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iMac (21.5-inch, Mid 2011)

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Specification

Overview

Introduced:
03/05/2011
Discontinued:
23/10/2012
Model Number:
A1311
EMC:
2428
Support Status:
Obsolete
Colours:
Silver
Weight:
9.3kg
Height:
45.1cm
Width:
52.8cm
Depth:
18.85cm
iMac12,1
Specification:
All Specifications

Display

Display Size:
21.5-inch
Display Type:
LED-backlit glossy widescreen TFT LCD
Native Resolution:
1920 by 1080 pixels
External Resolution:
Up to 2560 by 1600 pixels
Display Modes:
Dual display extended, video mirroring, AirPlay Mirroring, and Target Display
Display Support:
Thunderbolt digital video output (Support for up to two Thunderbolt displays)

Connections

WiFi:
Built-in AirPort Extreme card (802.11a/b/g/n)
Bluetooth:
Built-in Bluetooth 2.1 + EDR
Ethernet:
10/100/1000BASE-T (RJ-45)
USB:
4 - 480 MBit/s
Thunderbolt:
1 - Thunderbolt 1 (up to 10 Gbps)
FireWire:
1 - 800 MBit/s
SD Card Slot:
1 - Secure Digital (SDXC)
Audio Jack:
1 - 3.5-mm analog/optical combo jack
Microphone:
Built-in microphone
Speakers:
2 - internal 17-watt amplifiers, Built-in speakers
Infrared:
1 - For Apple Remote only

Software

Original OS:
Mac OS X 10.6.6 (10J4026)
Maximum OS:
macOS 10.13.6 (17G65)
AirDrop:
Supported
Firmware:
Intel Extensible Firmware Interface (EFI)
Bootcamp Windows Support:
Windows 7 to 8.1

Camera

FaceTime HD
Resolution:
720p

Processor

User Upgradeable:
No
Architecture:
64-bit
Generation:
Sandy Bridge
System Bus:
Intel Direct Media Interface (DMI) at 2.5 GT/s
2400S
Range:
i5
Clock Speed:
2.5GHz
Cores:
4
Geekbench 5 Single Core:
638
Geekbench 5 Multi Core:
1825
2500S
Range:
i5
Clock Speed:
2.7GHz
Cores:
4
Geekbench 5 Single Core:
697
Geekbench 5 Multi Core:
1916
2600S
Range:
i7
Clock Speed:
2.8GHz
Cores:
4
Geekbench 5 Single Core:
737
Geekbench 5 Multi Core:
2404

Graphics

User Upgradeable:
No
AMD Radeon HD 6750M
Type:
Dedicated
Memory (VRAM):
0.512GB
Memory Type:
GDDR5
AMD Radeon HD 6770M
Type:
Dedicated
Memory (VRAM):
0.512GB
Memory Type:
GDDR5

Memory

User Upgradeable:
No
Maximum Memory:
32 GB (Actual) 16 GB (Apple)
Type:
SO-DIMM
Pins:
204
DDR:
DDR3
Speed:
1333MHz
Version:
PC3-10600
Memory Slots:
4
Interleaving Support:
Yes

Storage

User Upgradeable:
No
Sizes:
500 GB, 1, or 2 TB (7200-rpm SATA) and/or 256 GB (SSD)

Power

Built-in Battery:
3 V CR2032 lithium
Maximum Continuous Power:
205 W
Line Voltage:
100-240V AC
Power Consumption:
81 W (2.5 GHz Idle) 106 W (2.5 GHz CPU Max) 85 W (2.7 GHz Idle) 114 W (2.7 GHz CPU Max)

Environmental

Acoustical Performance:
18 dBA at idle
Energy STAR:
Meets ENERGY STAR 5.2 requirements
EPEAT:
Gold

Original Price

MC309LL/A
Specification:
2.5 GHz
GBP:
£999
USD:
$1199
EUR:
€1149
MC812LL/A
Specification:
2.7 GHz
GBP:
£1249
USD:
$1499
EUR:
€1449

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