iMac (Retina 5K, 27-inch, 2020) - Technical Specifications
Display
5K Retina display
27-inch (diagonal) 5K Retina 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
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
AMD Radeon Pro 5300 with 4GB of GDDR6 memory
3.3GHz
AMD Radeon Pro 5300 with 4GB of GDDR6 memory
3.8GHz
AMD Radeon Pro 5500 XT with 8GB of GDDR6 memory
Configurable to AMD Radeon Pro 5700 with 8GB of GDDR6 memory, AMD 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 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 AMD Radeon Pro 5700 or AMD 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
Configurable with Magic Keyboard with Numeric Keypad
Configurable with Magic Trackpad
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 5K Retina 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 Monterey introduces powerful new features to help you connect, share, and create like never before.
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 about Accessibility
Features include:
Voice Control
VoiceOver
Zoom
Increase 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
Shortcuts
Configure to Order
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
3.1GHz
Magic Trackpad
Magic Keyboard with Numeric Keypad
16GB, 32GB, 64GB, or 128GB memory upgrade
Nano-texture glass
10Gb Ethernet
3.3GHz
Magic Trackpad
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
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
AMD Radeon Pro 5700 with 8GB of GDDR6 memory
AMD 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. Learn more about iMac and the Environment
The 27-inch iMac with 5K Retina 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
Learn more
Read the 27-inch iMac with 5K Retina Display Environmental Report for detailed information on its environmental performance
Acoustic Performance
Declared noise emission values in accordance with ECMA-109
| Sound Power Level L W A,m (B) | Sound Pressure Level Operator Position L p A,m (dB) |
|---|---|---|
Idle | 2.3 (K V = 0.3) | 13 |
Wireless web | 2.3 (K V = 0.3) | 13 |
L W A,m is the mean A-weighted sound power level, rounded to the nearest 0.1 B.
L p A,m is the mean A-weighted sound pressure level measured at operator position (rounded to the nearest 1 dB).
1 B (bel) = 10 dB (decibel)
K v is the statistical adder for computing upper-limit of A-weighted sound power level.
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 .
The Wireless web test browses 25 popular websites.
Configuration tested: 3.8GHz 8-core Intel Core i7 processor, 8GB memory, 512GB storage, Radeon Pro 5500 XT Graphics.
1GB = 1 billion bytes and 1TB = 1 trillion bytes; actual formatted capacity less.
Weight varies by configuration and manufacturing process.
iMovie, GarageBand, Pages, Numbers, and Keynote are available on the Mac App Store. Downloading apps requires an Apple ID and a device that is compatible with the OS version required for each app.
Data accurate as of product launch.
Apple defines its restrictions on harmful substances, including definitions for what Apple considers to be “free of,” in the Apple Regulated Substances Specification. Every Apple product is free of PVC and phthalates with the exception of AC power cords in India, Thailand (for two-prong AC power cords), and South Korea, where we continue to seek government approval for our PVC and phthalates replacement.
Final assembly supplier sites for the 27-inch iMac with 5K Retina display are third-party certified as Zero Waste by UL LLC (UL 2799 Standard).