9600 would be a great card if there were a PCI one. Even a 2X AGP one for Cubes would be ideal. Low power/low heat.
Anyway, here are the two 5200's I tried. One is a cheapy, the other a full FX Ultra.:
http://www.amacapart.com/images/2@5200.jpg
Again, the Ultra would show up properly in system profiler, it just wouldn't run a monitor. If I hit "detect displays" it seemed to try.
It is likely that the core & RAM speeds are off. No one has figured out how to modify these in ROM like we can do with ATI. The "MBToolkit" is a nice try, but rather pointless as it doesn't work. Curiously, the ioreg dump from an ATI card has these values. They are not present from a GF3 dump. There is a field which says something like "Let dev set speed" or something similar which perhaps means the speed values stay in the card and are not acted on or seen directly by CPU.?
As I have posted in Ti4600 thread, we DESPERATELY need to figure out the OS X flasher. I am getting there but may not ever finish. It runs as a software installer, even making you choose an installation volume. OS X ATI flasher runs very much like OS 9 flasher, acting directly on card.
As my well-intentioned family have boxed up 90% of my stuff, including my PC FLashing station, this is a bigger hurdle than it was.
Thomas Perrier has done tremendous work on ATI side. No matter how much I poke & prod him, he won't touch the NVFlash ap or ROM speed situation. Damned unreasonable French, always whining about eating, sleeping, or working. Clearly his priorities are all screwed up.