iMac - Technical Specifications

Display

Display

21.5-inch (diagonal) LED-backlit display
1920‑by‑1080 resolution with support for millions of colors

Retina 4K display

21.5-inch (diagonal) Retina 4K display
4096-by-2304 resolution with support for one billion colors
500 nits brightness
Wide color (P3)

Processor

2.3GHz

2.3GHz dual‑core Intel Core i5, Turbo Boost up to 3.6GHz

3.6GHz

3.6GHz quad‑core Intel Core i3

3.0GHz

3.0GHz 6-core Intel Core i5 (Turbo Boost up to 4.1GHz)

Memory

8GB of 2133MHz DDR4 memory

8GB of 2400MHz DDR4 memory

8GB of 2666MHz DDR4 memory

Storage1

256GB

256GB SSD

256GB

256GB SSD

256GB

256GB SSD

Graphics

Intel Iris Plus Graphics 640

Radeon Pro 555X with 2GB of GDDR5 memory

Radeon Pro 560X with 4GB of GDDR5 memory

Video Support and Camera

FaceTime HD camera

Simultaneously supports full native resolution on the built-in display at millions of colors (21.5-inch) or 1 billion colors (21.5-inch 4K) and:

One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors, or

Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or

Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors

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

Microphone

3.5 mm headphone jack

Connections and Expansion

3.5 mm headphone jack

SDXC card slot

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)

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 4.2 wireless technology

Size and Weight

21.5-inch iMac

Height: 45.0 cm (17.7 inches)

Width: 52.8 cm (20.8 inches)

Stand depth: 17.5 cm (6.9 inches)

Weight: 5.44 kg (12.0 pounds)2

21.5-inch iMac with Retina 4K display

Height: 45.0 cm (17.7 inches)

Width: 52.8 cm (20.8 inches)

Stand depth: 17.5 cm (6.9 inches)

Weight: 5.48 kg (12.1 pounds)2

Electrical and Operating Requirements

Line voltage: 100–240V AC

Frequency: 50Hz to 60Hz, single phase

Operating temperature: 10° to 35° C (50° to 95° F)

Relative humidity: 5% to 90% noncondensing

Operating altitude: tested up to 5000 meters (16,400 feet)

Limited Warranty and Service

Your iMac comes with 90 days of free telephone technical support and a one-year limited warranty. For more information, click here.

In the Box

iMac or
iMac with Retina 4K display

Magic Keyboard

Magic Mouse 2

Power cord

Lightning to USB Cable

Polishing cloth

Operating System

macOS

macOS is the operating system that powers every Mac. macOS Catalina gives you more of everything you love about Mac. So you can take everything you do above and beyond.

Learn more

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.

Features include:

  • Voice Control
  • VoiceOver
  • Zoom
  • Increase Contrast
  • Reduce Motion
  • Switch Control
  • Closed Captions
  • Text to Speech
Built-in Apps3
  • Photos
  • iMovie
  • GarageBand
  • Pages
  • Numbers
  • Keynote
  • Siri
  • Safari
  • Mail
  • FaceTime
  • Messages
  • Maps
  • Stocks
  • Home
  • Voice Memos
  • Notes
  • Calendar
  • Contacts
  • Reminders
  • Photo Booth
  • Preview
  • Music
  • Books
  • App Store
  • Time Machine
  • TV
  • Podcasts
  • Find My
  • QuickTime Player

iMac and the Environment

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

The 21.5-inch iMac with Retina 4K display is designed with the following features to reduce its environmental impact:4

Made with better materials

  • Enclosure made with recyclable, low-carbon aluminum
  • 50% or more recycled plastic in multiple components

Energy efficient

  • Meets ENERGY STAR requirements

Smarter chemistry

  • 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

Responsible packaging

  • 100% of virgin wood fiber comes from responsibly managed forests
 
Display

Retina 5K display

27-inch (diagonal) Retina 5K display
5120‑by‑2880 resolution with support for one billion colors
500 nits brightness
Wide color (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

3.8GHz

3.8GHz 8‑core 10th-generation Intel Core i7, Turbo Boost up to 5.0GHz

Memory

8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible

8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible

8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible

Storage1

256GB

256GB SSD

512GB

512GB SSD

512GB

512GB SSD

Graphics

Radeon Pro 5300 with 4GB of GDDR6 memory

Radeon Pro 5300 with 4GB of GDDR6 memory

Radeon Pro 5500 XT with 8GB of GDDR6 memory

Video Support and Camera

1080p FaceTime HD camera

Simultaneously supports full native resolution on the built-in display at 1 billion colors and:

One 6016-by-3384 (6K) external display at 60Hz with support for 1 billion colors, or

Two 6016-by-3384 (6K) external displays at 60Hz with support for 1 billion colors (requires Radeon Pro 5700 or Radeon Pro 5700 XT), or

One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors, or

Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or

Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors

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: 51.6 cm (20.3 inches)

Width: 65.0 cm (25.6 inches)

Stand depth: 20.3 cm (8 inches)

Weight: 8.92 kg (19.7 pounds)2

Electrical and Operating Requirements

Line voltage: 100–240V AC

Frequency: 50Hz to 60Hz, single phase

Operating temperature: 10° to 35° C (50° to 95° F)

Relative humidity: 5% to 90% noncondensing

Operating altitude: tested up to 5000 meters (16,400 feet)

Limited Warranty and Service

Your iMac comes with 90 days of free telephone technical support and a one-year limited warranty. For more information, click here.

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 operating system that powers every Mac. macOS Catalina gives you more of everything you love about Mac. So you can take everything you do above and beyond.

Learn more

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.

Features include:

  • Voice Control
  • VoiceOver
  • Zoom
  • Increase Contrast
  • Reduce Motion
  • 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

iMac and the Environment

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

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 aluminum
  • 60% recycled plastic in multiple components

Energy efficient

  • Meets ENERGY STAR requirements

Smarter chemistry

  • 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 final assembly suppliers are transitioning to 100% renewable energy for Apple production

Responsible packaging

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

Find the right iMac for you.

Compare all Mac models

21.5‑inch iMac

Starting at $1099

  • Up to 21.5" Retina 4K display
  • Up to 6-core Intel Core i7 processor
  • Up to 32GB memory
  • Up to 1TB SSD storage
  • Up to Radeon Pro Vega 20 with 4GB of HBM2 memory
Buy
New

27‑inch iMac

Starting at $1799

  • 27" Retina 5K display
  • Up to 10-core Intel Core i9 processor
  • Up to 128GB memory
  • Up to 8TB SSD storage
  • Up to Radeon Pro 5700 XT with 16GB of GDDR6 memory
Buy