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iMac G5 Q&A - Updated January 15, 2007

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What are the differences between the second generation or "Ambient Light Sensor" iMac G5 models?

Please note that the iMac G5 "Ambient Light Sensor" series was introduced on May 3, 2005 and discontinued October 12, 2005.

Like the original iMac G5 systems, the "chassis" of the "Ambient Light Sensor" iMac G5 models rest upon an aluminum stand with an adjustable hinge, and it supports the "Video Electronics Standards Association (VESA) mounting interface standard" which makes it easy to mount the system directly on a kiosk, wall, or articulating arm.

Additionally, as the name implies, all "Ambient Light Sensor" models have a sensor under the edge of the display that dims the sleep indicator light when the room is dark -- a nice touch for a system setup in a bedroom.

The major differences are summarized below in this handy chart:

iMac G5

1.8 17" (ALS)

2.0 17" (ALS)

2.0 20" (ALS)

Processor:

1.6 GHz

2.0 GHz

2.0 GHz

System Bus:

600 MHz

667 MHz

667 MHz

Level 2 Cache:

512k

512k

512k

Memory Type:

PC3200 DDR

PC3200 DDR

PC3200 DDR

Std. RAM:

512 MB

512 MB

512 MB

Max. RAM:

2.0 GB

2.0 GB

2.0 GB

Display:

17.0" TFT

17.0" TFT

20.0" TFT

Resolution:

1440x900

1440x900

1680x1050

Video Card:

Radeon 9600†

Radeon 9600†

Radeon 9600†

Video RAM:

128 MB

128 MB

128 MB

Hard Drive:

160 GB††

160 GB††

250 GB††

Optical Drive:

8X "Combo"

8X DL "Super"

8X DL "Super"

AP Extreme:

Standard

Standard

Standard

Bluetooth 2.0:

Standard

Standard

Standard

Expansion:

AP/BL*

AP/BL*

AP/BL*

Model No:

M9843LL/A

M9844LL/A

M9845LL/A

Orig. Price:

US$1299

US$1499

US$1799

†These models have an ATI Radeon 9600 with 128 MB of DDR SDRAM.
††All hard drives are 7200 RPM.
*AirPort Extreme (802.11g) and Bluetooth 2.0+EDR pre-installed.

Please refer to the Ultimate Mac Comparison feature to dynamically compare any iMac G5 model to any other G3 or later Mac.

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