iMac 24 (M4, Two Ports, Late 2024) vs iMac 21.5 (Late 2015)

iMac 24 (M4, Two Ports, Late 2024) $1,299
iMac 21.5 (Late 2015) $1,099
Base Price (MSRP)
$1,299
Base Price (MSRP)
$1,099
CPU
M4 (8C8G)
CPU
Core i5-5250U
GPU
8-Core M4
GPU
HD 6000 950MHz
Memory
16GB
Memory
8GB
Storage
256GB
Storage
128GB
Display
23.5" LCD IPS 4480x2520 -
Display
21.5" LCD IPS 1920x1080 -
M4 (8C8G)
8 Cores
8 Threads
4.4GHz Clock
Core i5-5250U
2 Cores
4 Threads
1.6GHz Clock
GB6S 3,765
93%
N/A
0%
GB6S 815
20%
GB6M 1,565
6%
8-Core M4
1024 Shaders
1470MHz
Shared Memory
HD 6000 950MHz
384 Shaders
950MHz
Shared Memory
N/A
0%
FP32 3.01 TFLOPS
6%
N/A
0%
FP32 0.73 TFLOPS
1%
16GB
LPDDR5X-7500
8GB
DDR3-1866
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 1.3GB/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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500 Nits
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350 Nits
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60Hz
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60Hz
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4480x2520
11.3 Million Pixels
219 PPI
1920x1080
2.1 Million Pixels
102 PPI
LED Backlight
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1,400:1 Contrast
LED Backlight
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1,000:1 Contrast
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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 4.0
No Sensors
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No Sensors
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Integrated Chipset
Z87
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 2 (20Gbps)
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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
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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
OS X 10.11 El Capitan
Windows
macOS 12 Monterey (Latest)
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 2889
iMac16,1
iMac16,2
Change Comparison