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27-inch Apple iMac - Late 2009*
2.66GHz Core i5 or 2.8GHz Core i7
Model ID: iMac11,1 View how to find model ID

Processor / Memory

  • 2.66GHz Quad-core Intel Core i5
    • Turbo Boost up to 3.2GHz
    • 8MB on-chip shared L3 cache
  • Optional 2.5GHz Quad-core Intel Core i7
    • Turbo Boost up to 3.46GHz
    • 8MB on-chip shared L3 cache
    • Supports Hyper Threading
  • Base RAM: 4GB (two 2GB SO-DIMMs)
  • 1066MHz DDR3 SO-DIMM PC10600 memory
  • Four total memory slots
OWC Memory Upgrades: Add up to 32GB of memory. OWC certified for up to 32GB of memory.

Internal Drives

  • SATA Revision 2.0 (3Gb/s) Hard Drive Bus
  • One 3.5-inch Hard Drive Bay
    • 1.0TB or 2.0TB 7200RPM SATA Drive
  • SATA Revision 2.0 (3Gb/s) Optical Drive Bus
  • Slot-loading 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
    Maximum write: 8x DVD-R, DVD+R; 4x DVD-R DL (double layer), DVD+R DL (double layer), DVD-RW, DVD+RW; 24x CD-R; 16x CD-RW
    Maximum read: 8x DVD-R, DVD+R, DVD-ROM; DVD-ROM (double layer DVD-9), DVD-R DL (double layer), DVD+R DL (double layer), DVD-RW, DVD+RW; 24x CD
Hard drive upgrade: Add up to 6.0TB of HDD storage*
Add an External Optical Drive: Blu-ray or DVD options available


  • Headphone port
  • SD card slot
  • Four USB 2 ports
  • One FireWire 800 port; 7 watts
  • 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
  • Kensington lock slot


  • Line voltage: 100-240V AC
  • Frequency: 50Hz to 60Hz, single phase
  • Maximum continuous power: 365W
  • Operating temperature: 50° to 95° F (10° to 35° C)
  • Relative humidity: 5% to 95% noncondensing
  • Maximum operating altitude: 10,000 feet


  • Built-in AirPort Extreme 802.11n Wi-Fi wireless networking
  • Bluetooth 2.1 + Enhanced Data Rate (EDR) wireless technology
  • 10/100/1000BASE-T Ethernet (RJ-45)


  • Headphone/optical digital audio output (minijack)
  • Audio line in/optical digital audio input (minijack)
  • Built-in stereo speakers
  • Two internal 17-watt high-efficiency amplifiers


  • Built-in microphone
  • Support for Apple iPhone headset with microphone

Display / Monitor Capability

  • 27-inch (diagonal) LED-backlit display with IPS technology
  • 2560 by 1440 resolution with support for millions of colors
  • 16:9 aspect ratio
  • Typical viewing angle: 178° horizontal; 178° vertical
  • Typical brightness: 375 cd/m²
  • Can be attached to a wall mount, articulating arm, or other VESA-compliant mounting solution using the NewerTech NuMount VESA Adapter for iMac

Graphics / Video

  • ATI Radeon HD 4850 graphics processor with 512MB of GDDR5 memory
  • iSight camera
  • 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
  • Support for extended desktop and video mirroring modes
  • Support input from external DisplayPort sources (adapters sold separately)

Keyboard / Mouse

  • Keyboard Not included
  • Mouse Not included

Dimensions / Weight

Height: 20.4" (51.7cm)
Width: 25.6" (65.0cm)
Depth: 8.15" (20.7cm)
Weight: 30.5lb. (13.8 kg)