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Silver aluminium all-in-one with 21.5 inch display

Apple

Apple iMac MK442LL/A 21.5" desktop PC 3.2GHz i5 8GB 1TB Fusion Drive

SKU CH-NT27-M2CHJ

A 21.5-inch all-in-one desktop with a 3.2 GHz Intel Core i5, 8 GB memory, 1 TB Fusion Drive and macOS Monterey

  • Screen size21.5 in (54.6 cm)
  • RAM capacity8 GB
  • Form factorAll-in-One
  • Operating systemMacOS Monterey
  • Hard drive1 TB
  • Touch inputNo
  • Crisp 1920 x 1080 Full HD display for vivid detail
  • 2GHz Intel Core i5 quad-core processor drives responsive multitasking
  • 8GB RAM keeps everyday workflows running smoothly
  • 1TB Fusion Drive blends SSD speed with HDD capacity
  • macOS Monterey adds security and Apple ecosystem integration

All-in-one desktop for everyday work

The Apple iMac MK442LL/A is a 21.5-inch all-in-one desktop from 2015 designed for home offices, students and professionals who want a single tidy unit. It ships with macOS Monterey, a 3.2GHz Intel Core i5 quad-core processor, 8GB of RAM and a 1TB Fusion Drive that blends SSD responsiveness with hard-drive capacity.

Simple setup with fixed internals

Because the computer is built into the display, installation means only placing it on a desk and connecting power and peripherals. The memory is not user-upgradable and the Fusion Drive cannot be swapped without specialised tools, so buyers who need more RAM or a different storage configuration should look elsewhere.

Steady performance for sustained tasks

The quad-core processor maintains its 3.2GHz speed during extended productivity workloads such as document editing, web browsing and media playback. The Fusion Drive keeps boot times and application launches quick over long sessions, while the aluminium chassis dissipates heat without loud fan noise.

How it compares

Measured against everything we stock in Tower & Compact Desktop PCs, at today’s prices. Recalculated every night.

Price $247.99
Cheaper than about 81% of the 14,711 comparable items (median $494.99).
Screen size 21.5 in (54.6 cm)
Lower than about 90% of the 2,278 comparable items (median 22 in).
RAM capacity 8 GB
Lower than about 80% of the 13,125 comparable items (median 16 GB).

Specifications

Product
Brand nameApple
Product lineApple iMac MK442LL/A 21.5 in (Late 2015)
Model nameApple iMac MK442LL/A (Late 2015)
Part numberMK442LL/A
Year of release2015
Product typeAll-in-One PC
Memory
RAM capacity8 GB
Storage
Hard drive1 TB
Display
Screen size21.5 in (54.6 cm)
Touch inputNo
Type of screenNon-Touch Screen
Size & build
Form factorAll-in-One
Overall dimensions(H - 17.7 × W - 20.8 × D - 6.9 in)
Product weight12.5 lb (5.67 kg)
Software
Operating systemMacOS Monterey

Questions about this item

How can I confirm the 21.5-inch Full HD display is running at its native 1920 x 1080 resolution after setup?

Open System Preferences, select Displays, and verify the resolution is set to 1920 x 1080 for the built-in screen.

Which accessories are included in the box and which must be purchased separately for the MK442LL/A?

The all-in-one includes the display, Magic Keyboard, Magic Mouse 2, power cord, and Lightning to USB cable; no other items are bundled.

How do I decide between the 8GB memory and 1TB Fusion Drive configuration versus other capacities for this Late 2015 iMac?

This model is offered only with 8GB RAM and a 1TB Fusion Drive; no alternative memory or storage options exist for the MK442LL/A.

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