Display

• Retina 5K display
• 27-inch (diagonal) Retina 5K display
• 5120‑by‑2880 resolution with support for one billion colours
• 500 nits brightness
• The wide colour (P3)
• True Tone technology
• Configurable with nano-texture glass

Processor

• 3.1GHz
  3.1GHz 6‑core 10th-generation Intel Core i5, Turbo Boost up to 4.5GHz
• 3.3GHz
  3.3GHz 6‑core 10th-generation Intel Core i5, Turbo Boost up to 4.8GHz
  Configurable to 3.6GHz 10-core 10th-generation Intel Core i9, Turbo Boost up to 5.0GHz
• 3.8GHz
  3.8GHz 8‑core 10th-generation Intel Core i7, Turbo Boost up to 5.0GHz
  Configurable to 3.6GHz 10-core 10th-generation Intel Core i9, Turbo Boost up to 5.0GHz

Memory

• 3.1GHz
  8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
  Configurable to 16GB, 32GB, 64GB, or 128GB
• 3.3GHz
  8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
  Configurable to 16GB, 32GB, 64GB, or 128GB
• 3.8GHz
  8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
  Configurable to 16GB, 32GB, 64GB, or 128GB

Storage¹

• 3.1GHz
  256GB SSD
• 3.3GHz
  512GB SSD
  Configurable to 1TB or 2TB SSD
• 3.8GHz
  512GB SSD
  Configurable to 1TB, 2TB, 4TB, or 8TB SSD

Graphics

• 3.1GHz
  Radeon Pro 5300 with 4GB of GDDR6 memory
• 3.3GHz
  Radeon Pro 5300 with 4GB of GDDR6 memory
• 3.8GHz
  Radeon Pro 5500 XT with 8GB of GDDR6 memory
  Configurable to Radeon Pro 5700 with 8GB of GDDR6 memory, Radeon Pro 5700 XT with 16GB of GDDR6 memory

Video Support and Camera

• 1080p FaceTime HD camera
• Simultaneously supports full native resolution on the built-in display at 1 billion colours and:
  • One 6016-by-3384 (6K) external display at 60Hz with support for 1 billion colours, or
  • Two 6016-by-3384 (6K) external displays at 60Hz with support for 1 billion colours (requires Radeon Pro 5700 or Radeon Pro 5700 XT), or
  • One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colours, or
  • Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colours, or
  • Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colours
• Thunderbolt 3 digital video output
• Native DisplayPort output over USB‑C
• Thunderbolt 2, HDMI, DVI, and VGA output supported using adapters (sold separately)

Audio

• Stereo speakers
• Studio-quality three-mic array with high signal-to-noise ratio and directional beamforming
• 3.5 mm headphone jack
• Support for “Hey Siri”

Connections and Expansion

• 3.5 mm headphone jack
• SDXC card slot (UHS-II)
• Four USB-A ports
• Two Thunderbolt 3 (USB-C) ports with support for:
  • DisplayPort
  • Thunderbolt (up to 40Gb/s)
  • USB 3.1 Gen 2 (up to 10Gb/s)
  • Thunderbolt 2, HDMI, DVI, and VGA supported using adapters (sold separately)
• 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
• Configurable to 10Gb Ethernet with support for 1Gb, 2.5Gb, 5Gb, and 10Gb Ethernet
• Kensington lock slot

Input

• Magic Keyboard
• Magic Mouse 2
• Configurable with Magic Keyboard with Numeric Keypad
• Configurable with Magic Trackpad 2

Wireless

• Wi-Fi
  802.11ac Wi-Fi wireless networking
  IEEE 802.11a/b/g/n compatible
• Bluetooth
  Bluetooth 5.0 wireless technology

Size and Weight

• Height: 20.3 inches (51.6 cm)
• Width: 25.6 inches (65.0 cm)
• Stand depth: 8 inches (20.3 cm)
• Weight: 19.7 pounds (8.92 kg)²

Electrical and Operating Requirements

• Line voltage: 100–240V AC
• Frequency: 50Hz to 60Hz, single phase
• Operating temperature: 50° to 95° F (10° to 35° C)
• Relative humidity: 5% to 90% noncondensing
• Operating altitude: tested up to 16,400 feet (5000 meters)

In the Box

• iMac with Retina 5K display
• Magic Keyboard
• Magic Mouse 2
• Power cord
• Lightning to USB Cable
• Polishing cloth

Operating System

macOS
macOS is the most advanced desktop operating system in the world. macOS Big Sur introduces a bold new design and major updates to apps — taking macOS to a new level of power and beauty.
Learn more – Operating System

Accessibility

Accessibility features help people with disabilities get the most out of their new iMac. With built-in support for vision, hearing, mobility, and learning, you can create and do amazing things.
Learn more – Accessibility

Features include:

• Voice Control
• VoiceOver
• Zoom
• Increase in Contrast
• Reduce Motion
• Siri and Dictation
• Switch Control
• Closed Captions
• Text to Speech

Built-in Apps³

• Photos
• iMovie
• GarageBand
• Pages
• Numbers
• Keynote
• Siri
• Safari
• Mail
• FaceTime
• Messages
• Maps
• News
• Stocks
• Home
• Voice Memos
• Notes
• Calendar
• Contacts
• Reminders
• Photo Booth
• Preview
• Books
• App Store
• Time Machine
• TV
• Music
• Podcasts
• Find My
• QuickTime Player

• 3.1GHz
  • Magic Trackpad 2
  • Magic Keyboard with Numeric Keypad
  • 16GB, 32GB, 64GB, or 128GB memory upgrade
  • Nano-texture glass
  • 10Gb Ethernet
• 3.3GHz
  • Magic Trackpad 2
  • Magic Keyboard with Numeric Keypad
  • 3.6GHz 10-core Intel Core i9 upgrade
  • 16GB, 32GB, 64GB, or 128GB memory upgrade
  • 1TB or 2TB SSD
  • Nano-texture glass
  • 10Gb Ethernet
• 3.8GHz
  • Magic Trackpad 2
  • Magic Keyboard with Numeric Keypad
  • 3.6GHz 10-core Intel Core i9 upgrade
  • 16GB, 32GB, 64GB, or 128GB memory upgrade
  • 1TB, 2TB, 4TB, or 8TB SSD
  • Radeon Pro 5700 with 8GB of GDDR6 memory
  • Radeon Pro 5700 XT with 16GB of GDDR6 memory
  • Nano-texture glass
  • 10Gb Ethernet

iMac and the Environment

We take responsibility for the environmental footprint of our products throughout their life cycle. 

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The 27-inch iMac with Retina 5K display is designed with the following features to reduce its environmental impact:⁴

Made with better materials

• 100% recycled tin in the solder of the main logic board
• Enclosure made with recyclable, low-carbon aluminium
• 60% recycled plastic in multiple components

Energy efficient

• Meets ENERGY STAR requirements

Smarter chemistry

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• Arsenic-free display glass
• Mercury-free LED-backlit display
• BFR-, PVC-,⁵ and beryllium-free

Green manufacturing

• Final assembly supplier sites do not generate any waste sent to landfill⁶
• All absolute assembly suppliers are transitioning to 100% renewable energy for Apple production

Responsible packaging

• 100% of virgin wood fibre comes from responsibly managed forests

Learn more

• Read the 27-inch iMac with Retina 5K Display Environmental Report for detailed information on its environmental performance

Acoustic Performance

Declared noise emission values by ECMA-109

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1. L _W A,m is the mean A-weighted sound power level, rounded to the nearest 0.1 B.
2. _Lp A,m is the mean A-weighted sound pressure level measured at the operator position (rounded to the nearest 1 dB).
3. 1 B (bel) = 10 dB (decibel)
4. K _v is the statistical adder for computing upper-limit of A-weighted sound power level.
5. The quantity, L _W A,c (formerly called L _W Ad) may be computed from the sum of L _W A,m and K _v.
6. The Wireless web test browses 25 popular websites.
7. Configuration tested: 3.8GHz 8-core Intel Core i7 processor, 8GB memory, 512GB storage, Radeon Pro 5500 XT Graphics