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 1920×1080
Display
27" LCD IPS 5120×2880

GB6 Single-Core

  • 59% slower vs iMac 27 (Late 2014)
  • 2.45x faster vs iMac 21.5 (Late 2011)
iMac 21.5 (Late 2011) - GB6S 465
x1
iMac 27 (Late 2014) - GB6S 1,140
x2.45

GB6 Multi-Core

  • 70% slower vs iMac 27 (Late 2014)
  • 3.37x faster vs iMac 21.5 (Late 2011)
iMac 21.5 (Late 2011) - GB6M 940
x1
iMac 27 (Late 2014) - GB6M 3,165
x3.37

FP32

  • 71% slower vs iMac 27 (Late 2014)
  • 3.48x faster vs iMac 21.5 (Late 2011)
iMac 21.5 (Late 2011) - 574.08 GFLOPS FP32
x1
iMac 27 (Late 2014) - 2 TFLOPS FP32
x3.48
CPU Image
Core i3-2100
2 Cores
4 Threads
3.1GHz Clock
CPU Image
Core i5-4590
4 Cores
4 Threads
3.3GHz Clock
Core i3-2100 vs Core i5-4590 Full Specs Comparison
GPU Image
Radeon HD 6750M Mac MXM
480 Shaders
598MHz
256MB GDDR5
50.8GB/s Bandwidth
GPU Image
Radeon R9 M290
1024 Shaders
975MHz
4GB GDDR5
174.7GB/s Bandwidth
574.08 GFLOPS FP32
1%
2 TFLOPS FP32
4%
Radeon HD 6750M Mac MXM vs Radeon R9 M290 Full Specs Comparison
2GB
DDR3-1333
8GB
DDR3-1600
Unknown # Tabs
0%
24 Tabs
5%
250GB
3.5"
SATA 3
-
128GB
Proprietary Apple 12+16 Pin
PCIe 2.0 x2
Up to 600MB/s
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
21.5"
27"
Area
197.5 in² (1274.3 cm²)
16:9 Aspect Ratio
Area
311.5 in² (2009.7 cm²)
16:9 Aspect Ratio
Brightness
300 Nits
Brightness
400 Nits
Refresh Rate
60Hz
Refresh Rate
60Hz
Resolution
1920×1080
2.1 Million Pixels
102 PPI
Resolution
5120×2880
14.7 Million Pixels
218 PPI
1920×1080
5120×2880
LED Backlight
1,000:1 Contrast
LED Backlight
1,000:1 Contrast
Viewing Angles
178° Horizontal
178° Vertical
Viewing Angles
178° Horizontal
178° Vertical
Colour Depth
8-bit
Colour Depth
8-bit
Coverage
100% sRGB
Coverage
100% sRGB
-
-
-
Coating
Glossy Anti-Reflective
Fully Laminated
1920×1080
5120×2880
480p
720p
Apple Wireless Keyboard
Apple Wireless Keyboard
Magic Mouse
Magic Mouse
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
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
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