Home Desktops Apple iMac (Retina 4K, 21.5-inch, Late 2015) Apple · iMac
iMac (Retina 4K, 21.5-inch, Late 2015) Released October 2015
A compact Intel all-in-one with a 4K IPS display, integrated Iris Pro graphics and a choice of hard drive, Fusion Drive or SSD storage.
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Type All-in-one
Processor Intel Core i5 or i7
Memory 8 GB – 16 GB
Storage 256 GB – 2 TB
Screen 21.5″
Weight 5.68 kg What reviewers say Reviewers liked the sharp, wide-gamut screen in a smaller desktop and the updated peripherals. They advised choosing flash or Fusion storage over the slow standard hard drive. Integrated graphics, inaccessible memory and rear-facing ports limited flexibility.
From arstechnica.com , macworld.com and engadget.com
Processor Intel Core i5-5675R or Intel Core i7-5775R
CPU cores 4
Graphics Intel Iris Pro Graphics 6200
Memory 8 GB or 16 GB
Storage 256 GB to 2 TB
CPU 3.1 GHz quad-core Core i5 with Turbo Boost up to 3.6 GHz; configurable to 3.3 GHz quad-core Core i7 with Turbo Boost up to 3.8 GHz
Memory type 1867 MHz LPDDR3 onboard memory; 8 GB standard, configurable to 16 GB at purchase
Storage type 1 TB 5400-rpm hard drive; optional 1 TB or 2 TB Fusion Drive, or 256 GB or 512 GB SSD. The 1 TB Fusion Drive combines a hard drive with 24 GB of flash; the 2 TB version has 128 GB of flash. Display
Screen size 21.5″
Resolution 4096 × 2304
Panel IPS LCD
Display type LED-backlit Retina 4K display with IPS technology and support for millions of colours
Display features P3 colour gamut; Apple does not publish brightness or refresh rate in this model's specification sheet Connections
Ports 2 × Thunderbolt 2, 4 × USB-A, SD card slot, Ethernet, headphone jack
Ethernet 1 Gb/s
External displays Up to 1
Wi-Fi 802.11ac
Bluetooth 4.0
Camera FaceTime HD
Back ports Four USB 3 ports, two Thunderbolt 2 ports with Mini DisplayPort output, SDXC card slot, Gigabit Ethernet, 3.5 mm headphone and optical digital audio output; Kensington lock slot. HDMI, DVI, VGA and dual-link DVI require separately sold adapters.
External displays Built-in display at full native resolution alongside one external display up to 4096 × 2304; extended desktop and video mirroring
Speakers Stereo speakers; supports Apple iPhone headset with microphone
Microphones Dual microphones
Keyboard and mouse Rechargeable Magic Keyboard and Magic Mouse 2; optional Magic Trackpad 2 with Force Touch Design and power
Type All-in-one
Weight 5.68 kg
Width × depth × height 528 × 175 × 450 mm
Operating system macOS
Size and weight detail Dimensions include the stand; weight varies by configuration. A built-in VESA mount version was also available.
Power supply 100–240 V AC, 50–60 Hz, single phase
Noise Apple's 3.1 GHz Core i5, 8 GB, 1 TB hard-drive test configuration: operator-position sound pressure 11 dB at idle and wireless web, 11.5 dB during hard-drive seek
Materials Recyclable aluminium enclosure; arsenic-free display glass; mercury-free LED backlight
In the box iMac, Magic Keyboard, Magic Mouse 2, power lead and Lightning to USB cable Configurations Processor Memory Storage Storage type Intel Core i5-5675R 8 GB 1 TB Hard drive Intel Core i5-5675R 8 GB 1 TB Fusion Drive Intel Core i5-5675R 8 GB 2 TB Fusion Drive Intel Core i5-5675R 8 GB 256 GB SSD Intel Core i5-5675R 8 GB 512 GB SSD Intel Core i5-5675R 16 GB 1 TB Hard drive Intel Core i5-5675R 16 GB 1 TB Fusion Drive Intel Core i5-5675R 16 GB 2 TB Fusion Drive Intel Core i5-5675R 16 GB 256 GB SSD Intel Core i5-5675R 16 GB 512 GB SSD Intel Core i7-5775R 8 GB 1 TB Hard drive Intel Core i7-5775R 8 GB 1 TB Fusion Drive Intel Core i7-5775R 8 GB 2 TB Fusion Drive Intel Core i7-5775R 8 GB 256 GB SSD Intel Core i7-5775R 8 GB 512 GB SSD Intel Core i7-5775R 16 GB 1 TB Hard drive Intel Core i7-5775R 16 GB 1 TB Fusion Drive Intel Core i7-5775R 16 GB 2 TB Fusion Drive Intel Core i7-5775R 16 GB 256 GB SSD Intel Core i7-5775R 16 GB 512 GB SSD
Pros and cons Pros + 4K IPS display in a 21.5-inch desktop+ Two Thunderbolt 2 ports and four USB ports+ Rechargeable keyboard and mouse includedCons − Memory cannot be upgraded by the user− Standard storage is a 5400-rpm hard drive− Integrated graphics rather than a separate GPUNewer model: iMac (Retina 4K, 21.5-inch, 2017) .
