iMac (20” USB 2.0)

Introduced: September 2003
Terminated: July 2004


The iMac (20” USB 2.0) brought the speed of the iMac ran at 1.25Ghz.  It had an 80 or 160Gb hard drive and 256Mb of RAM.  It had a SuperDrive.


The new release of the iMac was a rarity in that it did not actually increase the processor speed of the low-end model.  The major improvement simply brought the 15” model up to the standard of the 17” model including features like Bluetooth and AirPort extreme capability.  Both models also now had the faster USB 2.0 standard.
A 20” top of the line model running at 1.25Ghz was introduced as part of this release.


iMac (20” USB 2.0)


Processor: PowerPC 7455 v3.3 (G4)
Number of Cores: 1
Processor Speed: 1.25 GHz
Benchmarks: 1.25 GHz: 667
Cache: 64 KB L1, 256k backside (1:1) L2
System Bus: 167 MHz
Hard Drive: 80 or 160 GB 7200-rpm
Media: Tray-loading 4x SuperDrive
Peripherals: Apple Keyboard, Apple Mouse
Colors: White
Weight and Dimensions (US): 40.1 lbs., 13.93 - 20.9” H x 17.3 - 20.2” W x 10.6 - 17.3” D; base diameter: 10.6”
Weight and Dimensions (Metric): 18.2 kg, 35.4 - 53.1 cm H x 43.9 - 51.3 cm W x 26.9 - 43.9 cm D; base diameter: 26.9 cm
Original Mac OS: Mac OS X 10.3 (7C9)
Later Mac OS: Mac OS X 10.3.1 (7C150)
Maximum Mac OS: Latest release of Mac OS X
Hardware Test: AHT (iMac) 2.0.2
Firmware: Open Firmware
Firmware Update: None
Logicboard RAM: None
Maximum RAM: 2.0 GB (Actual) 1.0 GB (Apple)
Type of RAM Slots: 1 - PC2700 200-pin SO-DIMM (user accessible), 1 - PC2700 184-pin SDRAM (factory installed)
Minimum RAM Speed:—
Interleaving Support: No
Graphics Card: NVIDIA GeForce FX 5200 Ultra
ATI Card Model:—
Graphics Connection: 4x AGP
Graphics Memory: 64 MB DDR
Built-in Display: 20-inch LCD (200 candela per meter squared)
Resolutions: 1680 by 1050 (native), 1344 by 840, 1280 by 800, 1024 by 640, 840 by 524, and 800 by 500 pixels at 16:10 aspect ratio
Display Modes: Video mirroring only
Display Connection: 1 - Mini-VGA (Composite and S-video with adapter)
Video Camera: None
Expansion Slots: None
Hard Drive Bus: Ultra ATA/100 (ATA-6)
Large Drive Support: Yes (128 GB or larger per drive)
Optical Drive Bus: Ultra ATA/66
Backup Battery: 3.6 V Lithium (922-4760)
Max Watts: 190 W
Line Voltage: 90-264V AC
AirPort: Optional AirPort Extreme card (802.11b/g)
Bluetooth: Optional Bluetooth 1.1
Ethernet: 10/100BASE-T (RJ-45)
Modem: 56k v92
USB: 3 - 480 MBit/s
FireWire: 2 - 400 MBit/s (8W total power)
Audio In: 1 - 3.5-mm analog input jack, Built-in microphone (24-bit 48 kHz sample rate)
Audio Out: 1 - 3.5-mm analog output jack, 1 - 2.5-mm Apple Pro Speaker minijack, Built-in speaker (24-bit 48 kHz sample rate)


Introduced in September 2003, the iMac (20” USB 2.0) was discontinued in July 2004.



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