Apple iMac (21.5-inch, Mid 2014) vs Apple iMac 24″ (M4)

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iMac (21.5-inch, Mid 2014) compared with iMac 24″ (M4)

	AppleiMac (21.5-inch, Mid 2014)	AppleiMac 24″ (M4)
Overview
Released
Released	June 2014	November 2024
Performance
Processor
Processor	Intel Core i5-4260U	Apple M4
CPU cores
CPU cores	2	8 or 10
CPU threads
CPU threads	4	–
Graphics
Graphics	Intel HD Graphics 5000	8-core GPU or 10-core GPU
AI engine (NPU)
AI engine (NPU)	–	38 TOPS
Memory
Memory	8 GB	16 GB, 24 GB or 32 GB (better)
Storage
Storage	256 GB to 1 TB	256 GB to 2 TB (better)
CPU
CPU	1.4 GHz dual-core Intel Core i5 with Turbo Boost up to 2.7 GHz and 3 MB shared L3 cache; Ars Technica identifies the exact processor as Core i5-4260U	8-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)
GPU
GPU	Integrated Intel HD Graphics 5000	Hardware-accelerated ray tracing
AI engine
AI engine	–	16-core Neural Engine
Memory bandwidth
Memory bandwidth	–	120GB/s
Memory type
Memory type	8 GB of 1600 MHz LPDDR3 onboard memory; no memory configuration or upgrade option	–
Storage type
Storage type	500 GB 5400-rpm hard drive; configurable to a 1 TB hard drive, 1 TB Fusion Drive or 256 GB PCIe-based flash storage	SSD
Media engine
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 size
Screen size	21.5″	24″
Resolution
Resolution	1920 × 1080	4480 × 2520 (better)
Panel
Panel	IPS LCD	IPS LCD
Refresh rate
Refresh rate	–	60 Hz
Brightness
Brightness	–	500 nits
Display type
Display type	LED-backlit display with IPS technology and support for millions of colours	4.5K Retina display; actual diagonal 23.5 inches
Pixel density
Pixel density	–	218 ppi
Display features
Display features	Fully laminated glass and anti-reflective coating; Target Display Mode via a separately sold Thunderbolt cable. Apple does not publish brightness or refresh rate in the model's specification sheet.	1 billion colours; wide colour (P3); True Tone; nano-texture glass option on four-port models
Connections
Ports
Ports	2 × Thunderbolt, 4 × USB-A, SD card slot, Ethernet, headphone jack	2 × Thunderbolt 4, headphone jack
Ethernet
Ethernet	1 Gb/s	–
External displays
External displays	Up to 1	Up to 1
Wi-Fi
Wi-Fi	802.11ac	Wi-Fi 6E
Bluetooth
Bluetooth	4.0	5.3
Camera
Camera	FaceTime HD	12MP Center Stage
Back ports
Back ports	Four USB 3 ports, two Thunderbolt ports with Mini DisplayPort output, SDXC card slot, Gigabit Ethernet, headphone and optical digital audio output; Kensington lock slot. DVI, VGA and dual-link DVI need separately sold adapters.	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 displays
External displays	Built-in display at native resolution alongside one external display up to 2560 × 1600; extended desktop and video mirroring	Two-port model: one at up to 6K 60Hz; four-port models: two at up to 6K 60Hz, or one at up to 8K 60Hz
Camera
Camera	–	12MP Center Stage camera with Desk View; 1080p HD video recording; advanced image signal processor with computational video
Speakers
Speakers	Stereo speakers; supports Apple iPhone headset with microphone	High-fidelity six-speaker system with force-cancelling woofers; wide stereo sound; Spatial Audio with Dolby Atmos
Microphones
Microphones	Dual microphones	Studio-quality three-mic array with high signal-to-noise ratio and directional beamforming
Keyboard and mouse
Keyboard and mouse	Apple Wireless Keyboard and Magic Mouse; optional Magic Trackpad	Magic 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
Type
Type	All-in-one	All-in-one
Weight
Weight	5.68 kg	4.42 kg (better)
Width × depth × height
Width × depth × height	528 × 175 × 450 mm	547 × 147 × 461 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Dimensions include the stand; weight varies by configuration and manufacturing process. A built-in VESA mount version was also available.	–
Power supply
Power supply	100–240 V AC, 50–60 Hz, single phase	143W external power adapter; power lead (2 m)
Noise
Noise	Apple's operator-position sound pressure is 11 dB at idle, during hard-drive seek and during its wireless-web test	–
Materials
Materials	Recyclable aluminium and glass enclosure; arsenic-free display glass and mercury-free LED backlight	100% recycled aluminium in the stand; more than 15% recycled content overall
Colours
Colours	–	Blue, Purple, Pink, Orange, Yellow, Green, Silver
In the box
In the box	iMac, Apple Wireless Keyboard, Magic Mouse and power lead; OS X Mavericks and the listed iLife apps were included	iMac, 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)