IIRC, that was one of the late PowerPC 601 chips, 110mhz was the second fastest (factory) speed from it, the 8200/120 was the only thing faster. You might be able to over clock it to 135mhz.
I think the 8150 was a server version of the 8100. I don't think the servers came with a graphics card as standard, if you have, that's great, if it's one of the 4mb pds cads, then you are very lucky.
It came with 8 simm slots, back then 32mb sticks were as good as it got, giving a max ram of 264 MB. Stick size was the limiting factor, and 64mb sticks are available with a bit of hunting around eBay (for instance) for a 512mb total.
There are even 128mb sticks! For a total of 1Gb (theoretically).
I read somewhere on the net*, the 256mb sticks for the HP Workstation 3000/9000 (part no. A3737-60001) work on the these models.
This would give a theoretical 2Gb of ram!!!
I suspect the machine wouldn't recognize all of it, but I'd love to know how much it did recognize.
Also, I think I remember there were G3 and G4 upgrade cards available for this machine.
Please, please, keep us posted.
* I read it on the net, so there's no guarantee it's true.