My G3 has an internal Zip 100 and my G4 QS has an internal Zip 250. Furthermore, I also have an Archos firezip 250 firewire which is glacially slow. :D
Hi!
Have you tried a search on barefeats? Don't know if these apply to your needs but…
http://barefeats.com/gef6800.html
http://barefeats.com/gef6800b.html
I have a dual core 2 x 2.3GHz G5 with the stock nvidia 6600 (256MB) that works fine. I don't do any gaming at all but a friend sold me...