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Apple Power Macintosh G3 266 All-in-One Specs

Identifiers: Power Mac G3 AIO - M6321LL/A - N/A* - M4787 - None

All Power Macintosh G3 Models | All 1998 Models | Dynamically Compare This Mac to Others

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Apple Power Mac G3The Apple Power Macintosh G3/266 All-in-One -- based on the compact Gossamer architecture and codenamed Artemis -- features a 266 MHz PowerPC 750 (G3) processor with 512k of backside cache, 32 MB of RAM, a 4.0 GB hard drive, a 24X CD-ROM drive, ATI 3D Rage II+ or Rage Pro (after May 1, 1998) graphics acceleration with 2 MB of VRAM (expandable to 6 MB), and the "Wings personality card" with audio and video input/output -- all packed into an easily expandable all-in-one case. Custom configurations also were available.

Like all other Power Macintosh G3 models, the Power Macintosh G3/266 All-in-One uses the "third-generation" (G3) PowerPC 750 processor with a "backside" level 2 cache for a substantial performance boost compared to earlier systems using a "lookaside" level 2 cache.

The Power Macintosh G3/266 All-in-One is identical to the entry-level Power Macintosh G3/233 All-in-One except the "G3/266" model has a faster processor and the "Wings personality card" which provides S-video and composite input/output ports.

Both Power Macintosh G3 "All-in-One" models were sold exclusively to the education market and were not offered at all outside of North America.

To purchase or upgrade a G3 Mac -- as well as newer Macs -- see site sponsor OHS.

  • Tech Specs
  • Ports
  • Popular Q&As

Click on the category for related details. The most commonly needed info is "open" by default, but all info is important.

March 31, 1998 September 1, 1998
Details: The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" refers to the date a model either was replaced by a subsequent system or production otherwise ended.

Also see: All Macs introduced in 1998.
1 N/A
Details: N/A These numbers reflect an average of user provided 32-bit and 64-bit results as submitted to the Geekbench website. Higher numbers are better.

You also might be interested in reviewing all 32-bit Geekbench 2 user submissions for Macs with the N/A* Model Identifier, which may include multiple models.

To dynamically compare Geekbench results from different Macs side-by-side, see's Ultimate Mac Comparison.
266 MHz PowerPC 750 (G3)
Details: N/A
ZIF Socket Integrated
Details: The Power Macintosh G3 models have the processor mounted on a ZIF socket.
66 MHz 133 MHz
Details: This system has a 133 MHz backside bus and 512k of level 2 cache.
Macintosh ROM 4 MB
Details: N/A
64k 512k (backside)
Details: The 512k of backside cache has a 133 MHz bus.
PC66 SDRAM 10 ns
Details: Supports low profile 10 ns PC66 168-pin SDRAM.
32 MB 768 MB*
Details: *Apple officially reports that the maximum memory capacity of this system is 384 MB with three low profile 128 MB memory modules. However, third-parties have been able to upgrade the RAM to 768 MB with three 256 MB low-profile memory modules.

Site sponsor Other World Computing sells memory -- as well as other upgrades -- for this Power Macintosh G3.

Also see: Actual Max RAM of All G3 & Later Macs.
None 3
Details: There is no performance advantage to installing memory modules in pairs.
Details: *ATI 3D Rage II+ graphics onboard originally, upgraded to ATI Rage Pro starting May 1, 1998.
2 MB* 6 MB*
Details: *This model has 2 MB of VRAM onboard and a single expansion slot that supports an additional 4 MB of VRAM (3.3V 83 MHz 144-pin SO-DIMM).
15.0" (13.8") 1024x768
Details: Apple advertised that this system can support "thousands of colors at up to 1024 by 768-pixel resolution (24-bit), [and] millions of colors at up to 832 by 624-pixel resolution (32-bit), refresh rate of up to 85 Hz."
None N/A
Details: N/A
4.0 GB IDE/ATA-2 & SCSI*
Details: Shipped standard with an IDE/ATA-2 hard drive but also has an internal SCSI bus (up to 5 MB/second) -- drives larger than 128 GB are not supported.

In the US (and many other countries), site sponsor Other World Computing sells storage upgrades for this Power Mac G3.
24X CD-ROM 1.44 MB (Manual)
Details: 24X tray-loading CD-ROM drive standard. It also could be configured with an internal Zip 100 drive as a build-to-order option.
56k (optional) 10Base-T*
Details: *10/100Base-T Ethernet also was available as a build-to-order option.
None None
Details: N/A
None None
Details: N/A
3 PCI, Personality* 2 3.5"
Details: *In the default configuration, this model has three open 33 MHz PCI slots and the "personality card" slot that is occupied by a "Wings personality card" providing audio and video input/output.

It has two 3.5" drive bays (one is internal and intended for a hard drive, and one is external and intended for a Zip 100 drive). By default, the external 3.5" bay is free. The system also has an external 5.25" drive bay occupied by the optical drive.
AppleDesign Keyboard Apple ADB Mouse II
Details: N/A
All-in-One Power Mac G3 AIO (Beige)
Details: N/A
M6321LL/A Power Mac G3 AIO
Details: The Apple order number should be unique to this system.
M4787 (EMC None) N/A*
Details: *This model does not have a Model Identifier. Its Gestalt ID is 510.

Please note that these identifiers refer to more than one model.

Also see: All Macs with the M4787 Model Number, the None EMC Number, and the N/A* Model Identifier.

For more about these identifiers and how to locate them on each Mac, please refer to's Mac Identification section.
3.6V Lithium N/A
Details: N/A
8.0 X 10.2.8
Details: This system cannot run versions of MacOS X more recent than 10.2.8.
Boot/Classic Mode Emulation Only
Details: All Power Macintosh G3 models are capable of booting Mac OS 9 and using Mac OS 9 applications within the Mac OS X "Classic" environment.

Site sponsor OHS specializes in heavily upgraded Macs capable of running both Mac OS X and Mac OS 9 applications.
19.9 x 16.1 x 18.0 59.5 lbs. (26.8 kg)
Details: In inches - height by width by depth, (50.5 cm, 40.9 cm, 45.7 cm).
US$1799 N/A
Details: Please note that on average the estimated current retail pricing of used systems is updated twice a year (please refer to the date on the bottom of the page for the date last updated).

Photo Credit: Apple Computer.

Click on a category for additional details. The most commonly needed info is "open" by default, but all info is important. The icons correspond with the icons for each port on the computer.

1 (DB-15) None
Details: N/A
1 1 (DB-25)
Details: Single ADB port and single SCSI port.
2* 2*
Details: *Two Geoport compatible serial ports standard (one printer, one modem).
None None
Details: N/A
1* (RJ-11) 1* (RJ-45)
Details: *Internal 56k modem optional, 10Base-T Ethernet standard, 10/100Base-T available via build-to-order.
1* 1*
Details: *S-video and composite video input/output standard on the Power Macintosh G3/266 All-in-One.
1 1
Details: Built-in microphone. Includes a single analog 16-bit stereo sound in jack via "Whisper personality card".
1 None
Details: Includes a single analog 16-bit stereo sound out jack via "Whisper personality card".
1 N/A
Details: N/A
1 N/A
Details: 90-264V AC. 300W maximum.

Ten of the most popular Q&As about the Power Macintosh G3 models follow.

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