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Forums > Vintage Apple > Macintosh > Beige PowerPC (Old World ROM) > PCI-based Power Macintosh
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Dave928 Tinkerer Seattle, USA -------- Joined: Sep 17, 2024 Posts: 45 Likes: 33 |
Jun 27, 2025 - #1
I put this on FB but thought I'd put it here too...
I picked this up the other day at RE-PC in Seattle. Power Mac G3/300 MT, 320MB RAM, 6MB VRAM, 20GB Quantum HD. 2 port USB card. Floppy, CD, Zip drive. I added a 256MB DIMM (I had only one on hand, so 1 more on the way from eBay.) Then I transplanted the G3/450 out of my old G3 DT and over-clocked it 1 step, now it's a G3/500: with the RAM tests turned off it boots 9.1 in about 25-30 second. after maxing the RAM, the next projects are, in no order: 1) to replace the internal 250MB Zip drive (I never used Zips) with an internal 2GB Jaz drive. I'll have to make a bezel, I think. 2) remove the spinning HD and install an internal BlueSCSI in the bottom bay with the SD slot in the bezel. 3) PCI video card. 4) re-cap. should be a great bridge machine for getting software on the older macs.
Liked by blturner,ericandCertificate of Excellence |
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blturner New Tinkerer Seattle, WA -------- Joined: Sep 12, 2022 Posts: 28 Likes: 16 |
Jun 27, 2025 - #2
Hello fellow Seattleite!
Coincidentally, I have a Desktop G3 300 I was thinking about just today. I found it on CL, the previous owner also picked it up from RE-PC. It came with 768MB of RAM, 6MB VRAM, DVD, and the AV IO card (which is the main reason I picked it up). I used it recently with a tape player to archive some family audio cassettes. I have a 350Mhz G3 CPU I'm planning to put in it and see if I can get it to go 400Mhz. Right now it's got a 120GB IDE HD with OS 9. I've got some IDE->SATA adapters and some SSDs I'm planning to try out Jaguar on. My family computer in high school was the 266 Desktop and I recall OS X being quite sluggish. I also have an internal 2GB Jaz drive that I'm planning to add to it. Let me know what you come up with for a bezel, that's something I haven't figured out! |
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Dave928 Tinkerer Seattle, USA -------- Joined: Sep 17, 2024 Posts: 45 Likes: 33 |
Jun 28, 2025 - #3
here's the chart for the jumpers to get the speed you want:
http://www.wmld.com/tech/jumperchart2.html Liked by blturner |
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