The Apple iMac G5 20-inch Late 2005 is a personal computer that was designed, manufactured, and sold by Apple from 2005 to 2006 as part of the iMac G5 series of iMac computers. The computer has been introduced on October 12, 2005, and its price started at $1699.
The new iMac G5 features a 2.1 GHz PowerPC 970fx G5 processor, 512 MB of RAM, 20-inch LCD TFT Display, 250 GB hard drive, slot-loading 4x DVD-R/CD-RW “SuperDrive”, Ambient Light Sensor, iSight camera, built-in Bluetooth 2.0 + EDR, USB 2.0 ports, standard AirPort Extreme Card, and 128 MB ATI Radeon X600 XT graphics.
This iMac has been discontinued on January 10, 2006, and has been replaced by the iMac 20-inch Early 2006.
Today iMac G5 20-inch Late 2005 is 17 years old!

iMac G5 20-inch Late 2005 Release Date and Original Price
Introduced | October 12, 2005 |
Discontinued | January 10, 2006 |
Model Identifier | PowerMac12,1 |
Model Number | A1145 |
EMC | 2082 |
Order Number | MA064LL/A |
Original Price | $1,699 |
Colors | White |
Weight | 22 Ibs. 9.979 KG |
Dimensions | 18.6” H x 19.4” W x 7.4” D 47.24 cm H x 49.27 cm W x 18.79 cm D |
Tech Specs
Processor
Processor | PowerPC 970fx G5 |
Processor Speed | 2.1 GHz |
Architecture | 64-bit |
Number of Cores | 1 |
System Bus | 700 MHz |
Cache | 64 / 32 KB L1 512 KB backside L2 |
Storage & Media
Storage | 250 GB 500 GB |
Media | 1 – 4x DVD-R/CD-RW “SuperDrive” slot-loading |
Memory
Built-in Memory | 512 MB |
Maximum Memory | 2.5 GB |
Memory Slots | 1 – PC2-4200 240-pin DDR2 SDRAM 533 MHz |
Interleaving Support | No |
Display
Built-in Display | 20″ TFT LCD Display |
Brightness | 280 cd/m² |
Resolutions | 640 x 480 800 x 500 800 x 600 840 x 524 1024 x 640 1024 x 768 1280 x 800 1344 x 840 1680 x 1050 |
Graphics
Graphics Card | ATI Radeon X600 XT |
Graphics Memory | 128 MB DDR |
Display Connection | 1 – Mini-VGA (Composite and S-video with adapter) |
Display Modes | Video mirroring only |
External Resolution | N/A |
Camera | iSight |
Expansion
Expansion Slots | None |
Optical Drive Interface | Ultra ATA/133 |
Hard Drive Interface | 1.5 Gbps Serial ATA (SATA) |
Connections
Ethernet | 10/100/1000BASE-T (RJ-45) |
Modem | Apple USB Modem MA034Z/A (Optional) |
Wi-Fi | AirPort Extreme Card 802.11b/g |
Bluetooth | Bluetooth 2.0 + EDR |
USB | 3 – 480 Mbps (USB 2.0) |
FireWire | 2 – 400 Mbps |
Infrared | 1 – For Apple Remote only |
Audio In | 1 – 3.5-mm analog/optical input jack 1 – Built-in microphone |
Audio Out | 1 – 3.5-mm analog/optical combo jack 2 – Built-in speakers |
Display | 1 – Mini-VGA (Composite and S-video with adapter) |
Software
Original OS | Mac OS X 10.4.2 |
Maximum OS | Mac OS X 10.5.8 |
Firmware | Mac OS ROM |
Bundled Software | Mac OS X 10.4 iLife ’05 (includes iTunes, iPhoto, iMovie HD, iDVD, GarageBand) Photo Booth Front Row Dashboard Spotlight iChat Safari Sherlock QuickTime iSync iCal DVD Player Address Book AppleWorks iWork (30-day trial) Classic environment Quicken 2006 for Mac 2006 World Book Nanosaur 2 Marble Blast Gold Microsoft Office 2004 for Mac Test Drive Zinio Reader XCode Developer Tools Apple Hardware Test |
Keyboard and Mouse
Peripherals | Apple Keyboard Apple Mighty Mouse Apple Remote |
Power
Backup Battery | 3 V CR2032 Lithium |
Maximum Continuous Power | 180 W |
Line Voltage | 100-240 V AC |
References:
Apple Support – iMac G5 (iSight, Late 2005): Technical Specifications