Nvideia GeFroce2 MX 400 for old G4 450mhz AGP

That's the Mac version right?

DO NOT DO IT!

Not until Apple addresses teh issue with that specific card and Panther. Last year, I upgraded the exact same machine with the exact same card. Jaguar ran flawlessly. On Sunday, I wemt to install Panther on it, the Installer worked as it should, but when the G4 boots from the Panther volume, there are horrid display problems. Apparently, the brilliant Apple software geeks forgot to add teh driver to it. As reported in MacFix it, some users have had success replacing Jaguars kernel extensions for the card into Panther. I was not one of those people, as it is an unclear, hit and miss process. Right now, the G4 is stuck running Jaguar even though I forked over 26o dollars in teh span of 14 months for an OS from Apple. Yes, I called tech support: they sent me to nVidia's site where they cordially ask you to contact your PC's manufacturer for Tech Support. Pure Bull Excrement. I have called Apple twice since the first call and they were useless. So, needless to say: if you buy and install this card you're a dunce.

OWC has Geforce 4MX cards for $70, which is a pretty good deal ($75 with the DVI-VGA adaptor which you'll probably need). The only thing to consider is that your sawtooth doesn't have the additional power connector going to the AGP slot, so you won't be able to use the ADC port on the card, and hence the dual monitor capability. If you're happy with only 1 monitor then this is the way to go. If you'd prefer a dual monitor setup, something like the Radeon 8500 is what you need (with DVI, VGA, and S-video) but I haven't seen those for sale anywhere for a while.