iMac 21.5 (Retina 4K, Mid 2017) vs iMac G5 20 (Late 2005)

iMac 21.5 (Retina 4K, Mid 2017) $1,299
iMac G5 20 (Late 2005) $1,699
Base Price (MSRP)
$1,299
Base Price (MSRP)
$1,699
CPU
Core i5-7400
CPU
PowerPC 970FX 2.1GHz
GPU
Radeon Pro 555
GPU
Radeon X600 XT
Memory
8GB
Memory
512MB
Storage
128GB
Storage
250GB
Display
21.5" LCD IPS 4096x2304 -
Display
20" LCD TN 1680x1050 -
Core i5-7400
4 Cores
4 Threads
3GHz Clock
PowerPC 970FX 2.1GHz
1 Core
1 Thread
2.1GHz Clock
GB6S 1,195
29%
GB6M 3,280
12%
N/A
0%
N/A
0%
Radeon Pro 555
768 Shaders
850MHz
2GB GDDR5
81.6GB/s Bandwidth
Radeon X600 XT
4 Shaders
500MHz
128MB DDR
11.8GB/s Bandwidth
N/A
0%
FP32 1.31 TFLOPS
3%
N/A
0%
N/A
0%
8GB
DDR4-2400
512MB
DDR-533
24 Tabs
5%
Unknown # Tabs
0%
128GB
Proprietary Apple 12+16 Pin
PCIe 3.0 x4
Up to 1.4GB/s Read
250GB
3.5"
SATA 1
7200RPM
186 min 4K Video
5%
430 min 4K Video
11%
No Optical Drive
8x SuperDrive DL
Slot Loading
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21.5"
LCD IPS
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20"
LCD TN
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500 Nits
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280 Nits
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60Hz
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60Hz
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4096x2304
9.4 Million Pixels
219 PPI
1680x1050
1.8 Million Pixels
99 PPI
LED Backlight
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1,100:1 Contrast
CCFL Backlight
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800:1 Contrast
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720p
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480p
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Magic Keyboard
Apple Keyboard
Magic Mouse 2
Mighty Mouse
Not Included
Apple Remote
Not Included
Not Included
No Biometrics
No Biometrics
2
2
2
1
No Cellular
No Cellular
Wi-Fi 5 (802.11ac)
3 Stream
Up to 1300Mbps
Wi-Fi 3 (802.11g)
1 Stream
Up to 54Mbps
Bluetooth 4.2
Bluetooth 2.0
Infrared
56K Modem
No Sensors
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No Sensors
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Z170
Integrated Chipset
Data
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4x USB 3.0 (5Gbps)
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2x Thunderbolt 3 (40Gbps)
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Data
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3x USB 2.0 (480Mbps)
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2x FireWire 400
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Network
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1x Ethernet (1Gbps)
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Network
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1x Ethernet (1Gbps)
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Video
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1x mini-VGA
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Audio
1x Audio Jack
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Audio
2x Audio Jack
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Card
1x SDXC Card UHS-II
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185W
180W
Not Included
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Not Included
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No Battery
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No Battery
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macOS 10.12 Sierra
Windows
Mac OS X 10.4 Tiger
Windows 10 (Latest)
Mac OS X 10.5 Leopard (Latest)
Build Material
Aluminum
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Build Material
Plastic
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Height
450 mm (17.7 in)
Width
528 mm (20.8 in)
Depth
175 mm (6.9 in)
Volume
41.63 L
Height
472 mm (18.6 in)
Width
493 mm (19.4 in)
Depth
188 mm (7.4 in)
Volume
43.76 L
Weight
5.67 kg (12.5 lb)
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Weight
9.979 kg (22 lb)
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CPU
Upgradable
CPU
Not Upgradable
GPU
Not Upgradable
GPU
Not Upgradable
Memory
Upgradable
Memory
Upgradable
Storage
Upgradable
Storage
Upgradable
Wi-Fi
Upgradable
Wi-Fi
Upgradable
Motherboard
Not Upgradable
Motherboard
Not Upgradable
Power Supply
Not Upgradable
Power Supply
Not Upgradable
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
A1145
EMC 2082
PowerMac12,1
Change Comparison