366MHz G3 iBook running OS X Panther.
533X Compact Flash card instead of a hard drive.
Best performance was found using Firefox 2 that is optimized for the PowerPC, with the NoScript extension. Version 2 of Firefox is that newest one that runs on Panther. The G3 processor is very slow with streaming video, so using NoScript to block Flash animations is key.
Showing the Yahoo homepage with ads enabled, so it’s a little slow. Slashdot is mostly text so it loads and scrolls quickly. Wisebread is a site that uses scripts & ads that give me slow load times on older computers unless NoScript is used. TV Guide site loads fast because scripts are blocked, you can see the TV Listings window is empty at the end. Allowing java would add about 20 seconds, then scrolling the listings is fine.