Apple 24" iMac 4.5k Retina 8C GPU M1 Chip 2021
24”
4.5K Retina display
Actual diagonal screen size is 23.5 in.
Apple M1 chip
8-core CPU
and up to 8‑core GPU.
Up to 16GB unified memory
1080p FaceTime HD camera with M1 ISP
Magic Keyboard with Touch ID1
Up to
2TB
storage 
Apple M1 chip
8-core CPU with 4 performance cores and 4 efficiency cores
7-core GPU
16-core Neural Engine
Apple M1 chip
8-core CPU with 4 performance cores and 4 efficiency cores
8-core GPU
16-core Neural Engine
Storage2
256GB SSD
Configurable to 512GB or 1TBfor 2-port model
256GB SSD or
512GB SSD
Configurable to 1TB or 2TBfor 4-port model
Price varies depending on storage capacity.
Memory
8GB unified memory
Configurable to 16GB unified memory
Display
24-inch 4.5K Retina display
4480-by-2520 resolution at 218 pixels per inch with support for 1 billion colors
500 nits brightness
Wide color (P3)
True Tone technology
Actual diagonal screen size is 23.5 in.
Camera
1080p FaceTime HD camera with M1 image signal processor
Video Support
Simultaneously supports full native resolution on the built-in display at 1 billion colors and:
One external display with up to 6K resolution at 60Hz
Thunderbolt 3 digital video output
Native DisplayPort output over USB‑C
VGA, HDMI, DVI, and Thunderbolt 2 output supported using adapters (sold separately)
Audio
Six-speaker sound system icon
High-fidelity six-speaker system with force-cancelling woofers
Wide stereo sound
Wide stereo sound
Support for spatial audio when playing music or video with Dolby Atmos
Support for spatial audio when playing music or video with Dolby Atmos3
Studio-quality three-mic icon
Studio-quality three-mic array with high signal-to-noise ratio and directional beamforming
Connections and Expansion
Two Thunderbolt / USB 4 ports with support for:
DisplayPort
Thunderbolt 3 (up to 40Gb/s)
USB 4 (up to 40Gb/s)
USB 3.1 Gen 2 (up to 10Gb/s)
Thunderbolt 2, HDMI, DVI, and VGA supported using adapters (sold separately)
3.5 mm headphone jack
Configurable with Gigabit Ethernet
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