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Apple iMac 24″ (M1) vs Apple iMac 24″ (M4)

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

AppleiMac 24″ (M1)AppleiMac 24″ (M4)
Overview
ReleasedMay 2021November 2024
Performance
ProcessorApple M1Apple M4
CPU cores88 or 10
Graphics7-core GPU or 8-core GPU8-core GPU or 10-core GPU
AI engine (NPU)–38 TOPS
Memory8 GB or 16 GB16 GB, 24 GB or 32 GB
Storage256 GB to 2 TB256 GB to 2 TB
CPU8-core CPU with 4 performance cores and 4 efficiency cores8-core CPU with 4 performance cores and 4 efficiency cores (two-port model), or 10-core CPU with 4 performance cores and 6 efficiency cores (four-port models)
GPU7-core GPU in the two-port model; 8-core GPU in the four-port modelHardware-accelerated ray tracing
AI engine16-core Neural Engine16-core Neural Engine
Memory bandwidth–120GB/s
Storage typeSSD; two-port model configurable to 512 GB or 1 TB, four-port model to 512 GB, 1 TB or 2 TBSSD
Media engine–Hardware-accelerated H.264, HEVC, ProRes and ProRes RAW; video decode engine; video encode engine; ProRes encode and decode engine; AV1 decode
Display
Screen size24″24″
Resolution4480 × 25204480 × 2520
PanelIPS LCDIPS LCD
Refresh rate60 Hz60 Hz
Brightness500 nits500 nits
Display type4.5K Retina display; actual diagonal 23.5 inches; IPS panel and 60 Hz refresh rate confirmed by Notebookcheck4.5K Retina display; actual diagonal 23.5 inches
Pixel density218 ppi218 ppi
Display features1 billion colours; wide colour (P3); True Tone; anti-reflective coating1 billion colours; wide colour (P3); True Tone; nano-texture glass option on four-port models
Connections
Ports2 × USB4, headphone jack2 × Thunderbolt 4, headphone jack
External displaysUp to 1Up to 1
Wi-FiWi-Fi 6Wi-Fi 6E
Bluetooth5.05.3
Camera1080p FaceTime HD12MP Center Stage
Back portsTwo-port model: two Thunderbolt / USB 4 ports with DisplayPort, Thunderbolt 3 and USB 4 up to 40 Gb/s, and USB 3.1 Gen 2 up to 10 Gb/s; optional Gigabit Ethernet. Four-port model adds two USB 3 ports up to 10 Gb/s and includes Gigabit Ethernet. Both have a 3.5 mm headphone jack.2 × Thunderbolt / USB 4 (two-port model) or 4 × Thunderbolt 4 (four-port models), each with Thunderbolt 4 and USB 4 (up to 40Gb/s), USB 3.1 Gen 2 (up to 10Gb/s) and DisplayPort; Gigabit Ethernet on the power adapter, standard on four-port models and optional on the two-port model
External displaysOne external display up to 6K 60 Hz, alongside the built-in display at full resolutionTwo-port model: one at up to 6K 60Hz; four-port models: two at up to 6K 60Hz, or one at up to 8K 60Hz
Camera1080p FaceTime HD camera; advanced image signal processor with computational video12MP Center Stage camera with Desk View; 1080p HD video recording; advanced image signal processor with computational video
SpeakersHigh-fidelity six-speaker system with force-cancelling woofers; wide stereo sound; spatial audio with Dolby AtmosHigh-fidelity six-speaker system with force-cancelling woofers; wide stereo sound; Spatial Audio with Dolby Atmos
MicrophonesStudio-quality three-mic array with high signal-to-noise ratio and directional beamforming; Hey SiriStudio-quality three-mic array with high signal-to-noise ratio and directional beamforming
Keyboard and mouseMagic Mouse and Magic Keyboard; keyboard has Touch ID on the four-port model and optionally on the two-port model; Magic Trackpad and Magic Keyboard with Touch ID and Numeric Keypad available insteadMagic Keyboard (two-port model) or Magic Keyboard with Touch ID (four-port models), and Magic Mouse; Magic Trackpad or Magic Keyboard with Touch ID and Numeric Keypad available instead
Design and power
TypeAll-in-oneAll-in-one
Weight4.46 kg4.42 kg
Width × depth × height547 × 147 × 461 mm547 × 147 × 461 mm
Operating systemmacOSmacOS
Power supply143 W external power adapter with magnetic connection; Gigabit Ethernet built into the adapter where fitted143W external power adapter; power lead (2 m)
Noise7 dBA sound pressure at idle and during Apple's wireless web test (operator position)–
MaterialsRecyclable, low-carbon aluminium enclosure100% recycled aluminium in the stand; more than 15% recycled content overall
ColoursTwo-port model: Blue, Green, Pink, Silver. Four-port model also comes in Yellow, Orange and Purple.Blue, Purple, Pink, Orange, Yellow, Green, Silver
In the boxiMac, Magic Keyboard, Magic Mouse, 143 W power adapter, 2 m power lead, USB-C to Lightning cableiMac, Magic Keyboard (with Touch ID on four-port models), Magic Mouse, 143W power adapter, power lead (2 m), USB-C Charge Cable, polishing cloth (nano-texture glass only)

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