iMac 21.5 (Late 2011) vs iMac 27 (Late 2009)

iMac 21.5 (Late 2011) $999
iMac 27 (Late 2009) $1,699
Base Price (MSRP)
$999
Base Price (MSRP)
$1,699
CPU
Core i3-2100
CPU
Core 2 Duo E7600
GPU
Radeon HD 6750M Mac MXM
GPU
Radeon HD 4670 Mac
Memory
2GB
Memory
4GB
Storage
250GB
Storage
1TB
Display
21.5" LCD IPS 1920×1080
Display
27" LCD IPS 2560×1440

GB6 Single-Core

  • 26% faster vs iMac 27 (Late 2009)
  • 20% slower vs iMac 21.5 (Late 2011)
iMac 21.5 (Late 2011) - GB6S 465
x1.26
iMac 27 (Late 2009) - GB6S 370
x1

GB6 Multi-Core

  • 52% faster vs iMac 27 (Late 2009)
  • 34% slower vs iMac 21.5 (Late 2011)
iMac 21.5 (Late 2011) - GB6M 940
x1.52
iMac 27 (Late 2009) - GB6M 620
x1

FP32

  • 32% faster vs iMac 27 (Late 2009)
  • 24% slower vs iMac 21.5 (Late 2011)
iMac 21.5 (Late 2011) - 574.08 GFLOPS FP32
x1.32
iMac 27 (Late 2009) - 435.2 GFLOPS FP32
x1
CPU Image
Core i3-2100
2 Cores
4 Threads
3.1GHz Clock
CPU Image
Core 2 Duo E7600
2 Cores
2 Threads
3.06GHz Clock
Core i3-2100 vs Core 2 Duo E7600 Full Specs Comparison
GPU Image
Radeon HD 6750M Mac MXM
480 Shaders
598MHz
256MB GDDR5
50.8GB/s Bandwidth
GPU Image
Radeon HD 4670 Mac
320 Shaders
680MHz
512MB GDDR3
25.3GB/s Bandwidth
574.08 GFLOPS FP32
1%
435.2 GFLOPS FP32
1%
Radeon HD 6750M Mac MXM vs Radeon HD 4670 Mac Full Specs Comparison
2GB
DDR3-1333
4GB
DDR3-1066
Unknown # Tabs
0%
8 Tabs
2%
250GB
3.5"
SATA 3
1TB
3.5"
SATA 2
430 min 4K Video
11%
1,930 min 4K Video
48%
8x SuperDrive DL
Slot Loading
8x SuperDrive DL
Slot Loading
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
375 Nits
Refresh Rate
60Hz
Refresh Rate
60Hz
Resolution
1920×1080
2.1 Million Pixels
102 PPI
Resolution
2560×1440
3.7 Million Pixels
109 PPI
1920×1080
2560×1440
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
1920×1080
2560×1440
480p
480p
Apple Wireless Keyboard
Apple Wireless Keyboard
Magic Mouse
Magic Mouse
No Biometrics
No Biometrics
2
2
1
1
No Cellular
No Cellular
Wi-Fi 4E (802.11n)
2 Stream
Up to 300Mbps
Wi-Fi 4E (802.11n)
2 Stream
Up to 300Mbps
No Bluetooth
Bluetooth 2.1
Z68
X48
ICH9
Data
4x USB 2.0 (480Mbps)
Data
4x USB 2.0 (480Mbps)
Network
1x Ethernet (1Gbps)
Network
1x Ethernet (1Gbps)
Video
1x mini-DisplayPort 1.1
Video
1x mini-DisplayPort 1.1
Audio
2x Audio Jack
Audio
2x Audio Jack
Card
1x SDXC Card
Card
1x SDHC Card
205W
365W
Mac OS X 10.7 Lion
Windows
Mac OS X 10.6 Snow Leopard
Windows
macOS 10.13 High Sierra (Latest)
Windows 7 (Latest)
macOS 10.13 High Sierra (Latest)
Windows 7 (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
518 mm (20.4 in)
Width
650 mm (25.6 in)
Depth
207 mm (8.1 in)
Volume
69.75 L
Weight
9.299 kg (20.5 lb)
Weight
13.835 kg (30.5 lb)
CPU
Upgradable
CPU
Upgradable
GPU
Not Upgradable
GPU
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
A1312
EMC 2309
iMac11,1
Change Comparison