Usable..but somewhat slow:
350-500 MHz G3 (Blue Power Macs, iMacs, iBooks, PowerBooks)
350-400 MHz G4 (Power Macs, PowerBook)
Agreed. I'm running 10.1.2 on a Sawtooth G4, 400 MHz, 576 MB RAM, Radeon AGP, OS 9.2.2 for classic.
Performance is fine in all instances except the following:
1. Heavy network activity brings the OS to it's knees. Heavy network use defined as: I'm running mail, Omniweb with 15 browser windows open ,and downloading 10 files all larger than 5 MB, over a modem connection. iTunes is running and stuffit expander pops up to do its thing every so often.
During these conditions, if I'm trying to use the finder to sort files, put newly downloaded files away, etc., everything is painfully slow. Dragging an item to the trash takes about 10 sec., I have to wait while it moves from it's finder window across the screen to the trash. At every window border it stalls, as if computing the transparency over the new background is too much for my G4.
2. Classic is open and running. When I'm using classic, my system crawls. If Classic is open and I'm surfing the web, forget about it, the system is a sloth. Top shows True Blue using little CPU time (15% maybe), but it's still a downer.
so OS X isn't much of a thoroughbred on my Sawtooth. There's not much else I can do for my hardware; the Radeon is already bandwidth-limited, I've got plenty of RAM (rarely see any pageouts according to top, memory stick, free RAM), and I'm using the newest version of all OS software, both OS X and OS 9.
Only solution I have is A) buy a new Mac, or B) buy a CPU upgrade.
And that's the real kicker. I had planned on buying a CPU upgrade every year or so when i bought my Sawtooth, but none seem to be available! Why aren't there 867 MHz upgrade cards for Sawtooths? The upgrade companies could make a killing...so it must be something else, perhaps Apple isn't letting Moto sell any G4s to these guys? Or maybe the new chips are so expensive that the upgrade companies figure it would be cheaper for people to sell their old macs and buy new ones?