iMac - Technical Specifications
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)
2.3GHz
2.3GHz dual‑core Intel Core i5, Turbo Boost up to 3.6GHz
3.6GHz
3.6GHz quad‑core Intel Core i3
Configurable to 3.2GHz 6-core Intel Core i7, Turbo Boost up to 4.6GHz
3.0GHz
3.0GHz 6-core Intel Core i5, Turbo Boost up to 4.1GHz
Configurable to 3.2GHz 6-core Intel Core i7, Turbo Boost up to 4.6GHz
8GB of 2133MHz DDR4 memory
Configurable to 16GB
8GB of 2400MHz DDR4 memory
Configurable to 16GB or 32GB
8GB of 2666MHz DDR4 memory
Configurable to 16GB or 32GB
256GB
256GB SSD
Configurable to 1TB Fusion Drive
256GB
256GB SSD
Configurable to 1TB Fusion Drive, 512GB SSD, or 1TB SSD
256GB
256GB SSD
Configurable to 1TB Fusion Drive, 512GB SSD, or 1TB SSD
Intel Iris Plus Graphics 640
Radeon Pro 555X with 2GB of GDDR5 memory
Radeon Pro 560X with 4GB of GDDR5 memory
Configurable to Radeon Pro Vega 20 with 4GB of HBM2 memory
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)
Stereo speakers
Microphone
3.5 mm headphone jack
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
Magic Keyboard
Magic Mouse 2
Configurable with Magic Keyboard with Numeric Keypad
Configurable with Magic Trackpad 2
Wi-Fi
802.11ac Wi-Fi wireless networking
IEEE 802.11a/b/g/n compatible
Bluetooth
Bluetooth 4.2 wireless technology
21.5-inch iMac
Height: 17.7 inches (45.0 cm)
Width: 20.8 inches (52.8 cm)
Stand depth: 6.9 inches (17.5 cm)
Weight: 12.0 pounds (5.44 kg)2
21.5-inch iMac with Retina 4K display
Height: 17.7 inches (45.0 cm)
Width: 20.8 inches (52.8 cm)
Stand depth: 6.9 inches (17.5 cm)
Weight: 12.1 pounds (5.48 kg)2
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)
Your iMac comes with 90 days of complimentary technical support and a one-year limited warranty. Purchase AppleCare+ for Mac to extend your coverage to three years from your AppleCare+ purchase date and add up to two incidents of accidental damage coverage every 12 months, each subject to a service fee of $99 for screen damage or external enclosure damage, or $299 for other repairable damage, plus applicable tax.
iMac or
iMac with Retina 4K display
Magic Keyboard
Magic Mouse 2
Power cord
Lightning to USB Cable
Polishing cloth
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.
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
- Siri and Dictation
- Switch Control
- Closed Captions
- Text to Speech
Configure your iMac with these options.
Looking for an iMac you can mount on a wall or an adjustable arm? Choose an iMac with a Built-in VESA Mount Adapter
iMac and the Environment
We take responsibility for the environmental footprint of our products throughout their life cycle. Learn more
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
Apple Trade In
Letting go of your old device is easy with Apple Trade In. If it’s in good shape, you can trade it in for Apple Store credit. If it’s not eligible for credit, we’ll recycle it responsibly at no cost to you. Good for you. Good for the planet.
Learn more
Read the 21.5-inch iMac with Retina 4K Display Environmental Report or the 21.5-inch iMac Environmental Report for detailed information on these products’ environmental performance.
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
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
8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
Configurable to 16GB, 32GB, 64GB, or 128GB
8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
Configurable to 16GB, 32GB, 64GB, or 128GB
8GB (two 4GB) of 2666MHz DDR4 memory; four SO-DIMM slots, user accessible
Configurable to 16GB, 32GB, 64GB, or 128GB
256GB
256GB SSD
512GB
512GB SSD
Configurable to 1TB or 2TB SSD
512GB
512GB SSD
Configurable to 1TB, 2TB, 4TB, or 8TB SSD
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
Configurable to Radeon Pro 5700 with 8GB of GDDR6 memory
Configurable to Radeon Pro 5700 XT with 16GB of GDDR6 memory
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)
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”
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
Magic Keyboard
Magic Mouse 2
Configurable with Magic Keyboard with Numeric Keypad
Configurable with Magic Trackpad 2
Wi-Fi
802.11ac Wi-Fi wireless networking
IEEE 802.11a/b/g/n compatible
Bluetooth
Bluetooth 5.0 wireless technology
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
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)
Your iMac comes with 90 days of complimentary technical support and a one-year limited warranty. Purchase AppleCare+ for Mac to extend your coverage to three years from your AppleCare+ purchase date and add up to two incidents of accidental damage coverage every 12 months, each subject to a service fee of $99 for screen damage or external enclosure damage, or $299 for other repairable damage, plus applicable tax.
iMac with Retina 5K display
Magic Keyboard
Magic Mouse 2
Power cord
Lightning to USB Cable
Polishing cloth
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.
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
- Siri and Dictation
- Switch Control
- Closed Captions
- Text to Speech
Configure your iMac with these options.
Looking for an iMac you can mount on a wall or an adjustable arm? Choose an iMac with a Built-in VESA Mount Adapter
iMac and the Environment
We take responsibility for the environmental footprint of our products throughout their life cycle. Learn more
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
Apple Trade In
Letting go of your old device is easy with Apple Trade In. If it’s in good shape, you can trade it in for Apple Store credit. If it’s not eligible for credit, we’ll recycle it responsibly at no cost to you. Good for you. Good for the planet.
Learn more
Read the 27-inch iMac with Retina 5K Display Environmental Report for detailed information on its environmental performance.