I have now, with the help of an oooold ATI Mach 64 GX card (with only 2MB of VRAM) gotten MacOS X 10.3.9 to work on the PowerMac. I then substituted the card with an IMS Twin Turbo card that has 4MB of VRAM. It seems to work well, considering that this machine has almost 10 years (a PeeCee normally doesn't last this much). If I were to upgrade this machine, I would start by the following two items (perhaps not in this order):
- Substitude its HD.
- Add more RAM to it. MacOS X likes a lot of RAM.
Perhaps I may get a Sonnet Tech Tempo Trio card, which features an IDE controller, a Firewire controller and a USB 2.0 controller in just one card. Seems like a good deal, especially for using (faster, modern) IDE HDs, all this being able to just use a single slot of the machine.