Hosted by site sponsor WebMate.







Apple Power Macintosh G3 300 Minitower Specs

Identifiers: Power Mac G3 MT - M6572LL/A* - N/A* - M4405 - None

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

Download: PDF Manual


Apple Power Mac G3The Apple Power Macintosh G3/300 Minitower, based on the compact Gossamer architecture, features a 300 MHz PowerPC 750 (G3) processor with 1 MB of backside cache, 64 MB or 128 MB of RAM, a 4.0 GB or 8.0 GB hard drive, a 24X CD-ROM drive, ATI 3D Rage II+ or Rage Pro (starting May 1, 1998), or Rage Pro Turbo (after August 12, 1998) graphics acceleration with 6 MB of VRAM (some configurations offer additional VRAM on a PCI card), and either the "Whisper personality card" with audio input/output or the "Wings personality card" with audio/video input/output -- all packed into an easily expandable minitower case.

The Power Macintosh G3 models were the first Apple Macs to use the "third-generation" (G3) PowerPC 750 processor which also unveiled a new "backside" level 2 cache for a substantial performance boost compared to earlier systems using a "lookaside" level 2 cache.

There were at least three different "standard" configurations of the Power Macintosh G3/300 Minitower -- the original version (M6572LL/A) equipped with 64 MB of RAM, a single 4 GB Ultra/Wide SCSI hard drive, and 6 MB of VRAM for US$3399. A second original configuration (M6494LL/A) was configured with 128 MB of RAM, dual 4 GB Ultra/Wide SCSI hard drives, 6 MB of VRAM installed onboard and an additional 8 MB of VRAM on a 2D/3D graphics PCI card, dual display support, and both 10Base-T and 10/100Base-T Ethernet for US$4599.

The second model (M7247LL/A) -- introduced August 12, 1998 -- shipped with a single 8 GB IDE/ATA-2 hard drive, a Zip drive, Rage Pro Turbo graphics with 6 MB of VRAM and the "Wings personality card" with audio and video input/output for US$2399. Custom configurations also were available.

Despite the age of this system, site sponsor Other World Computing has RAM, hard drives, SSDs, and other upgrades available for this specific Mac while supplies last.



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


March 17, 1998* December 14, 1998*
1 N/A
300 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 150 MHz
Macintosh ROM 4 MB
64k 1 MB (backside)
PC66 SDRAM 10 ns
Details: Supports 10 ns PC66 168-pin SDRAM.
64 MB, 128 MB 768 MB
Details: Site sponsor Other World Computing sells memory -- as well as other upgrades -- for this Power Macintosh G3.

In Germany, site sponsor CompuRAM sells memory and other upgrades for this Power Mac G3.

Also see: Actual Max RAM of All G3 & Later Macs.
None 3
3D Rage II+* EDO SGRAM
Details: *ATI 3D Rage II+ graphics onboard originally, upgraded to ATI Rage Pro starting May 1, 1998, and upgraded to ATI Rage Pro Turbo starting August 12, 1998.
6 MB* 6 MB*
Single Display* 1024x768*
None* N/A
Details: *The M6494LL/A configuration supports dual displays with a pre-installed PCI card.
4.0, 4.0 x2, 8.0 GB N/A
Details: M6572LL/A shipped with a single 4.0 GB Ultra/Wide SCSI hard drive and corresponding PCI card, M6494LL/A shipped with dual 4.0 GB Ultra/Wide SCSI hard drives and a corresponding PCI card, and M7247LL/A shipped with a single 8.0 GB IDE hard drive.

*This system has internal buses for IDE/ATA-2 and SCSI (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.

Also see: SSD Compatibility Guide for All G3 & Later Macs.
3.5" (25.4 mm) IDE/ATA-2 & SCSI*
24X CD-ROM 1.44 MB (Manual)
56k (optional) 10Base-T*
None None
None None*
Details: *Firewire "400" available via build-to-order.
3 PCI, Personality* 1 3.5", 3 5.25"
Details: *In the original default configuration (M6572LL/A), this model has two open 33 MHz PCI slots and the "personality card" slot that is occupied by a "Whisper personality card" providing audio input/output. In the second default configuration (M6494LL/A) one 33 MHz PCI slot is open and the "personality card" slot also is occupied by a "Whisper personality card". The second model (M7247LL/A) -- introduced August 12, 1998 -- shipped with three open 33 MHz PCI slots and the "personality card" slot occupied by a "Wings personality card" which provides audio and video input/output.

It has one "internal" 3.5" bay (for a hard drive) and three external 5.25" bays (which can be used by hard drives and removable media drives). By default, one external 5.25" bay is free on the M7247LL/A configuration (a Zip 100 drive was pre-installed) and two external 5.25" bays are free on the two original models.
AppleDesign Keyboard Apple ADB Mouse II
Tower Power Mac G3 MT (Beige)
M6572LL/A* Power Mac G3 MT
M4405 (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 M4405 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 EveryMac.com's Mac Identification section.
3.6V Lithium N/A
8.0 X 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.
15.2 x 9.6 x 17.8 33.1 lbs. (15 kg)
US$2399-US$4599* N/A
Details: *The original entry-level configuration (M6572LL/A) sold for US$3399, and the high-end dual drive configuration (M6494LL/A) sold for US$4599. The second model (M7247LL/A) sold for US$2399.

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)
2* 2*
None None*
Details: *Firewire "400" available via build-to-order.
1* (RJ-11) 1* (RJ-45)
Details: *Internal 56k modem optional, 10Base-T Ethernet standard, 10/100Base-T available via build-to-order.
None* None*
None 1
1 None
1 N/A
1 N/A

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



Permalink | Report an Error/Typo | Sign Up for Site Update Notices



<< Power Macintosh G3 (Home) | Also see: Power Macintosh G3 FAQ




Established in 1996, EveryMac.com has been created by experts with decades of experience with Apple hardware. EveryMac.com includes, and always has included, original research incorporating detailed, hands-on inspection of packaging, computers, and devices as well as extensive real-world use. All information is provided in good faith, but no website or person is perfect. Accordingly, EveryMac.com is provided "as is" without warranty of any kind whatsoever. EveryMac.com, and the authors thereof, shall not be held responsible or liable, under any circumstances, for any damages resulting from the use or inability to use the information within. For complete disclaimer and copyright information please read and understand the Terms of Use and the Privacy Policy before using EveryMac.com. Copying, scraping, or use of any content without expressed permission is not allowed, although links to any page are welcomed and appreciated.