Apple iMac "Core i5" 3.1 27" (Mid-2011) Specs

Identifiers: Mid-2011 - MC814LL/A - iMac12,2 - A1312 - 2429

All iMac Models | All 2011 Models | Dynamically Compare This Mac to Others

The iMac "Core i5" 3.1 27-Inch Aluminum (Mid-2011) is powered by a Quad Core 3.1 GHz Intel "Core i5" I5-2400 (Sandy Bridge) processor with a dedicated 256k level 2 cache for each core and a 6 MB shared level 3 cache. In lieu of a system bus, it has a "Direct Media Interface" (DMI) that "connects between the processor and chipset" at 5 GT/s.

By default, it is configured with 4 GB of RAM (1333 MHz PC3-10600 DDR3 SDRAM), a 1 TB (7200 RPM) hard drive, a vertically-mounted slot-loading DVD±R DL "SuperDrive", and AMD Radeon HD 6970M graphics with 1 GB of dedicated GDDR5 memory.

It also has a built-in "FaceTime HD" video camera and built-in stereo speakers underneath the 27" glossy 16:9 LED-backlit TFT Active Matrix LCD (2560x1440 native) display "with IPS technology".

Connectivity includes four USB 2.0 ports, a Firewire "800" port, built-in AirPort Extreme, Gigabit Ethernet, and an SDXC card slot as well as dual "Thunderbolt" ports that are backwards compatible with Mini DisplayPort and, likewise, each support an external display up to 30" (2560x1600). Thunderbolt also supports other peripherals that use the Thunderbolt standard which provides up to 10 Gbps of bandwidth in both directions.

Externally, the "Mid-2011" iMac line uses the same "edge-to-edge" glass design and "seamless all aluminum enclosure" as the "Mid-2010" models that came before them. Internally, however, the "Mid-2011" line is equipped with faster processors and faster graphics processors, as well as the aforementioned external improvements of a higher resolution (and wider angle) webcam and Thunderbolt.

The "Mid-2011" iMac models included a compact aluminum Apple Wireless Keyboard and the choice of either a multi-touch "Magic Mouse" or a multi-touch "Magic Trackpad" that "enables users to scroll smoothly up and down a page with inertial scrolling, pinch to zoom in and out, rotate an image with their fingertips and swipe three fingers to flip through a collection of web pages or photos" just like on Apple notebooks from the same era. An aluminum remote was offered for an additional US$19, too.

Also see:

• What are the differences between the "Mid-2011" Aluminum iMac models?
• How do the "Mid-2011" Aluminum iMac models compare to the "Mid-2010" models that preceded them?

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• Tech Specs
• Ports
• Global Original Prices
• Popular Q&As

Tech Specs

Click on a category for related details. The most commonly needed info is "open" by default, but all info is important. Asterisks (*) reference data in details fields.

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Introduction Date:

May 3, 2011

Discontinued Date:

October 23, 2012

Details:

The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" refers to the date a model either was replaced by a subsequent system or production otherwise ended. Also see: All Macs introduced in 2011.

Processors:

1 (4 Cores)

Architecture:

64-Bit

Details:

Also see: All models with a 64-Bit processor courtesy of EveryMac.com's Ultimate Mac Sort.

Geekbench 2 (32):

8357

Geekbench 2 (64):

8878

Details:

Geekbench 2 benchmarks are in 32-bit and 64-bit modes, respectively. These numbers reflect an average of user provided 32-bit and 64-bit results as submitted to the Geekbench website. Higher numbers are better. You also might be interested in reviewing all 32-bit and 64-bit Geekbench 2 user submissions for Macs with the iMac12,2 Model Identifier, which may include multiple models. To dynamically compare Geekbench 2 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison.

Geekbench 3 (32):

2589

Geekbench 3 (32):

8005

Details:

These Geekbench 3 benchmarks are in 32-bit mode and are for a single processor core and all processor cores, respectively. Both numbers reflect an average of user provided results as submitted to the Geekbench website. Higher numbers are better. You also might be interested in reviewing all 32-bit single core and multicore Geekbench 3 user submissions for Macs with the iMac12,2 Model Identifier, which may include multiple models. To dynamically compare 32-bit Geekbench 3 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison.

Geekbench 3 (64):

2784

Geekbench 3 (64):

8658

Details:

These Geekbench 3 benchmarks are in 64-bit mode and are for a single processor core and all processor cores, respectively. Both numbers reflect an average of user provided results as submitted to the Geekbench website. Higher numbers are better. You also might be interested in reviewing all 64-bit single core and multicore Geekbench 3 user submissions for Macs with the iMac12,2 Model Identifier, which may include multiple models. To dynamically compare 64-bit Geekbench 3 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison.

Geekbench 4 (SC):

3226

Geekbench 4 (MC):

9072

Details:

These Geekbench 4 benchmarks are are for a single processor core and all processor cores, respectively. All Geekbench 4 benchmarks are 64-bit. Both numbers reflect an average of user provided results as submitted to the Geekbench website. Higher numbers are better. You also might be interested in reviewing all single core and multicore Geekbench 4 user submissions for Macs with the iMac12,2 Model Identifier, which may include multiple models. To dynamically compare Geekbench 4 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison.

Geekbench 5 (SC):

669

Geekbench 5 (MC):

2152

Details:

These Geekbench 5 benchmarks are are for a single processor core and all processor cores, respectively. All Geekbench 5 benchmarks for the Mac are 64-bit. Both numbers reflect an average of user provided results as submitted to the Geekbench website. Higher numbers are better. You also might be interested in reviewing all single core and multicore Geekbench 5 user submissions for Macs with the iMac12,2 Model Identifier, which may include multiple models. To dynamically compare Geekbench 5 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison.

Processor Speed:

3.1 GHz

Processor Type:

Core i5 (I5-2400)

Details:

This model is powered by a 32 nm, 64-bit Intel Core i5 "Sandy Bridge" processor with quad cores (four independent processor cores on a single silicon chip, each with one thread). Each core has a dedicated 256k level 2 cache and all processor cores share a single 6 MB level 3 cache. It also supports Turbo Boost 2.0 (up to 3.4 GHz) -- which "automatically boosts the processor speed based on workload" (so if an application is only using one of the four cores it will automatically increase the speed of the core in use and turn off the unused cores). Also see: How much faster are the "Mid-2011" Aluminum iMac models than the "Mid-2010" models?

Turbo Boost:

3.4 GHz

Custom Speeds:

3.4 GHz (Core i7)

Details:

This model additionally could be configured with a 3.4 GHz Quad Core "Core i7" processor (I7-2600) for an extra US$200. This "Core i7" processor supports Hyper-Threading (it has two threads per core for a total of eight threads for the system) as well as Turbo Boost 2.0 (the system can dynamically increase the processor clockspeed to 3.8 GHz when tasks demand). It has a larger 8 MB level 3 cache, too. As requested by readers, EveryMac.com also has documented this custom configuration as its own model.

Processor Upgrade:

LGA 1155 (Socket H2)*

FPU:

Integrated

Details:

*Officially, Apple provides no information about whether or not the processor in this model can be upgraded and the company does not intend for one to upgrade the processor either. However, this processor supports an LGA 1155 (H2) socket and it is possible to upgrade the processor to some extent. Also see: Is it possible to upgrade the processor in the Aluminum iMac models?

System Bus Speed:

5 GT/s*

Cache Bus Speed:

3.1 GHz (Built-in)

Details:

*This system has a "Direct Media Interface" (DMI) that "connects between the processor and chipset" in lieu of a traditional system bus. Intel reports that it runs at 5 GT/s.

ROM/Firmware Type:

EFI

EFI Architecture:

64-Bit

Details:

N/A

L1 Cache:

32k/32k

L2/L3 Cache:

256k (x 4), 6 MB

Details:

Each core has its own dedicated 256k level 2 cache and the system has 6 MB of shared level 3 cache.

RAM Type:

PC3-10600 DDR3

Min. RAM Speed:

1333 MHz

Details:

Supports 1333 MHz PC3-10600 DDR3 SO-DIMMs (204-pin). Also see: How do you upgrade the RAM in this Aluminum iMac model? How much RAM does it actually support?

Standard RAM:

4 GB

Maximum RAM:

32 GB*

Details:

By default, 4 GB of RAM is installed as two 2 GB SO-DIMM modules. Two slots free. *Officially, this model supports four 4 GB modules -- one in each slot for a maximum of 16 GB of memory. However, third-parties have discovered that it actually will support 32 GB of memory using four 8 GB modules. In the US (and many other countries), site sponsor Other World Computing sells memory -- as well as other upgrades -- for this iMac. In the UK, site sponsor Flexx sells memory and other upgrades for this iMac. In Germany, site sponsor CompuRAM sells memory and other upgrades for this iMac. In Australia, site sponsor Upgradeable sells memory and other upgrades for this iMac. Also see: Actual Max RAM of All G3 & Later Macs.

Motherboard RAM:

None

RAM Slots:

4

Details:

N/A

Video Card:

Radeon HD 6970M

VRAM Type:

GDDR5

Details:

By default, this model has an AMD Radeon HD 6970M graphics processor with 1 GB of dedicated GDDR5 memory. By custom configuration, the same graphics processor can be equipped with 2 GB of dedicated GDDR5 memory for an extra US$100. Also see: What type of video processor is provided by the Aluminum iMac systems? Is it upgradable?

Standard VRAM:

1 GB

Maximum VRAM:

2 GB*

Details:

*By default, this model has 1 GB of dedicated GDDR5 video memory. At the time of purchase, it can be upgraded to 2 GB of dedicated GDDR5 video memory for an additional US$100.

Built-in Display:

27" 16:9 Widescreen

Native Resolution:

2560x1440

Details:

This model has a 27" glossy LED-backlit 16:9 widescreen TFT active matrix display with "IPS technology" and a native resolution of 2560x1440. Apple also reports a viewing angle of 178 degrees horizontal and 178 degrees vertical. The contrast ratio is 1000:1. In the UK, site sponsor ALB Repair offers component-level logic board repair, display repair, and other repair services for this iMac. No fix, no fee! In Spain, site sponsor iRepairs provides affordable repair and data recovery services. In-person and by mail repair services include the display, graphics card, motherboard, power supply, and more for this iMac. In Hong Kong, site sponsor iCertified provides well-reviewed repair services for the display, logic board, water damage, and more, all with a 180-day warranty; free diagnostics and estimates; and optional pickup and delivery for this iMac.

2nd Display Support:

Dual/Mirroring (x2)

2nd Max. Resolution:

2560x1600

Details:

Apple reports that this model simultaneously supports the native resolution of the built-in display and up-to two 30-inch external displays (2560x1600) by using both Thunderbolt ports.

Standard Storage:

1 TB HDD

Std. Storage Speed:

7200 RPM

Details:

Also see: How do you upgrade the hard drive in the "Late 2009," "Mid-2010" and "Mid-2011" Aluminum iMac models? What type of storage do they support? Is it even possible to upgrade these models? In the US (and many other countries), site sponsor Other World Computing sells storage upgrades for this iMac. In the UK, site sponsor Flexx sells storage upgrades for this iMac. In Australia, site sponsor Upgradeable sells storage upgrades for this iMac. Also see: SSD Compatibility Guide for All G3 & Later Macs.

Storage Dimensions:

3.5" (26.10 mm)/2.5" (7 mm)

Storage Interface:

Serial ATA (6 Gb/s*)

Details:

*As shipped, these models only supported the 3 Gb/s SATA II standard for both a 3.5" hard drive and a 2.5" SSD. However, as first discovered by site sponsor OWC, the iMac EFI Update 1.6, released two days later, quietly provided 6 Gb/s SATA III support.

Standard Optical:

8X DL "SuperDrive"

Standard Disk:

None

Details:

Apple reports that the slot-loading 8X "SuperDrive" with 4X double-layer burning (DVD+R DL/DVD±RW/CD-RW) "writes DVD+R DL discs at up to 4x speed, writes DVD-R and DVD+R discs at up to 8x speed, writes DVD-RW at up to 6x and DVD+RW discs at up to 8x speed, reads DVDs at up to 8x speed, writes CD-R discs at up to 24x speed, writes CD-RW discs at up to 16x speed, [and] reads CDs at up to 24x speed."

Standard Modem:

None

Standard Ethernet:

10/100/1000Base-T

Details:

N/A

Standard AirPort:

802.11a/b/g/n (450 Mbit*)

Standard Bluetooth:

2.1+EDR

Details:

AirPort Extreme (802.11a/b/g/n) and Bluetooth 2.1+EDR standard. Although Apple formally makes no mention of it, as discovered by users, this model unofficially supports 450 Mbit/sec 802.11n Wi-Fi using MIMO.

USB Ports:

4 (2.0)

Firewire Ports:

1 (800)

Details:

Four USB 2.0 ports and one Firewire "800" port (7 watts).

Expansion Slots:

SDXC SD Card

Expansion Bays:

None*

Details:

*This iMac has an extra 6 Gb/s Serial ATA connector and power for the optional SSD, but if one is not installed at the time the system is purchased the connector cables and mounting bracket are not present. Nevertheless, it is possible to install a 2.5" SSD in addition to the hard drive if an SSD is not installed initially it's just a bit of a "hack." In the US (and many other countries), site sponsor Other World Computing sells a wide variety of external expansion options and hand-picked accessories like external storage, stands, keyboards, cables, adapters, speakers, and more for this iMac.

Incl. Keyboard:

Apple Wireless Keyboard

Incl. Input:

Magic Mouse/Trackpad

Details:

This model shipped with a small aluminum "ultrathin, compact wireless keyboard" (no numeric keypad) and a choice, at no extra charge, of either the wireless "Magic Mouse", where the "entire top is a seamless multi-touch surface" that allows one to "navigate using intuitive finger gestures" or a wireless "Magic Trackpad" that provides multi-touch input like on a recent Apple notebook. Also see: How does the "ultra thin" keyboard provided with the "Aluminum" iMac models compare to a more traditional desktop keyboard? How does it feel?

Case Type:

All-in-One

Form Factor:

iMac (Late 2009)

Details:

The external case used by the "Mid-2011" iMac models essentially is identical to the one first introduced by the "Late 2009" line with "edge-to-edge glass" for the display and a "seamless all aluminum enclosure."

Apple Order No:

MC814LL/A

Apple Subfamily:

Mid-2011

Details:

The Apple order number should be unique to this system.

Apple Model No:

A1312 (EMC 2429)

Model ID:

iMac12,2

Details:

Please note that these identifiers refer to more than one model. Also see: All Macs with the A1312 Model Number, the 2429 EMC Number, and the iMac12,2 Model Identifier. For more about these identifiers and how to locate them on each Mac, please refer to EveryMac.com's Mac Identification section.

Battery Type:

N/A

Battery Life:

N/A

Details:

N/A

Pre-Installed MacOS:

X 10.6.6 (10J4026)

Maximum MacOS:

X 10.13.x*

Details:

*This system fully supports the last version of OS X 10.8 "Mountain Lion", OS X 10.9 "Mavericks", and OS X 10.10 "Yosemite" except for Power Nap functionality. It also supports the last version of OS X 10.11 "El Capitan" -- including Mac-to-Mac AirDrop and AirPlay Mirroring capability -- but no other advanced features are supported including Metal graphics acceleration. It is capable of running macOS Sierra (10.12) as well, although it does not support the Universal Clipboard, Auto Unlock, or Apple Pay features. Finally, this model is capable of running macOS High Sierra (10.13), and it supports HEVC (High-Efficiency Video Coding), but it does not support hardware accelerated HEVC. It is not compatible with macOS Mojave (10.14) or later versions of the operating system. Additionally, please note that OS X "Lion" 10.7 and subsequent versions of OS X are not capable of running Mac OS X apps originally written for the PowerPC processor as these operating systems do not support the "Rosetta" environment. To run PowerPC applications on this Mac, it will be necessary to use Mac OS X 10.6 "Snow Leopard". Also see: Which Macs are compatible with macOS High Sierra (10.13)? What are the system requirements? Which Macs support HEVC?

Minimum Windows:

7 (32-Bit)*

Maximum Windows:

8.1 (64-Bit)*

Details:

*Apple's Boot Camp 4 supports the 32-bit version of Windows 7 on this model and Boot Camp 5 supports the 64-bit versions of Windows 7 and Windows 8. Earlier versions of Windows are not supported. Although Apple does not support Windows 10 via Boot Camp 5 (officially or otherwise), this system meets Microsoft's hardware requirements and it very well may be possible to boot Windows 10 on this Mac. If you have installed Windows 10 on this system (successfully or unsuccessfully), please share the results of your experiment. Thank you.

MacOS 9 Support:

None

Windows Support:

Boot/Virtualization

Details:

Also see: Are there any third-party programs to run Mac OS 9/Classic applications on Intel Macs? For more on running Windows on Intel Macs, please refer to the exhaustive Windows on Mac Q&A.

Dimensions:

20.4 x 25.6 x 8.15

Avg. Weight:

30.5 lbs. (13.8 kg)

Details:

In inches - height by width by depth, (51.7 cm, 65.0 cm, 20.7 cm).

Original Price (US):

US$1999

Est. Current Retail:

US$150-US$250

Details:

Photo Credit: Apple, Inc.

Ports

Click on a category for additional details. The most commonly needed info is "open" by default, but all info is important. The icons correspond with the icons for each port on the computer.

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Video (Monitor):

2 (Thunderbolt)

Floppy (Ext.):

None

Details:

This model is equipped with two Thunderbolt ports rather than a Mini DisplayPort. Thunderbolt is backwards-compatible with Mini DisplayPort-equipped displays as well as adapters that are compatible with Mini DisplayPort (DVI, VGA, dual-link DVI and HDMI). It also can support other peripherals that use the Thunderbolt standard, which provides a maximum theoretical 10 Gbps of bandwidth in both directions.

ADB:

None

SCSI:

None

Details:

N/A

Serial (Standard):

None

Serial (Geoport):

None

Details:

N/A

USB:

4 (2.0)

Firewire:

1 (800)

Details:

Four USB 2.0 ports and one Firewire "800" port (7 watts).

Modem:

None

Ethernet:

1 (RJ-45)

Details:

No internal modem. Gigabit Ethernet, AirPort Extreme (802.11g/n) and Bluetooth 2.1+EDR standard.

S-Video Input:

None

S-Video Output:

None

Details:

N/A

Microphone:

1 (Built-in)

Sound In:

1

Details:

Single "audio line in" port.

Sound Out:

1

Headphone:

1

Details:

Single "audio line out" port also can be used for headphones.

Security (Lock):

1

Joystick (PC):

None

Details:

N/A

Power:

1

Power Adapter:

None

Details:

100V-240V, 310W maximum for 27-Inch models.

Global Original Prices

Global original prices for the iMac "Core i5" 3.1 27" (Mid-2011) in 34 different countries and territories follow; organized alphabetically by region.

For global original prices for Intel Macs in one particular country on a single page, please refer to EveryMac.com's Global Original Prices section.

Original Prices - North & South America

Canada:

C$1999

Brazil:

R$7.399

Mexico:

MXN $29,999

United States:

US$1999

Original Prices - Europe

Austria:

€1899

Belgium:

€1899

Denmark:

DKK 14,999

Finland:

€1929

France:

€1899

Germany:

€1899

Ireland:

€1899

Italy:

€1899

Luxembourg:

€1804,83

Netherlands:

€1899

Norway:

NOK 15.490

Portugal:

€1929

Spain:

€1899

Sweden:

SEK 17.995

Switzerland:

CHF 2,249

United Kingdom:

£1649

Original Prices - Asia

China:

RMB 15,498

Hong Kong:

HK$15,488

India:

Rs 107,900

Indonesia:

Rp 19,999,000

Japan:

¥178,800

Korea:

KRW 2,590,000

Malaysia:

RM 6,299

The Philippines:

PHP 99,990

Singapore:

S$2,748

Taiwan:

NT$65,900

Thailand:

THB 66,900

Vietnam:

VND 49,999,000

Original Prices - Australia & New Zealand

Australia:

A$2299

New Zealand:

NZ$3298

If you have additional original prices for this model, please get in touch. Thank you.

Popular Q&As

Ten of the most popular Q&As about the iMac models follow.

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