Indeed, at least three of the above processors were not even used in the making of the post. [
] ]'>I've used Mozilla on a much less capable (300MHz OC'd 233MHz G3, 160 MB of RAM, 512KB L2 Cache, Mac OS 86) Beige G3, and it performed rather flawlessly. Good quick screen renders, remarkably decent multimedia support with its rather dated plugins and Quicktime, and probably the fastest file downloads of all the browsers I've used in Classic Mac OS. And I've used most of them -- Opera, iCab, IE, WamCom (Mozilla), Navigator, Communicator, WannaBe...
My one dislike of Mozilla on PPC Mac OS: It has, by far, the longest boot time. That's why I generally just use IE most of the time. It just boots a hell of a lot faster.