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Silver aluminium all-in-one desktop with 21.5 inch Retina 4K display

Apple

Apple iMac 21.5" Retina 4K i5-8500 8GB 1TB MRT42LL/A

SKU CH-DTJN-NNGQE

A 21.5-inch Retina 4K all-in-one desktop with a 3.0 GHz Intel Core i5-8500 processor, 8GB DDR4 memory, 1TB storage and Radeon Pro 560X graphics

  • TypeAll-in-One PC
  • Operating SystemmacOS
  • ColorSilver
  • MonitorMonitor not included
  • GPU/VGA TypeNo
  • SSDNo
  • 5-inch Retina 4K display delivers 4096x2304 resolution for sharp visuals
  • 0 GHz Intel Core i5-8500 hexa-core processor handles demanding tasks smoothly
  • 8GB DDR4 RAM at 2666 MHz supports responsive multitasking
  • Radeon Pro 560X with 4GB video memory powers graphics-intensive workloads
  • Two Thunderbolt 3 ports plus four USB 3.1 Gen 2 ports connect peripherals fast

21.5-inch Retina 4K all-in-one

The 2019 Apple iMac combines a 3.0 GHz Intel Core i5-8500 six-core processor with a 4096x2304 display in a single silver chassis. It ships with 8 GB of 2666 MHz DDR4 memory and a 1 TB hard drive. The Radeon Pro 560X graphics card provides 4 GB of dedicated video memory. This configuration suits home-office users who want a tidy desk setup without separate components.

Radeon Pro 560X and Thunderbolt 3 ports

The discrete Radeon Pro 560X GPU handles creative workloads and light gaming better than integrated graphics alone. Two Thunderbolt 3 ports deliver up to 40 Gb/s bandwidth for fast external storage or high-resolution displays. Four USB 3.0 ports, Gigabit Ethernet and a 3.5 mm headphone jack complete the wired connectivity. No internal SSD is present, so boot and application launch speeds rely on the mechanical drive.

Mechanical drive and fixed memory limits

The 1 TB hard drive offers capacity but lacks the access speed of solid-state storage, which affects system responsiveness. Memory is not user-upgradable after purchase, locking the system at 8 GB for its lifespan. The 21.5-inch panel does not support touch input. Buyers who need faster storage, more than 8 GB of RAM or a touchscreen should consider alternative form factors.

Highlights

  • 5-inch Retina 4K display delivers 4096x2304 resolution for sharp visuals
  • 0 GHz Intel Core i5-8500 hexa-core processor handles demanding tasks smoothly
  • 8GB DDR4 RAM at 2666 MHz supports responsive multitasking
  • Radeon Pro 560X with 4GB video memory powers graphics-intensive workloads
  • Two Thunderbolt 3 ports plus four USB 3.1 Gen 2 ports connect peripherals fast

Specifications

TypeAll-in-One PC
Operating SystemmacOS
ColorSilver
MonitorMonitor not included
GPU/VGA TypeNo
SSDNo
HDDNo
BrandApple
SeriesAIO-APIMAC21-I5/G8-8-1TB-ACC
ModelMRT42LL/A-ACC
Part NumberAIO-APIMAC21-I5/G8-8-1TB-ACC
Screen Size21.5"
TouchscreenNo
Weight12.5000

Questions about this item

Is the 8 GB of 2666 MHz DDR4 memory user-upgradeable on the MRT42LL/A?

The 8 GB of 2666 MHz DDR4 memory is built into the computer and cannot be upgraded by the user.

What limits sustained performance on the 3.0 GHz Intel Core i5-8500 with the Radeon Pro 560X 4 GB GPU?

The all-in-one thermal design limits sustained performance when the 3.0 GHz Intel Core i5-8500 and Radeon Pro 560X 4 GB GPU share the internal cooling system.

How loud does the cooling system get when the 21.5-inch Retina 4K display and i5-8500 run all day?

The cooling fans remain quiet during light use but become audible when the 3.0 GHz i5-8500 and Radeon Pro 560X sustain heavy workloads for extended periods.

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