Apple iMac G5 (17-inch, Ambient Light Sensor) vs Apple iMac G5 (20-inch, iSight)

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iMac G5 (17-inch, Ambient Light Sensor) compared with iMac G5 (20-inch, iSight)

	AppleiMac G5 (17-inch, Ambient Light Sensor)	AppleiMac G5 (20-inch, iSight)
Overview
Released
Released	May 2005	October 2005
Performance
Processor
Processor	IBM PowerPC G5 1.8 GHz (iMac Ambient Light Sensor) or IBM PowerPC G5 2 GHz (iMac Ambient Light Sensor)	IBM PowerPC G5 2.1 GHz (iMac iSight)
CPU cores
CPU cores	1	1
Graphics
Graphics	ATI Radeon 9600 (128 MB)	ATI Radeon X600 XT (128 MB DDR)
Memory
Memory	512 MB or 2 GB	512 MB, 1 GB, 1.5 GB or 2.5 GB (better)
Storage
Storage	160 GB to 400 GB	250 GB to 500 GB (better)
CPU
CPU	1.8 GHz PowerPC G5 with 600 MHz frontside bus and Combo drive, or 2.0 GHz with 667 MHz bus and SuperDrive; both have 512 KB L2 cache. Generic maker-clock chip records retain the single-core identity cross-checked with exact EveryMac sources; uncertain 970/970FX silicon revision is not inferred.	2.1 GHz PowerPC G5 with 512 KB L2 cache and 700 MHz frontside bus; single-core identity cross-checked with exact EveryMac source. Generic maker-clock chip record avoids borrowing uncertain silicon revision or unpublished thread/power figures.
GPU
GPU	ATI Radeon 9600 with 128 MB dedicated video memory; AGP 8x support.	ATI Radeon X600 XT with 128 MB dedicated DDR video memory; PCI Express.
Memory type
Memory type	400 MHz DDR SDRAM (PC3200), two 184-pin DIMM slots; 512 MB standard and 2 GB supported maximum. Configurations conservatively list the published base and maximum; no intermediate factory pairing is inferred.	533 MHz DDR2; 512 MB built in plus one expansion slot. Maker factory upgrades provide total capacities of 1, 1.5 or 2.5 GB.
Storage type
Storage type	160 GB 7200 rpm Serial ATA hard drive, configurable to 250 or 400 GB. The 1.8 GHz base has a Combo drive (DVD reading/CD writing); the 2.0 GHz base has an 8x SuperDrive with 2.4x double-layer DVD writing.	250 GB 7200 rpm Serial ATA hard drive, configurable to 500 GB. Slot-loading 8x SuperDrive with 2.4x double-layer DVD writing, 4x DVD rewritable writing and 24x CD writing.
Display
Screen size
Screen size	17″	20″
Resolution
Resolution	1440 × 900	1680 × 1050 (better)
Brightness
Brightness	–	280 nits
Display type
Display type	Widescreen LCD with millions of colours; panel technology, refresh rate and brightness not published in the retained exact maker specification.	TFT active-matrix LCD with millions of colours; typical contrast 800:1 and viewing angles of 170 degrees horizontal and vertical. Panel technology and refresh rate unpublished.
Connections
Ports
Ports	3 × USB-A, Ethernet, headphone jack	3 × USB-A, Ethernet, headphone jack
Ethernet
Ethernet	1 Gb/s	1 Gb/s
Wi-Fi
Wi-Fi	802.11g	802.11g
Bluetooth
Bluetooth	2.0 + EDR	2.0 + EDR
Camera
Camera	–	iSight camera
Back ports
Back ports	Three USB 2.0 ports on the computer, plus two USB 1.1 ports on the keyboard; two FireWire 400 ports, Mini-VGA output, Gigabit Ethernet, headphone/optical output and audio line-in. Built-in 56K V.92 modem is confirmed by launch press and exact manual; retained USB-HSP wording describes its internal transport, rather than an extra external USB device.	Three USB 2.0 ports on the computer, plus two USB 1.1 ports on the keyboard; two FireWire 400 ports sharing 8 W, Mini-VGA output, Gigabit Ethernet, headphone/optical output and audio line-in.
External displays
External displays	Optional Mini-VGA adapters provide VGA, S-video or composite output; no DVI connector is listed.	Optional Mini-VGA adapters provide VGA mirroring or S-video/composite output; no DVI connector or extended-desktop mode is listed.
Camera
Camera	–	Built-in iSight; exact maker resolution is unpublished and omitted.
Speakers
Speakers	Built-in stereo speakers and microphone.	Built-in stereo speakers and microphone; 12 W digital amplifier.
Keyboard and mouse
Keyboard and mouse	Apple Keyboard and Apple Mouse; the later Mighty Mouse and iSight-generation remote are not substituted for the launch accessories.	Apple Keyboard, Mighty Mouse and Apple Remote.
Design and power
Type
Type	All-in-one	All-in-one
Weight
Weight	8.4 kg (better)	10 kg
Width × depth × height
Width × depth × height	426 × 173 × 430 mm	493 × 189 × 472 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	–	Maker reference weight; actual weight varies with configuration and manufacturing process.
Power supply
Power supply	–	Maximum continuous power 180 W; 100–240 V AC, 50–60 Hz.
In the box
In the box	iMac G5, keyboard, mouse, power cord, install/restore DVDs and documentation; Mac OS X Tiger, iLife ’05 and AppleWorks. Classic support is available but not preinstalled and cannot boot Mac OS 9.	iMac G5, Apple Keyboard, Mighty Mouse, Apple Remote, power cord, install/restore DVDs and documentation; Mac OS X Tiger, iLife ’05, Front Row and Photo Booth. Apple announced availability the week after 12 October 2005; release remains October at month precision.