iMac Retina 4K 21.5-inch 2019

The Apple iMac Retina 4K 21.5-inch 2019 is a personal computer that was designed, manufactured, and sold by Apple from 2019 to 2021 as part of the iMac series. The computer has been introduced on March 19, 2019, and its price started at $1299.

The new iMac features a 3.6 GHz Intel Core i3 or 3.0 GHz Intel Core i5 or 3.2 GHz Intel Core i7 processor, 8 GB / 16 GB or 32 GB of RAM, 21.5-inch Retina 4K LED-backlit IPS LCD Display, 1 TB hard drive, or Fusion Drive / 256 or 512 GB of the flash drive, Ambient Light Sensor, FaceTime HD camera, two Thunderbolt 3 ports, four USB 3.0 ports, an SDXD card slot, and 2 GB AMD Radeon Pro 555X graphics in the base model.

On March 20, 2021, Apple discontinues this iMac in configurations with 512 GB and 1 TB SSD of storage. From that day available are iMac configurations only with 256 GB SSD storage and 1 TB Fusion drive.

This iMac has been discontinued on April 20, 2021, and replaced by the new iMac M1 24-inch 2021.

Today iMac Retina 4K 21.5-inch 2019 is 5 years old!

iMac 21.5-inch 2019
Source: – iMac 21.5-inch 2019

iMac Retina 4K 21.5-inch 2019 Release Date and Original Price

IntroducedMarch 19, 2019
DiscontinuedMarch 20, 2021 (512 GB & 1 TB SSD)
April 20, 2021 (Entirely)
Model IdentifieriMac19,2
Model NumberA2116
Order NumberMRT32LL/A (3.6 GHz)
MRT42LL/A (3.0 GHz)
Original Price$1,299
ColorsSilver Aluminum
Weight12.3 Ibs.
5.579 KG
Dimensions17.7” H x 20.8” W x 6.9” D
44.95 cm H x 52.83 cm W x 17.52 cm D

Tech Specs


ProcessorIntel Core i3 8100 “Coffee Lake” (3.6 GHz)
Intel Core i5 8500 “Coffee Lake” (3.0 GHz)
Intel Core i7 8700 “Coffee Lake” (3.2 GHz)
Processor Speed3.6 GHz
3.0 GHz
3.2 GHz
Maximum Processor SpeedUp to 4.1 GHz (3.0 GHz)
Up to 4.6 GHz (3.2 GHz)
Number of Cores4 (Core i3)
6 (Core i5 and Core i7)
System BusIntel Direct Media Interface (DMI) at 8 GT/s
Cache6 MB L3 (Core i3)
9 MB L3 (Core i5)
12 MB L3 (Core i7)

Storage & Media

Storage1 TB HDD
1 TB Fusion Drive
256 GB SSD
512 GB SSD


Built-in Memory8 GB
16 GB
32 GB
Maximum Memory32 GB (Apple)
64 GB (Actual)
Memory Slots2 – PC4-19200 260-pin DDR4 SO-DIMM 2400 MHz (Core i3)
2 – PC4-31300 260-pin DDR4 SO-DIMM 2666 MHz (Core i5 and Core i7)
Interleaving SupportYes


Built-in Display21.5″ Retina 4K LED-backlit LCD IPS Display
Display GlassStandard
Color GamutWide color gamut P3
Brightness500 cd/m2
Pixel Density219 ppi
Resolutions4096 x 2304


Graphics CardAMD Radeon Pro 555X
AMD Radeon Pro 560X
AMD Radeon Pro Vega 20
Graphics Memory2 GB GDDR5 (AMD Radeon Pro 555X)
4 GB GDDR5 (AMD Radeon Pro 560X and AMD Radeon Pro Vega 20)
Display Connection2 – Thunderbolt 3
Display SupportSupport for up to two Thunderbolt displays
Display ModesDual display extended, video mirroring, and AirPlay Mirroring
External ResolutionUp to 4096 x 2304 (two displays) at 60 Hz
Up to 5120 x 2880 (one display) at 60 Hz
CameraFaceTime HD


Expansion Slots1 – Secure Digital (SDXC)
Hard Drive Interface1 – 6.0 Gbps Serial ATA (SATA)
1 – 8.0 GT/s NVMe PCIe x4


Ethernet10/100/1000BASE-T (RJ-45)
BluetoothBluetooth 4.2
USB4 – Up to 5 Gbps
Thunderbolt2 – Thunderbolt 3 (Up to 40 Gbps)
Audio In2 – Microphones
Audio Out1 – 3.5-mm analog/optical combo jack
2 – Built-in speakers
Display2 – Thunderbolt 3


Original OSmacOS 10.14.4
Maximum OSThe latest release of macOS
FirmwareIntel Extensible Firmware Interface
Unlock with Apple WatchSupported
Bundled SoftwaremacOS 10.14

Keyboard and Mouse

PeripheralsMagic Keyboard
Magic Mouse 2 or Magic Trackpad 2


Maximum Continuous Power205 W
Line Voltage100-240 V AC

Apple Support – iMac (Retina 4K, 21.5-inch, 2019): Technical Specifications

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