iMac 24 (M4, Two Ports, Late 2024) vs iMac 21.5 (Retina 4K, Mid 2017)

iMac 24 (M4, Two Ports, Late 2024) $1,299
iMac 21.5 (Retina 4K, Mid 2017) $1,299
Base Price (MSRP)
$1,299
Base Price (MSRP)
$1,299
CPU
M4 (8C8G)
CPU
Core i5-7400
GPU
8-Core M4
GPU
Radeon Pro 555
Memory
16GB
Memory
8GB
Storage
256GB
Storage
128GB
Display
23.5" LCD IPS 4480×2520
Display
21.5" LCD IPS 4096×2304
CPU Image
M4 (8C8G)
8 Cores
8 Threads
4.4GHz Clock
CPU Image
Core i5-7400
4 Cores
4 Threads
3GHz Clock
M4 (8C8G) vs Core i5-7400 Full Specs Comparison
GPU Image
8-Core M4
1024 Shaders
1470MHz
Shared Memory
GPU Image
Radeon Pro 555
768 Shaders
850MHz
2GB GDDR5
81.6GB/s Bandwidth
N/A
0%
3.01 TFLOPS FP32
6%
N/A
0%
1.31 TFLOPS FP32
3%
8-Core M4 vs Radeon Pro 555 Full Specs Comparison
16GB
LPDDR5X-7500
8GB
DDR4-2400
56 Tabs
11%
24 Tabs
5%
256GB
Soldered
PCIe 3.0 x4
Up to 1.4GB/s Read
128GB
Proprietary Apple 12+16 Pin
PCIe 3.0 x4
Up to 1.4GB/s Read
442 min 4K Video
11%
186 min 4K Video
5%
No Optical Drive
No Optical Drive
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23.5"
LCD IPS
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21.5"
LCD IPS
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Area
236 in² (1522.4 cm²)
16:9 Aspect Ratio
Area
197.5 in² (1274.3 cm²)
16:9 Aspect Ratio
Brightness
500 Nits
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Brightness
500 Nits
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Refresh Rate
60Hz
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Refresh Rate
60Hz
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Response Time
29ms GtG
Response Time
27ms GtG
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Flicker
23000Hz
Resolution
4480×2520
11.3 Million Pixels
219 PPI
Resolution
4096×2304
9.4 Million Pixels
219 PPI
LED Backlight
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1,400:1 Contrast
LED Backlight
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1,100:1 Contrast
Viewing Angles
178° Horizontal
178° Vertical
Viewing Angles
178° Horizontal
178° Vertical
Colour Depth
10-bit
Colour Depth
10-bit
Coverage
100% sRGB
99% DCI-P3
88% Adobe RGB
Coverage
100% sRGB
99% DCI-P3
88% Adobe RGB
Accuracy
dE 1.1 Avg
dE 2.0 Max
dE 1.50 Greyscale
2.16 Gamma
6730K
Accuracy
dE 1.4 Avg
dE 2.6 Max
dE 2.20 Greyscale
2.32 Gamma
6830K
Coating
Glossy Anti-Reflective
Fully Laminated
Coating
Glossy Anti-Reflective
Fully Laminated
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1080p
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720p
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Magic Keyboard
Magic Keyboard
Magic Mouse
Magic Mouse 2
Not Included
Not Included
Not Included
Not Included
No Biometrics
No Biometrics
6
2
3
2
No Cellular
No Cellular
Wi-Fi 6E (802.11ax)
2 Stream
Up to 2400Mbps
Wi-Fi 5 (802.11ac)
3 Stream
Up to 1300Mbps
Bluetooth 5.3
Bluetooth 4.2
No Sensors
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No Sensors
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Integrated Chipset
Z170
Data
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2x USB 4 (40Gbps)
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Data
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4x USB 3.0 (5Gbps)
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2x Thunderbolt 3 (40Gbps)
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Network
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1x Ethernet (1Gbps)
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Audio
1x Audio Jack
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Audio
1x Audio Jack
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Card
1x SDXC Card UHS-II
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External
185W
143W
15.90V
9.00A
Not Included
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MagSafe iMac
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2.0M (7 ft) Cable
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No Battery
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No Battery
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macOS 15 Sequoia
macOS 10.12 Sierra
Windows
Windows 10 (Latest)
Build Material
Aluminum
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Build Material
Aluminum
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Height
461 mm (18.1 in)
Width
547 mm (21.5 in)
Depth
147 mm (5.8 in)
Volume
37.07 L
Height
450 mm (17.7 in)
Width
528 mm (20.8 in)
Depth
175 mm (6.9 in)
Volume
41.63 L
Weight
4.42 kg (9.7 lb)
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Weight
5.67 kg (12.5 lb)
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CPU
Not Upgradable
CPU
Upgradable
GPU
Not Upgradable
GPU
Not Upgradable
Memory
Not Upgradable
Memory
Upgradable
Storage
Not Upgradable
Storage
Upgradable
Wi-Fi
Not Upgradable
Wi-Fi
Upgradable
Motherboard
Not Upgradable
Motherboard
Not Upgradable
Power Supply
Upgradable
Power Supply
Not Upgradable
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Storage Slots
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1x 2.5" Bay
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Memory Slots
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2x SO-DIMM
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A1418
EMC 3069
iMac18,2
Change Comparison