iMac 21.5 (Late 2011) vs iMac 27 (Late 2014)

iMac 21.5 (Late 2011) $999
iMac 27 (Late 2014) $1,999
Base Price (MSRP)
$999
Base Price (MSRP)
$1,999
CPU
Core i3-2100
CPU
Core i5-4590
GPU
Radeon HD 6750M Mac MXM
GPU
Radeon R9 M290
Memory
2GB
Memory
8GB
Storage
250GB
Storage
128GB
Display
21.5" LCD IPS 1920x1080 -
Display
27" LCD IPS 5120x2880 -
Core i3-2100
2 Cores
4 Threads
3.1GHz Clock
Core i5-4590
4 Cores
4 Threads
3.3GHz Clock
Radeon HD 6750M Mac MXM
480 Shaders
598MHz
256MB GDDR5
50.8GB/s Bandwidth
Radeon R9 M290
1024 Shaders
975MHz
4GB GDDR5
174.7GB/s Bandwidth
N/A
0%
FP32 0.57 TFLOPS
1%
N/A
0%
FP32 2 TFLOPS
4%
2GB
DDR3-1333
8GB
DDR3-1600
Unknown # Tabs
0%
24 Tabs
5%
250GB
3.5"
SATA 3
7200RPM
128GB
Proprietary Apple 12+16 Pin
PCIe 2.0 x2
Up to 600MB/s Read
430 min 4K Video
11%
186 min 4K Video
5%
8x SuperDrive DL
Slot Loading
No Optical Drive
-
-
21.5"
LCD IPS
-
27"
LCD IPS
-
300 Nits
-
400 Nits
-
60Hz
-
60Hz
-
1920x1080
2.1 Million Pixels
102 PPI
5120x2880
14.7 Million Pixels
218 PPI
LED Backlight
-
1,000:1 Contrast
LED Backlight
-
1,000:1 Contrast
-
-
-
-
480p
-
-
-
-
-
-
-
720p
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Apple Wireless Keyboard
Apple Wireless Keyboard
Magic Mouse
Magic Mouse
Not Included
Not Included
Not Included
Not Included
No Biometrics
No Biometrics
2
2
1
2
No Cellular
No Cellular
Wi-Fi 4E (802.11n)
2 Stream
Up to 300Mbps
Wi-Fi 5 (802.11ac)
3 Stream
Up to 1300Mbps
No Bluetooth
Bluetooth 4.0
No Sensors
-
-
-
-
No Sensors
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Z68
Z87
Data
-
-
-
-
-
-
-
-
-
-
-
4x USB 2.0 (480Mbps)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Data
-
-
-
-
-
-
-
-
-
-
-
-
4x USB 3.0 (5Gbps)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2x Thunderbolt 2 (20Gbps)
-
-
-
Network
-
-
1x Ethernet (1Gbps)
-
-
-
Network
-
-
1x Ethernet (1Gbps)
-
-
-
Video
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1x mini-DisplayPort 1.1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Audio
2x Audio Jack
-
Audio
1x Audio Jack
-
Card
1x SDXC Card
-
Card
1x SDXC Card
-
-
-
-
-
-
-
-
-
-
-
-
-
205W
310W
Not Included
-
-
Not Included
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
No Battery
-
-
-
-
No Battery
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Mac OS X 10.7 Lion
Windows
OS X 10.10 Yosemite
Windows
macOS 10.13 High Sierra (Latest)
Windows 7 (Latest)
macOS 11 Big Sur (Latest)
Windows 10 (Latest)
Build Material
Aluminum
-
-
Build Material
Aluminum
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Height
451 mm (17.8 in)
Width
528 mm (20.8 in)
Depth
188 mm (7.4 in)
Volume
44.89 L
Height
516 mm (20.3 in)
Width
650 mm (25.6 in)
Depth
203 mm (8 in)
Volume
68.13 L
Weight
9.299 kg (20.5 lb)
-
-
-
-
Weight
9.525 kg (21 lb)
-
-
-
-
CPU
Upgradable
CPU
Upgradable
GPU
Not Upgradable
GPU
Not Upgradable
Memory
Upgradable
Memory
Upgradable
Storage
Upgradable
Storage
Upgradable
Wi-Fi
Upgradable
Wi-Fi
Not Upgradable
Motherboard
Not Upgradable
Motherboard
Not Upgradable
Power Supply
Not Upgradable
Power Supply
Not Upgradable
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Memory Slots
-
4x SO-DIMM
Memory Slots
-
4x SO-DIMM
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
A1311
EMC 2496
iMac12,1
A1419
EMC 2806
iMac15,1
Change Comparison