iMac (Mid 2011)


Family: iMac/eMac

Codename: ?

Gestalt ID: 406

Minimum OS: 10.6.6

Maximum OS: 10.10.4

Introduced: May 2011


CPU: Intel Core i5 ("Sandy Bridge")

CPU Speed: 2.5/2.7/3.1 GHz

CPU Cores: 4

FPU: integrated

Bus Speed: 5.0 GT/s (DMI)

Register Width: 64-bit

Data Bus Width: 64-bit

Address Bus Width: 64-bit

Level 1 Cache: 32 kB data, 32 kB instruction

Level 2 Cache: 256 kB per-core (1 MB total)

Level 3 Cache: 6 MB on-processor


RAM Type: PC3-10600 DDR3 SDRAM

Minimum RAM Speed: 1333 MHz

RAM slots: 4

Maximum RAM: 16 GB

Expansion Slots: SDXC card


Screen: 21.5/27" LED-backlit TFT

GPU: ATI Radeon HD 6770M


Max Resolution: 1920x1200/2560x1440

Video Out: via Thunderbolt

Camera: 720p FaceTime HD


Hard Drive: 500 GB/1 TB 7200 RPM (2 TB BTO)

ATA Bus: Serial-ATA

Optical Drive: 24x/24x/16x/8x/8x/6x/4x CD-RW/DVD±RW/DVD±R DL


USB: 4 2.0

Firewire800: 1

Thunderbolt: 1 (2 on 27")

Audio Out: stereo 24 bit mini, Optical S/PDIF, HDMI via Thunderbolt

Audio In: stereo 24 bit mini, Optical S/PDIF

Speaker: stereo

Microphone: mono


Ethernet: 10/100/1000Base-T

Wi-Fi: 802.11a/b/g/n

Bluetooth: 2.1+EDR


Power: 241 Watts

Dimensions: 17.75" H x 20.8" W x 7.42" D

Weight: 20.5 lbs.


The low-end 21.5" model used the ATI Radeon HD 6570M graphics chipset, and had two RAM slots. The 27" models weighed 30.5 pounds, consumed 365 watts of power, and had the following dimensions: 20.4" H x 25.6" W x 8.15" D. The high-end 27" model used the ATI Radeon HD 6970M graphics chipset, with 1 GB of GDDR5 VRAM.

Introduced in May 2011, the iMac (Mid 2011) models improved on the previous iMac (Mid 2010) line, adding quad-core processors across the line. The iMac (Mid 2011) were also the first desktop Macs to include the new high-speed Thunderbolt I/O port. The iMac (Mid 2011 ) shipped in four configurations:

  • 21.5"/2.5 GHz/4 GB RAM/500 GB HD/512 VRAM/$1199
  • 21.5"/2.7 GHz/4 GB RAM/1 TB HD/512 MB VRAM/$1499
  • 27"/2.7 GHz/4 GB RAM/1 TB HD/512 MB VRAM/$1699
  • 27"/3.1 GHz/4 GB RAM/1 TB HD/1 GB VRAM/$1999.

Built-to-order options included up to 16 GB of RAM, 2.8 GHz or 3.4 GHz quad-core Core i7 processors, a 2 TB hard drive, a 256 GB SSD, and 2GB of VRAM.

Picture Credits:
Apple, Inc.