iMac 21.5 (Mid 2011) vs iMac 27 (Mid 2011) Full Specs
CPU | CPU |
GPU | GPU |
Memory | Memory |
Storage | Storage |
Display 21.5" LCD IPS1920x1080 300Nits 60Hz Glossy | Display 27" LCD IPS2560x1440 375Nits 60Hz Glossy |
Price $1,199 | Price $1,699 |
4 Cores 4 Threads 2.5GHz | 4 Cores 4 Threads 2.7GHz |
480 Shaders 598MHz | 480 Shaders 675MHz |
512MB GDDR5 | 512MB GDDR5 |
4x SO-DIMM | 4x SO-DIMM |
190MB/s Read 180MB/s Write | 190MB/s Read 180MB/s Write |
1x 3.5" | 1x 3.5" |
21.5" LCD IPS1920x1080 300Nits 60Hz Glossy | 27" LCD IPS2560x1440 375Nits 60Hz Glossy |
Panel & HDR LCD IPS | Panel & HDR LCD IPS |
Area & Aspect Ratio 197.5 in²
16:9 | Area & Aspect Ratio 311.5 in²
16:9 |
Brightness 300 nits
300 nits Peak | Brightness 375 nits
375 nits Peak |
Refresh & VRR 60Hz | Refresh & VRR 60Hz |
Resolution 1920x1080
2.1M Pixels
103 ppi | Resolution 2560x1440
3.7M Pixels
109 ppi |
Backlight & Contrast LED
1K:1 contrast | Backlight & Contrast LED
1K:1 contrast |
Viewing Angles 178° H
178° V | Viewing Angles 178° H
178° V |
Color Depth 8-bit | Color Depth 8-bit |
Color Coverage 100% sRGB | Color Coverage 100% sRGB |
Touchscreen No | Touchscreen No |
External Display Mode No | External Display Mode No |
Border Size 23 mm (0.91") | Border Size 23 mm (0.91") |
Data 1x Thunderbolt 1 4x USB 2.0 | Data 2x Thunderbolt 1 4x USB 2.0 |
Network 1x Ethernet | Network 1x Ethernet |
Audio 2x Audio Jack | Audio 2x Audio Jack |
Card Slots 1x SDXC Card | Card Slots 1x SDXC Card |
Wi-Fi 4E Bluetooth 2.1 | Wi-Fi 4E Bluetooth 2.1 |
Power Supply 205W | Power Supply 310W |
Speakers 2 | Speakers 2 |
Microphones 1 | Microphones 1 |
Launch OS Mac OS X 10.6 Snow Leopard | Launch OS Mac OS X 10.6 Snow Leopard |
Latest OS macOS 10.13 High Sierra | Latest OS macOS 10.13 High Sierra |
Secondary OS Windows 7 | Secondary OS Windows 7 |
Build Material Aluminum | Build Material Aluminum |
Height 451 mm (17.76")Width 528 mm (20.79")Depth 188 mm (7.4") | Height 518 mm (20.39")Width 650 mm (25.59")Depth 207 mm (8.15") |
Weight 9.30 kg | Weight 13.84 kg |
Volume 44.7681 L | Volume 69.6969 L |
Fans 3 | Fans 3 |
Release Date 2011-05-03 | Release Date 2011-05-03 |
Warranty 1 year | Warranty 1 year |
Description Mid 2011 | Description Mid 2011 |
Model ID iMac12,1 | Model ID iMac12,2 |
Model Number 1 A1311 | Model Number 1 A1312 |
Model Number 2 EMC 2428 | Model Number 2 EMC 2429 |