Display
- 21.5-inch (diagonal) Retina 4K display
- 4096-by-2304 resolution with support for 1 billion colors
- 500 nits brightness
- Wide color (P3)
Processor
3.6 GHz configuration
- 3.6 GHz quad-core Intel Core i3
- Configurable to 3.2 GHz 6-core Intel Core i7 (Turbo Boost up to 4.6 GHz)
3.0 GHz configuration
- 3.0 GHz 6-core Intel Core i5 (Turbo Boost up to 4.1 GHz)
- Configurable to 3.2 GHz 6-core Intel Core i7 (Turbo Boost up to 4.6 GHz)
Memory
3.6 GHz configuration
- 8 GB 2400 MHz DDR4 memory
- Configurable to 16 GB or 32 GB
3.0 GHz configuration
- 8 GB 2666 MHz DDR4 memory
- Configurable to 16 GB or 32 GB
Storage
3.6 GHz configuration
- 256 GB SSD
- Configurable to 1 TB Fusion Drive
3.0 GHz configuration
- 256 GB SSD
- Configurable to 1 TB Fusion Drive
Graphics
3.6 GHz configuration
- Radeon Pro 555X with 2 GB GDDR5 memory
3.0 GHz configuration
- Radeon Pro 560X with 4 GB GDDR5 memory
- Configurable to Radeon Pro Vega 20 with 4 GB HBM2 memory
Video Support and Camera
- FaceTime HD camera
- Simultaneous support for full native resolution on the built-in display (millions of colors on standard 21.5" and 1 billion colors on 21.5" 4K) and:
One external display with 5120 x 2880 (5K) at 60 Hz with 1 billion colors, or
Two external displays with 3840 x 2160 (4K UHD) at 60 Hz with 1 billion colors, or
Two external displays with 4096 x 2304 (4K) at 60 Hz with 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
- Built-in microphone
- 3.5 mm headphone jack
Ports 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 40 Gb/s)
USB 3.1 Gen 2 (up to 10 Gb/s)
Thunderbolt 2, HDMI, DVI, and VGA output via adapters (sold separately)
- 10/100/1000BASE-T Gigabit Ethernet (RJ-45)
- 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 wireless networking; compatible with IEEE 802.11a/b/g/n
- Bluetooth: Bluetooth 4.2 wireless technology
Size and Weight
- Height: 45 cm
- Width: 52.8 cm
- Depth (including stand): 17.5 cm
- Weight: 5.48 kg
Power and Operating Requirements
- Line voltage: 100–240 V AC
- Frequency: 50–60 Hz, single phase
- Operating temperature: 10° to 35° C
- Relative humidity: 5% to 90% noncondensing
- Operating altitude: tested up to 5000 m
In the Box
- iMac with 21.5-inch Retina 4K display
- Magic Keyboard
- Magic Mouse 2
- Power cord
- Lightning to USB cable
- Polishing cloth
Operating System
- macOS Big Sur, with refreshed design and updated built-in apps
Accessibility
Accessibility features help people with disabilities get the most out of their iMac.
With built-in support for vision, hearing, mobility, and learning, you can create and do amazing things.
- Voice Control
- VoiceOver
- Zoom
- Increase Contrast
- Reduce Motion
- Siri and Dictation
- Switch Control
- Closed Captions for speech and sound
- Text to Speech
Built-in Apps
- Photos
- iMovie
- GarageBand
- Pages
- Numbers
- Keynote
- Siri
- Safari
- Mail
- FaceTime
- Messages
- Maps
- Stocks
- Home
- Voice Memos
- Notes
- Calendar
- Contacts
- Reminders
- Photo Booth
- Preview
- Books
- App Store
- Time Machine
- TV
- Music
- Podcasts
- Find My
- QuickTime Player
Configure to Order
Configure your iMac with these options:
3.6 GHz configuration
- Magic Trackpad 2
- Magic Keyboard with Numeric Keypad
- 3.2 GHz 6-core Intel Core i7
- 16 GB or 32 GB memory
- 1 TB Fusion Drive
- 512 GB or 1 TB SSD
3.0 GHz configuration
- Magic Trackpad 2
- Magic Keyboard with Numeric Keypad
- 3.2 GHz 6-core Intel Core i7
- 16 GB or 32 GB memory
- 1 TB Fusion Drive
- 512 GB or 1 TB SSD
- Radeon Pro Vega 20 with 4 GB HBM2 memory
Environment
The 21.5-inch iMac with Retina 4K display is designed to reduce its environmental impact.
Materials
- Enclosure made from recyclable, low-carbon aluminum
- 50% or more recycled plastic in multiple components
Energy efficiency
- Meets ENERGY STAR requirements
Smarter chemistry
- Arsenic-free display glass
- Mercury-free LED-backlit display
- Free of brominated flame retardants, PVC, and beryllium
Green manufacturing and packaging
- Final assembly supplier factories send no waste to landfill
- 100% of virgin wood fiber in packaging comes from responsibly managed forests
Acoustic Performance
- Declared noise emission values in accordance with ECMA-109
- Sound power level LWA,m (B): 2.0 (KV = 0.3) idle and hard drive access; 2.1 (KV = 0.3) wireless web
- Sound pressure level at operator position LpA,m (dB): 12 dB idle and hard drive access; 13 dB wireless web
