iMac G5(20-inch, Ambient Light Sensor)
Background
Introduced in May 2005, the iMac G5 ALS was a modest improvement in speed and features over the original iMac G5. Airport Extreme and Bluetooth were now standard on all models, along with 512 MB of RAM, considered the minimum for smooth operation under Mac OS X 10.4 Tiger. It was initially available in three configurations: 17" LCD/1.8 GHz/160 GB hard drive/Combo drive/$1299 U.S., 17" LCD/2.0 GHz/160 GB hard drive/SuperDrive/$1499 U.S., and 20" LCD/2.0 GHz/250 GB hard drive/SuperDrive/$1799 U.S.
Source: apple-history
Key Specs
Display20" Widescreen TFT LCD
ChipPowerPC 970fx (G5)
Memory512MB / 2GB
Storage250GB / 400GB
Battery-
Weight11.4kg
Full Specifications
Basic Info
Release Date2005.05
OS SupportOS X 10.4 ~ OS X 10.5
Chip & Storage
ChipPowerPC 970fx (G5)（Single-Core）
Memory512MB / 2GB
Storage250GB / 400GB
Security Chip/
Display
Screen Size20"
Screen TypeWidescreen TFT LCD
Resolution1680 × 1050
PPI99
Typical Brightness230 nits nit
Camera & Audio
CameraNone
Connectivity & Expansion
Wi-Fi802.11g Wi-Fi (AirPort Extreme)
BluetoothBluetooth 2.0 + EDR
Backup Battery3 V CR2032 Lithium battery
Power180W
Body & Dimensions
Width49.3 mm
Height47.2 mm
Thickness18.9 mm
Weight11.4kg
Color
Available Colors
Model Identifier
Model IDPowerMac8,2
Mold ModelA1076