OK I see what I mixed up. Yikes is PCI, Sawtooth is G4. Haven't thought about this much since not very long after my post which you quoted. Sawtooth has the MegArray CPU connector which is much more dense than the ZIF socket in the picture you provided.

This also means my oldest Power Mac would be a Sawtooth or later, because other than my Umax J700 Mac clone, all my PPC Macs have AGP slots.

So, sorry I mentioned the older Yikes model. I also have a ZIF socket CPU card from that era, it also fits the J700.

Does MorphOS support later Sawtooth models, since they have AGP?