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Apple iMac G3 (Early 1999) vs Apple iMac G3 (Revision B)

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

AppleiMac G3 (Early 1999)AppleiMac G3 (Revision B)
Overview
ReleasedJanuary 1999October 1998
Performance
ProcessorPowerPC G3 266 MHz (iMac)PowerPC G3 233 MHz (iMac)
CPU cores11
GraphicsATI RAGE Pro Turbo (6 MB)ATI RAGE Pro (6 MB)
Memory32 MB or 128 MB32 MB or 256 MB
Storage6 GB4 GB
CPU266 MHz PowerPC G3 with 66 MHz system bus and 512 KB backside L2 cache. Generic clock-only record does not infer a silicon supplier.233 MHz PowerPC G3 with 66 MHz system bus and 512 KB backside L2 cache. The generic chip record names no supplier; MacGeneration identifies a Motorola PowerPC 750 in its reviewed Revision B unit.
GPUATI RAGE Pro Turbo with 6 MB video memory. The retained maker resolution table includes a conflicting 2 MB column; Apple’s January 1999 release explicitly states 6 MB.ATI RAGE Pro graphics with 6 MB video memory; Apple’s developer history confirms the graphics change from the original RAGE IIc model.
Memory type32 MB SDRAM in two SO-DIMM slots. Current retained maker sheet gives a 128 MB maximum; older Apple developer history and Italian launch release give 256 MB. The conservative configurations retain the current maker maximum.32 MB SDRAM standard, two SO-DIMM slots. Current retained Apple Revision B sheet supports up to 256 MB; the older developer history gives 128 MB. Configurations use the current maximum, with the conflict recorded.
Storage type6 GB ATA hard drive and tray-loading 24x CD-ROM.4 GB IDE hard drive and tray-loading 24x CD-ROM.
Display
Screen size15″15″
Resolution1024 × 7681024 × 768
Refresh rate75 Hz75 Hz
Display typeNominal 15-inch CRT with 13.8-inch viewable diagonal; not a fixed-native-resolution LCD.Nominal 15-inch CRT, 13.8-inch viewable diagonal; no fixed LCD native resolution.
Display features1024 × 768 at 75 Hz, 800 × 600 at 95 Hz and 640 × 480 at 117 Hz (EveryMac exact-model specification).1024 × 768 at 75 Hz, 800 × 600 at 95 Hz and 640 × 480 at 117 Hz (EveryMac exact A/B specification).
Connections
Ports2 × USB-A, Ethernet, 2 × headphone jack2 × USB-A, Ethernet, 2 × headphone jack
Ethernet0.1 Gb/s0.1 Gb/s
Back portsTwo USB ports on the computer, 10/100BASE-T Ethernet, 56K V.90 modem, audio line-in/out and two front headphone jacks. No FireWire, external VGA output or AirPort option. The infrared port and mezzanine slot from earlier revisions are absent (EveryMac).Two USB ports, 10/100BASE-T Ethernet, 56K modem and audio line-in/out, plus two front headphone jacks. The retained combined maker sheet lists IrDA; Apple’s developer comparison lists it only for the original revision, while MacGeneration’s physical Revision B review shows the infrared window. No standard FireWire or VGA output.
SpeakersBuilt-in stereo speakers with SRS processing and microphone.Built-in stereo speakers and microphone.
Keyboard and mouseApple USB Keyboard and round Apple USB Mouse; Blueberry, Grape, Tangerine, Lime and Strawberry case colours.Apple USB Keyboard and round Apple USB Mouse.
Design and power
TypeAll-in-oneAll-in-one
Operating systemmacOSmacOS
Size and weight detailMaker retained sheet gives weight 40 pounds; height 15.8, width 15.2 and depth 17.6 inches. No converted or sibling metric values are added.Maker retained sheet gives height 15.8, width 15.2 and depth 17.6 inches, weight 40 pounds. Metric figures from the original revision are not borrowed.
In the boxLaunch Mac OS 8.5; retained sheet lists 8.5.1. Apple’s Italian release confirms availability in January 1999; an exact worldwide first-sale day is unestablished.Mac OS 8.5. Conservative October 1998 sale month follows MacGeneration’s exact Revision B retrospective; published introduction days differ and are not treated as a verified worldwide first-sale day.

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