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Should I upgrade my iMac (24-inch, M3, 2023, Four ports)?

nearly 3 years old · Runs macOS 27 Golden Gate, the current macOS

Quick look

Price
£1,5992launch price
Chip
M3chip
CPU
8-coreCPU
GPU
10-coreGPU
Memory
8GBunified memory, base
Storage
256GBstorage, base
Display
24-inchdisplay
Released
7 November 20232ReleasedIn Apple Stores; orderable online from 30 October 2023.
Security updates
Not available3Security updates

Each figure is from the source marked1 unless it carries its own number.

Software support

Security updates
Not available3
macOS
macOS 27 Golden Gate, the current macOS

No newer Mac with a store price we hold

We hold no Apple UK store price for any Mac in the iMac 24-inch line, so this page names no newer Mac to set the iMac M3 (24-inch, 2023, Four ports) against. That is a gap in what we hold, not a statement about what Apple sells.

Specifications

Body

Dimensions
461 x 547 x 147 mm
Weight
4.48 kg
Colours
Blue, Green, Pink, Silver, Yellow, Orange, Purple
Ports
Two Thunderbolt / USB 4 ports, two USB 3 ports (up to 10Gb/s), 3.5 mm headphone jack, Gigabit Ethernet
Thunderbolt ports
2
Thunderbolt version
Thunderbolt 3
HDMI
No HDMI port.4
SD card slot
No SD card slot.4
Headphone jack
Yes
Keyboard
Magic Keyboard with Touch ID
Touch ID
Yes

Display

Display size
24 in
Resolution
4480 x 2520
Pixel density
218 ppi
Display type
4.5K Retina display
Brightness
500 nits
Wide colour (P3)
Yes
Nano-texture option
No nano-texture display option.4

Chip and memory

Chip
Apple M3 chip
Apple silicon
Yes
CPU cores
8
Performance cores
4
Efficiency cores
4
GPU cores
10
Neural Engine cores
16
Chip options
M3 with 8-core CPU and 10-core GPU
Memory (base)
8GB
Memory (maximum)
24GB
Memory options
8GB, 16GB or 24GB
Memory upgradeable by user
No, as Apple documents5
Memory bandwidth
100 GB/s
Storage (base)
256GB
Storage (maximum)
2TB
Storage options
256GB, 512GB, 1TB or 2TB
Media engine
Hardware-accelerated H.264, HEVC, ProRes and ProRes RAWvideo decode enginevideo encode engineProRes encode and decode engineAV1 decode

Battery and power

Included power adapter
143 W6

Connectivity

Wi-Fi
Wi‑Fi 6E (802.11ax)
Bluetooth
5.3
Ethernet
Gigabit Ethernet
External displays (base)
1

Camera and audio

Camera
1080p FaceTime HD camera
Speakers
High-fidelity six-speaker system with force-cancelling woofers
Microphones
Studio-quality three-mic array with high signal-to-noise ratio and directional beamforming

Platform

Newest macOS
macOS 27 Golden Gate7
Model identifier
Mac15,58
Part numbers
MQRJ3xx/A, MQRK3xx/A, MQRL3xx/A, MQRM3xx/A, MQRN3xx/A, MQRP3xx/A, MQRQ3xx/A, MQRR3xx/A, MQRT3xx/A, MQRU3xx/A, MQRV3xx/A, MQRW3xx/A, MQRX3xx/A, MQRY3xx/A9
Model year
2023

Benchmarks

Geekbench 7 (CPU, single-core)
2,74810
Geekbench 7 (CPU, multi-core)
11,67110
Geekbench 7 (Metal)
48,07010

An iMac has no battery, so battery rows do not apply.

Software support

Feature updates until
Not available3
Security updates until
Not available3
Basis
our inference from history11

Trade-in and used prices

CeX pays, grade A
£426 cash / £519 voucher12Base configuration
CeX sells, grade A
£775–£80012Base configuration, cheapest of 7 listings linked, out of stock online and in store when read

More

Sources

  1. Apple Support (UK) — iMac (24-inch, 2023, Four ports) - Tech Specs · Default for iMac (24-inch, M3, 2023, Four ports) · Apple’s figure · read 15 Sep 2026

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  2. Apple Newsroom (UK) — Apple supercharges 24-inch iMac with new M3 chip · Apple’s figure · read 15 Sep 2026

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  3. Apple publishes no date for the end of updates, and this site does not guess one. Checked: endoflife.date. Read 22 Sep 2026

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  4. No HDMI port. No SD card slot. No nano-texture display option. Checked: Apple Support (UK) — iMac (24-inch, 2023, Four ports) - Tech Specs. Read 9 Oct 2026

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  5. Apple Support (UK) — Install memory in an iMac · Apple’s figure · read 18 Oct 2026

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  6. Apple Support (UK) — iMac (24-inch, 2023, Four ports) - Tech Specs · Apple’s figure · read 9 Oct 2026

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  7. Apple Support (UK) — macOS 27 Golden Gate is compatible with these computers · Apple’s figure · read 22 Sep 2026

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  8. Apple Support (UK) — Identify your iMac model · Apple’s figure · read 15 Sep 2026

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  9. Apple Support (UK) — Identify your iMac model · Apple’s figure · read 18 Oct 2026

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  10. Geekbench Browser (Primate Labs) · third-party figure · read 11 Oct 2026

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  11. Apple’s macOS 27 Golden Gate compatibility list names this Mac. endoflife.date says Apple usually provides security updates for the latest three macOS releases, but that this isn’t consistently applied; Apple publishes no end date. Source: endoflife.date. Read 22 Sep 2026

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  12. CeX — Trade-in, Grade A, cash · third-party figure · read 3 Nov 2026

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Not published by Apple

iMac (24-inch, M3, 2023, Four ports). Apple doesn’t publish for this Mac: USB-A ports, refresh rate, storage upgradeable by user, maximum continuous power, the macOS it shipped with. Pages checked: Apple Support (UK) — iMac (24-inch, 2023, Four ports) - Tech Specs; Apple Support (UK) — Identify your iMac model; Apple Newsroom (UK) — Apple supercharges 24-inch iMac with new M3 chip, read 9 Oct 2026.

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