On that particular machine, your graphics won't benefit from the speed-ups of Quartz Extreme (which offloads a lot of drawing work to the GPU - but only if it's the right kind of GPU). Further, your display is limited to "10x7", which is a bit cramped for OS X's Aqua. But speed is manageable: I have a server running fine on a beige G3 266, but of course its graphics performance is irrelevant.

8.6 introduced the revised "nanokernel", which changes the basics of Classic Mac OS threading, for better compatibility with Carbonised apps. As such, 8.6 is as good as 9.x at running carbon apps - although some app installers still specify 9.something as a minimum OS.

This means that if your apps are now available in carbon versions, you should be able to run them on an 8.6 box, which might save you some upgrading hassle.

On balance I wouldn't bother with 9. Big, bloated and complicated compared with 8.6. If you want to make the move, bite the bullet and jump to X. In the end you'll thank yourself.

Sonnet make a gizmo to convert a Rev C iMac with a faster cpu and add FireWire. Bit pricy though.

GWW

On 3 Apr 2004, at 17:28, Peter da Silva wrote:

How well would MacOS 10.3 run on my Rev c iMac (the fruit coloured
266MHz G3, Rage Pro 6MB VRAM model)? Acceptably fast? Much slower than
8.6 which I currently run?

OS X is going to be slower in some ways, faster in others. The big advantage
is the ability to reliably run lots of programs concurrently without noticable
slowdown, and to keep on working on other things when a program is busy or
waiting on disk or network. Some operations are slowed down by the fancier
graphics, and interprocess communication is a little slower, but all in all
it's more than adequate.



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