Apple iMac 24-Inch “M1” 8 CPU/7 GPU/2 Ports Specs

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iMac (24″, M1 2021) – iMac21,2 – MJV93LL/A – A2439 – 3664

About this iMac

On April 20, 2021, Apple released the iMac 24-Inch M1 model. This MJV93LL/A iMac model is entirely different from its predecessors. This 2021 iMac features a completely new design with different internal architecture. Unlike its predecessors, this iMac model does not support significant internal upgrades.

Apple added the M1 processor in this iMac that harnesses the high performance of this model. It includes a total of 8 hybrid cores for increased productivity and overall execution speed. This model features a 16-core Neural Engine as well as a 7-core graphics processor which makes it significantly faster than the 2020 iMac models. The RAM of this device is 8 GB.

The default standard memory is 256 GB SSD. The display size of this iMac model is 23.5-Inch. It is a 4.5K Retina display with a 4480 x 2520 resolution. Additional features include an integrated 1080p FaceTime HD camera for high-quality video calls, a studio-quality three-mic array to record noise-free voice, and a high-fidelity six-speaker system with Spatial Audio with Dolby Atmos feature.

The connectivity for this iMac includes 2 Thunderbolt (USB 4 ports), a 3.5 mm headphone jack mounted on the left side of the iMac, Wi-Fi 6 802.11ax (backward compatible), standard Bluetooth 5.0, and Gigabit Ethernet. This latest iMac model is available in three two-tone color choices: blue, green, and pink. It is also offered in classic silver color.

This iMac model initially shipped with a wireless Magic Keyboard without Touch ID. It is small in size and is made of aluminum. The box has a numeric keypad and a wireless Magic Mouse with support for a multi-touch surface. However, the default mouse and keyboard could be upgraded to Magic Trackpad and Magic Keyboard with Touch ID.

The RAM can be upgraded to 16 GB of this model at the time of purchase. The internal storage is also upgradeable to either 512 GB or 1 TB SSD from the standard 256 GB. This iMac model’s operating system is fully compatible with the latest macOS version and originally came with macOS 11.3. The keyboard and mouse can also be upgraded for extra charges

3.2 GHz Apple M1

8 GB

256 GB SSD

N/A

Storage & Memory

This iMac model does not have RAM slots and features an 8 GB onboard RAM that can be upgraded to 16 GB at the time of purchase. It comes with 256 GB of storage memory that can be configured to 512 GB SSD or 1 TB SSD at the time of purchase.

Screen Size and Resolution

Apple introduced a 23.5-Inch widescreen Retina 4.5K display in this iMac model for a more natural viewing experience. The LED-backlit and TFT active matrix features are included in this model. It delivers 4480 x 2520 pixel resolution at 218 ppi and 500 nits brightness. The display of this model supports 1 billion colors, True Tone technology, and P3 wide color gamut. It also has an anti-reflective coating for eye comfort.

OS & Processor

According to Apple, this is the first iMac series to feature a 5 nm 64-bit M1 processor. This latest processor has 8 cores with 4 performance and 4 efficiency cores with a clock speed of 3.2 GHz. This model also features a 7-core GPU that is ideal for creative professionals. It also has a 16-core Neural Engine for faster machine learning processes. This iMac features a pre-installed macOS 11.3 (20E232)

Upgradability

The RAM can be upgraded to 16 GB of this model at the time of purchase. The internal storage is also upgradeable to either 512 GB or 1 TB SSD from the standard 256 GB. This iMac model’s operating system is fully compatible with the latest macOS version. The keyboard and mouse can also be upgraded for extra charges

Inclusive Features

First iMac to feature 3.2 GHz M1 processor
8 cores (4 performance cores and 4 efficiency cores)
7-core GPU
16-core Neural Engine
8 GB onboard RAM (upgradeable to 16 GB)
256 standard SSD storage (upgradeable to 512 or 1 TB)
Pre-installed macOS (support latest macOS version)
23.5-Inch Retina 4.5K display
Anti-reflective coating
High display resolution
Comes with mouse and keyboard
Three vibrant color options (blue, green, and pink) and an additional silver color
Several ports and connectivity options

Introduced: April 20, 2021		Discontinued: October 30, 2023
Screen Size and Resolution		Memory
Screen Size	23.5″ Widescreen	Level 1 Cache	192k+128k, 128k+64k x4
Resolution	4480×2520	Level 2/Level 3 Cache	12 MB, 4 MB x4
Processor		RAM Type	Unified
Processors	1 (8 Cores)	Min. RAM Speed	N/A
Architecture	64-Bit	Standard RAM	8 GB
Speed	3.2 GHz	Maximum RAM	16 GB
Type	Apple M1	RAM Slots	None
Processor Upgrade	Soldered	Motherboard RAM	8 GB
FPU	Integrated	Graphics
System Bus Speed	N/A	Video Card	7-Core
Cache Bus Speed	N/A	VRAM Type	Integrated
ROM/Firmware	Proprietary	Standard VRAM	Integrated
EFI Architecture	64-Bit	Maximum VRAM	Integrated
Storage		Inclusive Features and Ports
Standard Storage	256 GB SSD	Standard Optical Drive	None
Storage Speed	N/A	Standard Ethernet	None
Storage Dimensions	Soldered	Standard Modem	None
Storage Interface	Soldered	Standard Air Port	802.11ax (Wi-Fi 6)
Battery		Standard Bluetooth	5.0
Type	N/A	USB Port 3.0	2
Battery Life	N/A	Thunderbolt Ports	2
Description		Keyboard	Magic Keyboard
Case Type	All-in-One	Inclusive Input	Magic Mouse
Form Factor	24″ iMac M1	S-Video Output	None
Apple Order No	MJV93LL/A	Microphone	N/A
Apple Subfamily	iMac (24″, M1 2021)	Headphone	3.5 mm
Apple Model Number	A2439 (EMC 3664)	Sound Out	N/A
Model ID	iMac21,2	Power Adapter	N/A

Identifier reference: MJV93LL/A, A2439, EMC 3664, iMac21,2. Use these together because one Apple identifier can sometimes cover multiple configurations.

Last reviewed by Techable: August 14, 2025Identifiers checked: order number, A-number, EMC, and model identifier when available.

Model summary

This iMac at a glance

Family: iMac
Order Number: MJV93LL/A
Model Number: A2439
EMC: 3664
Model ID: iMac21,2
Chip: M1
Year: 2023

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Common questions

Is MJV93LL/A the same as A2439?

Not exactly. MJV93LL/A usually points to a specific retail configuration, while A2439 identifies the broader Apple hardware family. Always check the EMC and model identifier too.

What iMac is model A2439?

A2439 is the Apple A-number shown for this iMac family. Use the order number, EMC, and model identifier on this page to narrow the exact configuration.

What does EMC 3664 mean?

The EMC number is another Apple hardware identifier. It helps separate closely related models that may share a similar name, year, or A-number.

Can the RAM or SSD be upgraded?

Check the spec table for the exact configuration. Many newer Apple Silicon Macs have memory and storage integrated into the board, so RAM and SSD upgrades are often not practical after purchase.

What macOS versions work with this model?

Use the model identifier, release year, and processor family from the spec table when checking macOS compatibility. Compatibility can change as Apple releases new macOS versions.

Is this iMac still worth buying used?

It can be, depending on price, battery health, memory, storage, and condition. Compare this exact order number and model identifier against similar Techable listings before buying.

How much is this iMac worth?

Value depends on RAM, storage, battery health, cosmetic condition, accessories, and market demand. Use the SellMac path on this page for a quote or use the identifiers here when comparing resale prices.

What should I search if this page is not the exact configuration?

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