iMac G5 20-inch Late 2005

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This iMac has been discontinued on January 10, 2006, and has been replaced by the iMac 20-inch Early 2006.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 with iSight
Source: – iMac G5 with iSight

iMac G5 20-inch Late 2005 Release Date and Original Price

IntroducedOctober 12, 2005
DiscontinuedJanuary 10, 2006
Model IdentifierPowerMac12,1
Model NumberA1145
Order NumberMA064LL/A
Original Price$1,699
Weight22 Ibs.
9.979 KG
Dimensions18.6” 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


ProcessorPowerPC 970fx G5
Processor Speed2.1 GHz
Number of Cores1
System Bus700 MHz
Cache64 / 32 KB L1
512 KB backside L2

Storage & Media

Storage250 GB
500 GB
Media1 – 4x DVD-R/CD-RW “SuperDrive” slot-loading


Built-in Memory512 MB
Maximum Memory2.5 GB
Memory Slots1 – PC2-4200 240-pin DDR2 SDRAM 533 MHz
Interleaving SupportNo


Built-in Display20″ TFT LCD Display
Brightness280 cd/m²
Resolutions640 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 CardATI Radeon X600 XT
Graphics Memory128 MB DDR
Display Connection1 – Mini-VGA (Composite and S-video with adapter)
Display ModesVideo mirroring only
External ResolutionN/A


Expansion SlotsNone
Optical Drive InterfaceUltra ATA/133
Hard Drive Interface1.5 Gbps Serial ATA (SATA)


Ethernet10/100/1000BASE-T (RJ-45)
ModemApple USB Modem MA034Z/A (Optional)
Wi-FiAirPort Extreme Card 802.11b/g
BluetoothBluetooth 2.0 + EDR
USB3 – 480 Mbps (USB 2.0)
FireWire2 – 400 Mbps
Infrared1 – For Apple Remote only
Audio In1 – 3.5-mm analog/optical input jack
1 – Built-in microphone
Audio Out1 – 3.5-mm analog/optical combo jack
2 – Built-in speakers
Display1 – Mini-VGA (Composite and S-video with adapter)


Original OSMac OS X 10.4.2
Maximum OSMac OS X 10.5.8
FirmwareMac OS ROM
Bundled SoftwareMac OS X 10.4
iLife ’05 (includes iTunes, iPhoto, iMovie HD, iDVD, GarageBand)
Photo Booth
Front Row
DVD Player
Address Book
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

PeripheralsApple Keyboard
Apple Mighty Mouse
Apple Remote


Backup Battery3 V CR2032 Lithium
Maximum Continuous Power180 W
Line Voltage100-240 V AC

Apple Support – iMac G5 (iSight, Late 2005): Technical Specifications

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