Gigabit Ethernet (RJ-45)
- Security
- Kensington lock slot
- Input devices
- Magic Keyboard and Magic Mouse 2 included; configurable with Magic Keyboard with Numeric Keypad and/or Magic Trackpad 2
Display
- Panel
- 21.5-inch (diagonal) Retina 4K display
- Resolution
- 4096×2304, support for 1 billion colours
- Brightness
- 500 nits
- Colour
- Wide colour (P3)
- Camera
- FaceTime HD camera
- Audio
- Stereo speakers; microphone
Physical
- Dimensions
- Height 17.7 in (45.0 cm); width 20.8 in (52.8 cm); stand depth 6.9 in (17.5 cm)
- Weight
- 12.1 lb (5.48 kg); varies by configuration
- Operating temperature
- 50° to 95° F (10° to 35° C)
- Relative humidity
- 5% to 90% noncondensing
- Operating altitude
- Tested up to 16,400 feet (5,000 m)
- Acoustic performance (ECMA-109)
- Idle: 2.0 B sound power / 12 dB sound pressure at operator position. Wireless web: 2.0 B / 12 dB. Hard drive seek: 2.1 B / 13 dB. (Configuration tested: 3.0GHz 6-core Intel Core i5, 8GB memory, 1TB Fusion Drive, Radeon Pro 560X)
- In the box
- iMac with Retina 4K display, Magic Keyboard, Magic Mouse 2, power cord, Lightning to USB Cable, polishing cloth
Management
- Model identifier
- iMac19,2
- Part numbers
- MRT3xx/A, MRT4xx/A, MHK23xx/A
Operating systems
- Shipped with
- macOS Mojave (at launch); later units shipped with macOS Big Sur
- Newest compatible
- macOS Sequoia (per Apple's "Identify your iMac model" support page)
Processors
- Intel Core i3-8100
- Intel Core i5-8500
- Intel Core i7-8700