Power Mac G3/300, G3/333, G3/366
Code Name: Gossamer
A Low End Mac Best Buy
A Road Apple (Rev. 1 only)
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- Jaguar List is for those using Mac OS X 10.2.
Overview
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This faster version of the beige G3 builds on Apple's success with the G3/233 and G3/266.
In addition to a 300 MHz PowerPC 750 (a.k.a. G3) CPU, the G3/300 has the option of a 1 MB backside cache, twice as big as in the older models. Apple also offered a 4 GB ultra wide SCSI drive as an option, which offers better performance than the EIDE drive in the 233 MHz and 266 MHz models.
If you have a hard drive larger than 8 GB, you should partition is so that the first partition is under 8 GB in size (for simplicity, we suggest 7 GB). Failure to do this could eventually result in an unbootable computer, as all System files must be within the first 8 GB of drive space. These Macs can work successfully with larger drives for some time, but once a System files goes outside of the first 8 GB of space, you'll have nothing but problems.
Mac OS X
If you have a hard drive over 8 GB in size, you must partition it or you will not be able to install Mac OS X. If you are creating the partition within OS X, it must be smaller than 7.4 GB as reported by Disk Utility (because sometimes a GB is billion bytes and sometimes it's 1,073,741,824 bytes); we suggest simply setting it at 7 GB to avoid having to redo the whole installation if the partition ends up bigger than specified (it happens). Mac OS X must be completely within the first 8 GB of space on your hard drive or you will not be able to run OS X.
You can only boot OS X from a "master" drive in the beige G3. This applies to hard drives and CD-ROM drives. If the CD-ROM is set to slave, you will not be able to install OS X. If the hard drive is set to slave, you will not be able to boot from it.
Non-Apple upgrades and peripherals (such as unsupported USB devices, replacement drives, and third-party memory) may cause problems when installing or booting into Mac OS X.
Be sure to read and follow Apple's "Read Before You Install" instructions to increase the likelihood of getting OS X installed and running on the first try.
The beige G3 is not officially supported under OS X 10.3 (Panther), but it does work with 10.2.8 and earlier. Panther can be installed using XPostFacto 3, although built-in video is not currently supported.
Cautions
The beige G3 doesn't turn off power to a monitor or other device connected to the power out plug on the back when the computer is shut down. Apple reported this as a cost saving measure.
Data on the RAM Disk is lost during a restart, unlike earlier Macs. Apple also notes that the 100 MHz Pentium PC Compatibility card is incompatible, although this seems to be due to an audio cable problem. There are also reports that the G3 will not stay asleep.
Other compatibility issues:
- GeoPort Modem not supported
- QTC and AMC not supported
- Must disconnect LocalTalk if using ethernet
- Needs updated drivers for StyleWriter 4100 & 4500
- Needs new ethernet driver for use on 10/100 autosensing hubs
- LocalTalk printing slow on busy networks
- Apple TokenRing card not supported
Some of these issues were addressed by later versions of the Mac OS.
When buying a G4 upgrade for the beige G3, make sure it is compatible with this model's 66 MHz bus. Pulled G4s from Apple's "Yikes!" G4 and some OEM G4s are specifically designed for a 100 MHz bus and will not work properly in the beige G3.
Because of the case design, be sure to specify low profile (1.15" maximum height) DIMMs when purchasing memory for the desktop version.
The beige G3 supports 256 MB DIMMs, but they must be built using 128 Mb chips. DIMMs built with 256 Mb chips will work, but the memory controller will only see the first 128 Mb of each chip. Compatible 256 MB DIMMs will have 16 memory chips, eight on each side.
Details
- G3/300 introduced 1998.03.17, discontinued 1999.01.01
- G3/333 and G3/366 introduced 1998.08.12, discontinued 1999.01.01
- requires Mac OS 8 or later, 10.2.x officially supported, 10.3.x and 10.4.x can generally be installed using XpostFacto 4
- CPU: 300 MHz PPC 750
- bus: 66 MHz
- CPU performance
300 MHz: 1041, MacBench 4; 1000, MacBench 5
333 MHz: 1111, MacBench 5 - L2 cache: 1 MB 2:1 backside cache
- RAM: at least 32 MB (expandable to 768MB, desktop version requires low profile DIMMs), uses 3.3V unbuffered 100 MHz 168-pin SDRAM, 3 sockets accept 8, 16, 32, 64, 128, or 256MB DIMMS (some tall DIMMs may not fit desktop case)
- VRAM: 2 MB SGRAM, expandable to 4 or 6 MB, uses 3.3V 83 MHz 144-pin SO-DIMM
- Video: supports resolutions to 1280 x 1024, uses ATI Rage Pro chip
- hard drive: various 4 GB and larger IDE and SCSI drives, varies by configuration. Maximum IDE drive size is 128 GB without third-party support. See How big a hard drive can I put in my iMac, eMac, or Power Mac? for three options.
- there is an internal SCSI connector on the Revision 2 motherboard
- CD-ROM: 24x maximum throughput, DVD-ROM optional (requires a 3rd-party solution were for MPEG-2 video playback)
- internal Zip drive available, standard on some models
- 3 PCI slots
- 1 Personality Card slot (matches Comm Slot II; supports DVD, AV input/output, 128-bit graphics, and FireWire cards)
- microphone: standard 3.5mm minijack, compatible with line-level input including Apple's PlainTalk microphone
- ADB: 1 port for keyboard and mouse
- serial: 2 DIN-8 GeoPorts on back of computer
- SCSI: DB-25 connector on back of computer
- ethernet: AAUI and 10Base-T connectors on back of computer
- size, desktop (HxWxD): 6.3" x 14.4" x 16.9"
- size, mini tower (HxWxD): 15.2" x 9.6" x 17.8"
- weight, desktop: 22.0 lbs.
- weight, mini tower: 33.1 lbs.
- Gestalt ID: 510
- PRAM battery: 3.6V half-AA
- upgrade path: G3 and G4 ZIF CPU upgrades (note that maximum CPU speed you can set using the J16 jumper block is 466 MHz - 7 times bus speed - unless the upgrade sets its own multiplier)
Accelerators & Upgrades
- 8x SuperDrive DVD±RW upgrade, MCE Technologies, $149. 8x4x12x DVD, 24x24x40x CD. 2 MB buffer. Requires OS 9 or OS X.
- Guide to G3 ZIF Upgrades, Low End Mac
- 333 MHz, 400 MHz upgrades for Power Mac G3, MacCPU
- see Clocking the G3 for details on tweaking the G3 motherboard
Online Resources
- Best used Power Mac G3 deals, updated monthly.
- Best classic Mac OS deals. Best online prices for System 6, 7.1, 7.5.x, Mac OS 7.6, 8.0, 8.1, 8.5, 9.0, 9.2.2, and other versions.
- Best Mac OS X 10.0-10.3 deals. Best online prices for Mac OS X 10.0, 10.1, 10.2, and 10.3.
- Best Mac OS X 10.4 'Tiger' deals. Best online prices for Mac OS X 10.4.
- What's the best version of OS X for my Mac?, Ian R Campbell, The Sensible Mac, 2008.02.28. Which version of Mac OS X is best for your hardware depends on several factors.
- Bringing G3 iMacs and other G3 Macs into the Tiger Age, Dan Knight, Mac Daniel, 2007.12.07. Tips on hard drives, memory, WiFi, and getting Mac OS X 10.4 installed on G3 iMacs and other older G3 Macs.
- Low End Mac's Compleat Guide to Mac OS 9, 2008 edition, Charles Moore, Miscellaneous Ramblings, 2008.05.12. Declared dead by Steve Jobs 6 years ago, Mac OS 9 remains fast and stable, but Classic software hasn't kept up with Web changes. What Macs support OS 9, where to buy it, and how to update to version 9.2.2.
- More G4 upgrade advice, secure disk wipes, 500 MHz iMacs with Tiger in action, and more, Dan Knight, Low End Mac Mailbag, 2008.05.09. The importance of securely clearing your hard drive before you pass on your Mac, Pismo and closed lid mode, G3 iMacs in the classroom, and more thoughts on upgrading G4 Power Macs.
- Macintosh peace of mind, PA Semi and the iPhone, $40 802.11g PCI card, and more, Dan Knight, Low End Mac Mailbag, 2008.05.01. Also Power Mac vs. Mac mini, more on DVD User Op Patch, 12" vs. 14" iBook, and VGA for a Power Mac 6100.
- Troubleshooting Eudora, backing up a Beige G3, and why Macs are green, Charles Moore, Miscellaneous Ramblings, 2008.05.01. Problems getting help with Eudora, backup options for a Power Mac G3, and how the long-term usefulness of Macs makes them environmentally friendly computers.
- Picking the right 'Book, clamshell iBook memories, and alternatives to SCSI-to-USB, Charles Moore, Miscellaneous Ramblings, 2008.04.23. Choosing a good used 'Book for Classic, remembering the clamshell iBooks, and alternate options to avoid spending $99 on a SCSI-to-USB adapter.
- Safari 3.1 will be 'crazy fast', OS X 10.5.2 update, 20x SuperDrive from $35, and more, Mac News Review, 2008.02.15. Also Security Update for Tiger, Graphics Update for Leopard, Mac mini "as powerful as a larger desktop", TechTool Deluxe update, and more.
- 3 ways to better YouTube viewing on older Macs, Dan Knight, Low End Mac Mailbag, 2008.02.06. Watching YouTube videos in your browser on G3 Macs can be painfully slow, but there are several ways to improve your YouTube viewing experience.
- WWDC Leopard on upgraded Beige G3, PowerBook vs. iBook, Leopard on an 800 MHz iBook G4, and more, Dan Knight, Low End Mac Mailbag, 2008.01.30. Also MacBook Air points to future notebooks, iPod and iPhone coverage on Low End Mac, changes in Xbench scores, and help with a Mac Classic.
- G3 and G4 Power Macs and Clamshell iBooks still useful, Ben Zalutsky, No Windows for Me, 2008.01.29. Intel CPUs may be blazingly fast, but the old G3 and G4 Macs have plenty of usable life left in them.
- Leopard almost running on Beige G3, Word vs. Pages, overclocking an eMac, and more, Dan Knight, Low End Mac Mailbag, 2008.01.14. Also Compact Flash and the PowerBook 190, beige G3 that won't boot Mac OS 8.1, Google less than completely Mac friendly, and AirPort drivers.
- Vintage Mac video and monitor mania, Adam Rosen, Adam's Apple, 2007.12.17. Vintage Macs and monitors didn't use VGA connectors. Tips on making modern monitors work with old Macs.
- Getting inside vintage Macs and swapping out bad parts, Adam Rosen, Adam's Apple, 2007.12.14. When an old Mac dies, the best source of parts is usually another dead Mac with different failed parts.
- 8 GB partition issue impacts OS 9, RAM for G3 iMacs, success with Open Firmware hack, and more, Dan Knight, Low End Mac Mailbag, 2007.12.10. Partitions over 8 GB can cause problems in the classic Mac OS, more unsupported Leopard reports, another vote against the iPhone, and millions vs. thousands of colors.
- Reasons for sticking with the Classic Mac OS, Tommy Thomas, Welcome to Macintosh, 2007.10.30. Whether it's the simplicity, elegance, speed, or desire not to replace lots of expensive hardware, there are lots of good reasons for sticking with Mac OS 9.
- Interchangeabilty and compatibility of Apple 1.4 MB SuperDrive floppy drives, Sonic Purity, Mac Daniel, 2007.09.26. Apple used two kinds of high-density floppy drives on Macs, auto-inject and manual inject. Can they be swapped?
- AirPort Extreme interference robustness explained, 1 GHz G3 upgrade, new OS X image editor, and more, Mac News Review, 2007.09.14. Also picking the right Mac, Microsoft's wireless mouse with 1 GB of flash memory, Revolabs wireless microphone with iListen, Opera 9.5 for Mac reaches alpha 3, and more.
- The future of G3 Power Macs in the Age of Leopard, Dan Knight, Mac Musings, 2007.09.12. There's no G3 support in Leopard. What does that mean for those with a Beige G3 or a Blue and White G3?
- Best video card for a G3 Power Mac, upgrading vs. buying a newer Mac, many OS 9 fans, and more, Charles Moore, Miscellaneous Ramblings, 2007.06.04. Also iCab is outdated and sluggish, where not to obtain OS 9, installing OS X using FireWire Disk Mode, and troubleshooting a Mac from Linux.
- Why Apple must continue G3 support in Mac OS X 10.5 'Leopard', Dan Knight, Mac Musings, 2007.05.08. "We're worried about what happens if Apple unchecks that box in Xcode to include the instructions necessary to run OS X on G3 processors at all."
- Installing Ubuntu Linux on the Beige G3 Mac, John Honniball, 2005. Step-by-step guide to installing Ubuntu Linux on a beige Power Mac G3.
- Importance of G3 support in 10.5, clever USB/FireWire solution, upgrade options, and more, Dan Knight, Low End Mac Mailbag, 2007.05.01. Also the loss of the PowerBook brand, upgrading to an Intel iMac, Korg and the Mac, Quadra boot problems, and the value of a Mac Classic.
- Format any drive for older Macs with patched Apple tools, Tyler Sable, Classic Restorations, 2007.04.25. Apple HD SC Setup and Drive Setup only work with Apple branded hard drives - until you apply the patches linked to this article.
- Is Apple TV a Mac?, upgrading a Power Mac G4, troubleshooting a Beige G3, and more, Dan Knight, Low End Mac Mailbag, 2007.04.12. Also accessing files on floppies and old Mac on a new Mac, satisfaction and consumerism, and 10th anniversary feedback.
- $25 802.11g card for PCI Macs, drive support for 802.11n AirPort Extreme, Adtron ups flash disks, and more, Mac News Review, 2007.03.02. Also firmware update info for Intel Macs, washable medical mouse and keyboard, TechTool Protogo, and more.
- Musings on low-end SATA cards in PCI Power Macs, Nathan Thompson, Embracing Obsolescence, 2006.11.06. Thoughts on why the inexpensive SATA card might almost work in a pre-G3 PCI Power Mac.
- Old Power Macs and SATA not a marriage made in heaven, Nathan Thompson, Embracing Obsolescence, 2006.11.03. The PCI SATA card said blue & white G3 or newer and Mac OS 8.6 or later, but maybe it would work in an older pre-G3 Power Mac....
- Is Ubuntu Linux a sensible alternative for Mac users?, Charles Moore, Miscellaneous Ramblings, 2006.09.18. If your Mac can run OS X decently, is there any reason to try Ubuntu Linux? If it can't run OS X well, is Ubuntu a reasonable choice?
- Mac OS 8 and 8.1: Maximum size, maximum convenience, Tyler Sable, Classic Restorations, 2006.09.11. Mac OS 8 and 8.1 add some useful new features and tools, and it can even be practical on 68030-based Macs.
- Is the G3 still a practical choice?, Matthew Jay, Macs to the Max, 2006.08.10. Although the G3 is several generations old, it has enough horsepower for most of the things we do on our computers.
- Customizing Mac OS 9, Nathan Thompson, Embracing Obsolescence, 2006.08.01. Fiddling with themes, picking a browser, and making the Classic Mac OS work just the way you want it to.
- The ins and outs of booting Linux on the Mac, Larry Stotler, Linux on the Low End, 2006.07.31. "Old World" Macs can't boot directly into Linux. They need to boot the Classic Mac OS first, then pass control over to Linux.
- Floppy drive observations: A compleat guide to Mac floppy drives and disk formats, Scott Baret, Online Tech Journal, 2006.06.29. A history of the Mac floppy from the 400K drive in the Mac 128K through the manual-inject 1.4M SuperDrives used in the late 1990s.
- More on the best classic Mac OS browser and video capture options with Mac OS 9, Charles Moore, Miscellaneous Ramblings, 2006.06.28. WaMCom as the best classic Mac browser, software suggestions for OS 9 video capture, and two hardware alternatives to having your Mac do the video conversion.
- Making the move from Jaguar (OS X 10.2) to Panther (10.3), Ted Hodges, Vintage Mac Living, 2006.04.11. One advantage of Apple's "no upgrades" policy for OS X - someone can give you their old copy after upgrading without worrying about violating their license.
- What to buy when the old Beige G3 is just too sluggish, Ted Hodges, Vintage Mac Living, 2006.03.27. When your old Power Mac G3 just can't keep up with your needs under OS X, it's time to look at the used Power Mac G4 market. The difference in speed can be astounding.
- Web browser tips for the classic Mac OS, Nathan Thompson, Embracing Obsolescence, 2006.01.03. Tips on getting the most out of WaMCom, Mozilla, Internet Explorer, iCab, Opera, and WannaBe using the classic Mac OS.
- The best browsers for PowerPC Macs and the classic Mac OS, Nathan Thompson, Embracing Obsolescence, 2005.12.16. Two browsers stand out from the pack: iCab 3 is modern and remains under development, and WaMCom brings Mozilla to older Macs.
- How big a hard drive can I put in my iMac, eMac, or Power Mac?, Dan Knight, Mac Daniel, 2005.10.24. A lot of older Macs don't know how to deal with drives over 128 GB in size. We look at three options.
- Sonata SD, Sonnet Tech, 2004.06.01. First new PCI video card for the Mac in ages sells for just US$99, supports OS 7.5.3 and later plus OS X 10.1.5 and later, works with VGA or old Mac monitors, 16 MB VRAM.
- Beige G3 owner reports on TV tuners, Accelerate Your Mac, 2004.03.26. Solutions for watching television and capturing video on OS X and the classic Mac OS.
- Migration issues in moving from a Beige G3 to a Blue and White, Adam Robert Guha, Apple Archive, 2004.02.20. Using an older printer and a SCSI scanner, ejecting a CD, and dealing with a system freeze.
- Stepping up from a Beige G3 to Blue and White, Adam Robert Guha, Apple Archive, 2004.02.16. Why it was time to upgrade, benefits of the newer computer, and troubles caused by the Rev. 1 motherboard.
- Choosing between beige G3 upgrade options, Dan Knight, Low End Mac Mailbag, 2003.04.25. Thoughts on video cards, CPU upgrades, and more.
- The value and limitations of the beige G3, Dan Knight, Mac Daniel, 2003.03.03. As used G3 prices plummet, has the beige G3 become a best buy, or are there good reasons to avoid it?
- Speeding up a beige G3, Dan Knight, Mac Daniel, 2002.10.28. Pumping up an old G3/266 with a faster processor, faster hard drive, and faster drive controller.
- OS X: 10.1.5 corrects beige G3/Radeon incompatibility, obzorg.org. "...Apple has corrected this problem with one notable limitation."
- OS X on a beige G3, Kevin Webb, The Mac Webb, 03.25. The old beige G3/300 handles Mac OS X more comfortably than expected.
- Upgrading an old G3, Dan Knight, Mac Daniel, 03.15. What are the best options for upgrading a beige Power Mac G3?
- OS X: How to get Radeon 7000 to work in a beige G3 with OS X, Accelerate Your Mac, 02.24. You'll need to log in as root and do some rooting around in the Library.
- Rage at being left behind, Dan Knight, Mac Musings, 2001.12.24. It's official - Apple doesn't plan to support graphics acceleration for any Mac with ATI Rage video.
- OS X and the beige G3, Adam Robert Guha, Apple Archive, 2001.12.21. OS X runs decently on a beige G3, but also cripples the floppy drive, printer port, graphics performance....
- OS X graphics speedup with early ATI video, Mac OS X: Optimizing for Earlier ATI Graphics Accelerators, 2001.03.09. ATI Rage II+, IIc, Pro, and LT Pro faster displaying thousands of colors, not millions.
- Review: Sonnet Tempo Ultra ATA66 Macintosh PCI Host Adapter, Dan Knight, 7/28/00. The most economical way to put IDE support in a PCI Power Mac.
- Guide to G4 ZIF Upgrades, Low End Mac
- Guide to G3 ZIF Upgrades, Low End Mac
- Building an ATX G3, Timothy A. Seufert, Accelerate Your Mac!, 3/13. How to drop a Beige G3 motherboard into a standard ATX case. (Not for the faint of heart.)
- G3 Zone, Accelerate Your Mac!
- Hardware: Four ZIF upgrades for Power Mac G3, MacInTouch, 1/27
- Power Mac G3 revisions, Mining Co.
- Hard drive upgrade for the Power Mac G3, Accelerate Your Mac
- 400 MHz upgrade for Power Mac G3, Accelerate Your Mac
- Slower than expected SCSI (MacIntouch Special Report)
- Accelerate Your Mac describes installing a PCI SCSI card and two-drive RAID array (description is for 7500, but should apply to G3 as well)
- Apple Spec: Power Macintosh G3 Desktop, Power Macintosh G3 Mini Tower
Cautions
- Power Macs earlier than the 2002
Quicksilver models do not have built-in support for IDE hard
drives with capacities over 128 GB. Without a third-party solution,
larger drives can only be formatted to 128 GB in these models.
There are three options (as noted on
Accelerate Your Mac):
- Intech's ATA Hi-Cap Support Driver
- A PCI IDE card that supports big drives
- A FireWire enclosure that supports big drives
- Apple has discovered the cause of the dim video problem with the audio/video personality card in the Power Mac G3s. Contact Apple or your Apple dealer for a new card that fixes the problem.
- If you have a Revision 2 motherboard (one way to tell: the System CD is blue, not white), your G3 supports up to 4 IDE/ATA drives. However, it cannot boot from an internal ATAPI Zip drive (which is what Apple installs with the Rev. 2 board) unless the disk has Iomega driver 6.0 or later with Enabler 777 in the Mac OS 8.1 System Folder. Earlier Iomega drives do not support ATAPI Zip drives. ( Apple TIL)
- Macs with IDE hard drive do not provide SCSI termination power, depending on external SCSI devices to provide it. For more details, see SCSI Termination Power.
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