i have a Beige G3 AIO that i have upgraded a bit (its in my sig). the 120gb HHD is partitioned 3 times , the first is 8gb (for OS X), 2nd is 10gb for OS 9.2.2, and the 3rd is whats left over from the first 2 partitions for downloads, music, installed app's and games. Having a faster HDD in it also helped out allot in system proformance.
i bought a 450mhz G3 1mb l2 cache cpu pulled from a B&W about a year ago for $43 shipped from ebay. since the system bus is 66mhz you could seleck 433mhz or 466mhz so i oped for the faster 466.
i slowly worked my way up to 768mb ram and every time i upgraded the memory the system got faster. i run 10.4.9 with pci extreme enabled with a Radeon 7000 pci video card, upgraded the nboard video memory to 6mb vram witch also helped out in OS X. having PCI extreme enabled is a make or break
with this OS. from what i have experianced from enabling PCI extreme is a huge proformance increase during dvd playback or divx movies. every thing play's smooth for me in tiger with PCI extreme enabled so much better than without it enabled.
playing dvd's in OS 9.2.2 you have to have a Radeon 7000 and above ( will not work on the Rage video cards) plus a hacked version of the apple dvd player found on
www.OS9forever.com and a dvd drive. having the Radeon 7000 also makes a huge proformance gain
i also have a wireless Belken G+ PCI Card which works great in OS X. no drivers for OS 9.2.2 yet but i am working with Belkin to hopefully get that taken care of. also have a PCI usb 1.1 card (trying to find a USB2.0/Firewire PCI Card)
here is what i paied for each upgrade
120GB HDD $57 shipped
PCI Radeon 7000 $27 shipped
4mb Vram upgrade $10 shipped
2 single drive 80 wire 40 pin IDE cables ultra ATA/133 $10 shipped
450 G3 CPU $43 shipped
USB PCI card free
2nd monitor free
Pioneer DVR-110D $47 shipped
Belkin wireless G+ PCI card $35 wal-marts
wireless mouse $10 Big lots
3 256mb (16 chip) PC100 cl2 for $26 each
cant remember what else i think this is all
Tiger 10.4 cd's $50 from ebay
2 Beige G3 AIO's free all thanks to my aunt not knowing how to hook up a Mac (she bought like 10 from a school aution and she could not get none working cause she didnt know you power them on with the KB cause the AIO only has the volume buttons on the front. and the rocker power switch was off and she had the KB plugged into the S-video input on the wings personality card) so it was rather a easy score for me.
if done right these are a great machine