iMac 27 (Late 2012) vs iMac 21.5 (Retina 4K, Late 2015)

iMac 27 (Late 2012) $1,799
iMac 21.5 (Retina 4K, Late 2015) $1,499
Base Price (MSRP)
$1,799
Base Price (MSRP)
$1,499
CPU
Core i5-3470S
CPU
Core i5-5675R
GPU
GeForce GTX 660M Mac
GPU
Iris Pro 6200 1100MHz
Memory
8GB
Memory
8GB
Storage
128GB
Storage
128GB
Display
27" LCD IPS 2560×1440
Display
21.5" LCD IPS 4096×2304

GB6 Single-Core

  • 51% slower vs iMac 21.5 (Retina 4K, Late 2015)
  • 2.06x faster vs iMac 27 (Late 2012)
iMac 27 (Late 2012) - GB6S 600
x1
iMac 21.5 (Retina 4K, Late 2015) - GB6S 1,235
x2.06

GB6 Multi-Core

  • 54% slower vs iMac 21.5 (Retina 4K, Late 2015)
  • 2.17x faster vs iMac 27 (Late 2012)
iMac 27 (Late 2012) - GB6M 1,725
x1
iMac 21.5 (Retina 4K, Late 2015) - GB6M 3,745
x2.17

FP32

  • 14% slower vs iMac 21.5 (Retina 4K, Late 2015)
  • 16% faster vs iMac 27 (Late 2012)
iMac 27 (Late 2012) - 730 GFLOPS FP32
x1
iMac 21.5 (Retina 4K, Late 2015) - 845 GFLOPS FP32
x1.16
CPU Image
Core i5-3470S
4 Cores
4 Threads
2.9GHz Clock
CPU Image
Core i5-5675R
4 Cores
4 Threads
3.1GHz Clock
Core i5-3470S vs Core i5-5675R Full Specs Comparison
GPU Image
GeForce GTX 660M Mac
384 Shaders
950MHz
512MB GDDR5
80GB/s Bandwidth
GPU Image
Iris Pro 6200 1100MHz
384 Shaders
1100MHz
Shared Memory
730 GFLOPS FP32
1%
845 GFLOPS FP32
2%
GeForce GTX 660M Mac vs Iris Pro 6200 1100MHz Full Specs Comparison
8GB
DDR3-1600
8GB
DDR3-1866
24 Tabs
5%
24 Tabs
5%
128GB
Proprietary Apple 7+17 Pin
SATA 3
Up to 520MB/s
128GB
Proprietary Apple 12+16 Pin
PCIe 3.0 x4
Up to 1.3GB/s
186 min 4K Video
5%
186 min 4K Video
5%
27"
LCD IPS
21.5"
LCD IPS
27"
21.5"
Area
311.5 in² (2009.7 cm²)
16:9 Aspect Ratio
Area
197.5 in² (1274.3 cm²)
16:9 Aspect Ratio
Brightness
400 Nits
Brightness
400 Nits
Refresh Rate
60Hz
Refresh Rate
60Hz
-
-
Response Time
27ms GtG
-
-
Flicker
23000Hz
Resolution
2560×1440
3.7 Million Pixels
109 PPI
Resolution
4096×2304
9.4 Million Pixels
219 PPI
2560×1440
4096×2304
LED Backlight
1,000:1 Contrast
LED Backlight
1,100:1 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
99% DCI-P3
88% Adobe RGB
Coating
Glossy Anti-Reflective
Fully Laminated
Coating
Glossy Anti-Reflective
Fully Laminated
2560×1440
4096×2304
720p
720p
Apple Wireless Keyboard
Magic Keyboard
Magic Mouse
Magic Mouse 2
No Biometrics
No Biometrics
2
2
2
2
No Cellular
No Cellular
Wi-Fi 4E (802.11n)
3 Stream
Up to 450Mbps
Wi-Fi 5 (802.11ac)
3 Stream
Up to 1300Mbps
Bluetooth 4.0
Bluetooth 4.0
Z77
Z87
Data
4x USB 3.0 (5Gbps)
2x Thunderbolt 1 (10Gbps)
-
Data
4x USB 3.0 (5Gbps)
-
2x Thunderbolt 2 (20Gbps)
Network
1x Ethernet (1Gbps)
Network
1x Ethernet (1Gbps)
Audio
1x Audio Jack
Audio
1x Audio Jack
Card
1x SDXC Card
Card
1x SDXC Card
310W
185W
OS X 10.8 Mountain Lion
Windows
OS X 10.11 El Capitan
Windows
macOS 10.15 Catalina (Latest)
Windows 10 (Latest)
macOS 12 Monterey (Latest)
Windows 10 (Latest)
Build Material
Aluminum
Build Material
Aluminum
Height
516 mm (20.3 in)
Width
650 mm (25.6 in)
Depth
203 mm (8 in)
Volume
68.13 L
Height
450 mm (17.7 in)
Width
528 mm (20.8 in)
Depth
175 mm (6.9 in)
Volume
41.63 L
Weight
9.525 kg (21 lb)
Weight
5.67 kg (12.5 lb)
CPU
Upgradable
CPU
Upgradable
GPU
Not Upgradable
GPU
Not Upgradable
Memory
Upgradable
Memory
Upgradable
Storage
Upgradable
Storage
Upgradable
Wi-Fi
Not Upgradable
Wi-Fi
Upgradable
Motherboard
Not Upgradable
Motherboard
Not Upgradable
Power Supply
Not Upgradable
Power Supply
Not Upgradable
-
-
Storage Slots
1x 2.5" Bay
Memory Slots
4x SO-DIMM
Memory Slots
2x SO-DIMM
A1419
EMC 2546
iMac13,2
A1418
EMC 2833
iMac16,2
Change Comparison