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Select your iMac.

21.5-inch: 3.06GHz

21.5-inch: 3.06GHz

27-inch: 3.06GHz

 27-inch iMac with Quad-core

27-inch: 2.66GHz
27 inch | 21.5 inch
3.06GHz Intel Core 2 Duo 3.06GHz Intel Core 2 Duo 3.06GHz Intel Core 2 Duo 2.66GHz Intel Core i5
1920 x 1080 resolution 1920 x 1080 resolution 2560 x 1440 resolution 2560 x 1440 resolution
4GB memory 4GB memory 4GB memory 4GB memory
500GB hard drive1 1TB hard drive1 1TB hard drive1 1TB hard drive1
8x double-layer SuperDrive 8x double-layer SuperDrive 8x double-layer SuperDrive 8x double-layer SuperDrive
NVIDIA GeForce 9400M graphics ATI Radeon HD 4670 graphics with 256MB ATI Radeon HD 4670 graphics with 256MB ATI Radeon HD 4850 graphics with 512MB
Ships: Within 24hrs Ships: Within 24hrs Ships: 1-3 business days Ships: 5-7 business days
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£949.00 £1,199.00 £1,349.00 £1,599.00
as low as £32.84 a month† as low as £41.50 a month† as low as £46.69 a month† as low as £55.34 a month†

Technical Specifications

Size and weight

21.5-inch iMac

Height:
17.75 inches (45.1 cm)
Width:
20.8 inches (52.8 cm)
Depth:
7.42 inches (18.85 cm)
Weight:
20.5 pounds (9.3 kg)2

27-inch iMac

Height:
20.4 inches (51.7 cm)
Width:
25.6 inches (65.0 cm)
Depth:
8.15 inches (20.7 cm)
Weight:
30.5 pounds (13.8 kg)2

Connections and expansion

  • One FireWire 800 port; 7 watts
  • Four USB 2.0 ports
  • SD card slot

Communications

  • 802.11nBuilt-in AirPort Extreme 802.11n Wi-Fi wireless networking;2 IEEE 802.11a/b/g compatible
  • BluetoothBuilt-in Bluetooth 2.1 + EDR (Enhanced Data Rate)
  • Built-in 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)

Audio

  • Built-in stereo speakers
  • Two internal 17-watt high-efficiency amplifiers
  • Headphone/optical digital audio output (minijack)
  • Audio line in/optical digital audio input (minijack)
  • Built-in microphone
  • Support for Apple Stereo Headset with microphone

Environmental status report

iMac is designed with the following features to reduce its environmental impact:

  • Arsenic-free display glass
  • BFR-free
  • PVC-free5
  • Highly recyclable aluminium and glass enclosures
  • Meets ENERGY STAR 5.0 requirements
  • Rated EPEAT Gold7

Display

iMac
  • Built-in 21.5-inch (viewable) or 27-inch (viewable) LED-backlit glossy widescreen TFT active-matrix liquid crystal display with IPS technology
  • Resolution
    • 21.5-inch models: 1920 by 1080 pixels
    • 27-inch models: 2560 by 1440 pixels
  • 16:9 aspect ratio
  • Millions of colours at all resolutions
  • Typical viewing angle: Display Screens178° horizontal; 178° vertical
  • Typical brightness: 320 cd/m2 (21.5-inch model); 375 cd/m2 (27-inch model)
  • Typical contrast ratio: 1000:1
  • 27-inch model can be attached to a wall mount, articulating arm or other VESA-compliant mounting solution using the optional VESA Mount Adapter Kit

Graphics and video support

  • 21.5-inch models, one of the following:
    • NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main memory4
    • ATI Radeon HD 4670 graphics processor with 256MB of GDDR3 memory
  • 27-inch model with dual-core processor, one of the following:
    • ATI Radeon HD 4670 graphics processor with 256MB of GDDR3 memory
    • ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory
  • 27-inch model with quad-core processor:
    • ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory
  • iSightBuilt-in iSight camera
  • Mini DisplayPort output port with support for DVI, VGA and dual-link DVI (adapters sold separately). 27-inch models also support input from external DisplayPort sources (adapters sold separately).
  • Support for extended desktop and video mirroring modes
  • Simultaneously supports full native resolution on the built-in display and up to a 30-inch display (2560 by 1600 pixels) on an external display

Software

    Universal
  • Mac OS X v10.6 Snow Leopard (includes iTunes, Time Machine, Quick Look, Spaces, Spotlight, Dashboard, Mail, iChat, Safari, Address Book, QuickTime, iCal, DVD Player, Photo Booth, Front Row, Xcode Developer Tools)
  • iLife (includes iPhoto, iMovie, iDVD, iWeb, GarageBand)

Processor and memory

  • 21.5-inch and 27-inch models, one of the following:
    • 3.06GHz Intel Core 2 Duo processor with 3MB shared L2 cache
    • 3.33GHz Intel Core 2 Duo processor with 6MB shared L2 cache
  • 27-inch models only, one of the following:
    • 2.66GHz quad-core Intel Core i5 processor with 8MB shared L3 cache; Turbo Boost dynamic performance up to 3.2GHz
    • 2.8GHz quad-core Intel Core i7 processor with 8MB shared L3 cache; Turbo Boost dynamic performance up to 3.46GHz; Hyper-Threading for up to eight virtual cores
  • 4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 SDRAM; four SO-DIMM slots support up to 16GB

Storage1

  • 21.5-inch models:
    • 500GB or 1TB 7200-rpm Serial ATA hard drive
    • Optional 2TB 7200-rpm Serial ATA hard drive for iMac with ATI Radeon 4670
  • 27-inch models:
    • 1TB 7200-rpm Serial ATA hard drive
    • Optional 2TB 7200-rpm Serial ATA hard drive

Optical drive

  • Slot-loading 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
    • Writes DVD+R DL and DVD-R DL discs at up to 4x speed
    • Writes DVD-R and DVD+R discs at up to 8x speed
    • Writes DVD-RW discs at up to 6x speed 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
    • Reads CDs at up to 24x speed

Electrical and operating requirements

  • Line voltage: 100-240V AC
  • Frequency: 50Hz to 60Hz, single phase
  • Maximum continuous power: 241W (21.5-inch model); 365W (27-inch models)
  • Operating temperature: 50° to 95° F (10° to 35° C)
  • Storage temperature: -4° to 116° F (-20° to 47° C)
  • Relative humidity: 5% to 95% noncondensing
  • Maximum altitude: 10,000 feet
  • Typical acoustical performance
    • Sound pressure level (operator position): 18 dBA6
  1. 1GB = 1 billion bytes; 1TB = 1 trillion bytes. Actual formatted capacity less.
  2. Weight varies by configuration and manufacturing process.
  3. Wireless Internet access requires a wireless access point and Internet access; fees may apply.
  4. Memory available to Mac OS X may vary depending on graphics needs. Minimum graphics memory usage is 256MB.
  5. PVC-Free AC power cord is available in the U.S., Canada, Mexico, Colombia, El Salvador, Guatemala, Panama, Peru, Puerto Rico, U.S. Virgin Islands and Venezuela.
  6. Acoustics measured on standard 21.5-inch and 27-inch iMac systems with 3.06GHz Intel Core 2 Duo processors. Acoustics may vary by configuration.
  7. iMac achieved a Gold rating from EPEAT in the U.S., Canada, France, Germany and the U.K.

Star Trek is available on iTunes. Star Trek © 2009 Paramount Pictures. STAR TREK and related marks and logos are trademarks of CBS Studios Inc. All rights reserved.  TM and © 2009 Apple Inc. All rights reserved.