iMac (20-inch, Mid 2009) - Technical Specifications

Size and weight

20-inch iMac

• Height: 18.5 inches (46.9 cm)

• Width: 19.1 inches (48.5 cm)

• Depth: 7.4 inches (18.9 cm)

• Weight: 20 pounds (9.1 kg)¹

Connections and expansion

• One FireWire 800 port; 7 watts

• Total of six USB 2.0 ports: four ports on computer, two ports on wired keyboard

Communications

• Built-in AirPort Extreme Wi-Fi wireless networking (based on IEEE 802.11n draft specification);² IEEE 802.11a/b/g compatible

• Built-in 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)

Audio

• Built-in stereo speakers

• Internal 24-watt digital amplifier

• 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

• Arsenic-free display glass

• BFR-free

• PVC-free (internal cables)

• Highly recyclable aluminum and glass enclosures

• Meets ENERGY STAR 5.0 requirements

• Rated EPEAT Gold

Acoustic Performance

DECLARED NOISE EMISSIONS in accordance with ISO 9296

1. L_WAd is the statistical upper-limit A-weighted sound power level (rounded to the nearest 0.1 B).

2. L_pAm is the mean A-weighted sound pressure level measured at the operator position (rounded to the nearest dB).

3. 1 B (bel) = 10 dB (decibel).

Display

• Built-in 20-inch (viewable) glossy widescreen TFT active-matrix liquid crystal display

• Resolution: 1680 by 1050 pixels

• Millions of colors at all resolutions

• Typical viewing angle: 
160° horizontal
, 160° vertical

• Typical brightness: 290 cd/m2

• Typical contrast ratio: 800:1

Graphics and video support

• NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main memory³

• Mini DisplayPort output port with support for DVI, VGA, and dual-link DVI via adapter⁴

• Built-in iSight camera

• 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

Processor and memory

• One of the following:

  • 2.0GHz Intel Core 2 Duo processor

  • 2.26GHz Intel Core 2 Duo processor

• 3MB shared L2 cache at full processor speed

• 1066MHz frontside bus

• 1GB (one 1GB SO-DIMM) or 2GB (two 1GB SO-DIMMs) of 1066MHz DDR3 SDRAM; two SO-DIMM slots support up to 8GB

Storage

Hard drive⁵

• 160GB 7200-rpm Serial ATA hard drive⁵

  • Optional 320GB 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: 200W

• Operating temperature: 50° to 95° F (10° to 35° C)

• Storage temperature: -40° to 185° F (-40° to 85° C)

• Relative humidity: 5% to 95% noncondensing

• Maximum altitude: 10,000 feet

What’s in the box

• iMac

• Apple Keyboard

• Mighty Mouse

• Cleaning cloth

• Power cord

• Install/restore DVDs

• Printed and electronic documentation

Configurations

Options

Accessories

• Time Capsule

• AirPort Express Base Station

• AirPort Extreme Base Station

• Apple 8x DVD-R Media Kit

• Apple Mini DisplayPort to DVI Adapter

• Apple Mini DisplayPort to VGA Adapter

• Apple Mini DisplayPort to Dual-Link DVI Adapter

• Apple FireWire Cable

• AppleCare Protection Plan

Applications

• iWork

• Aperture

• Logic Express