اطلاعات آیمک (iMac 20-Inch Mid 2009)

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 iMac

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

Display iMac

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

 iMac 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