Here’s some info from three different B&W G3s here.
The 400 MHz has the original HDD & only OS 9.2.2.
Other two also have an OS X Tiger-10.4.11 partition.
All have Revision 2 motherboards. 646U2-402 CMD

             

             

             

Getting my mac up and running and gonna zip it and put it on the Google drive for ya Chris

is there any place where macosrom compatibilities incompatibilities are documented

yes what upgrade is that in the pismo G4 550mhz upgrade??

according to the numbering of the slots.. it would seem that the ram is intended to be installed in matched pairs, the two outer slots are one channel and the two inner slots are another channel, if its dual channel memory thats how the G5 memory has to be populated... i didnt know the mdd was the same way but according to that number scheme that would be what that means to me logically from lookin at it

I'm using the MOTU 896HD with OS9 via FireWire and it works great. I have a full MOTU 896HD/MTP AV (USB)/Digital Performer 3 setup with my PowerMac G4 (Digital Audio) and Pismo (w/ G4 550mhz upgrade) so let me know if you have any other questions about it!

yea sure if u have such a thing tailor made for the b+W wierdness i'll give it a go .. yea this machine never ceases to srprise me just when u think u have it tamed it does some wierd shit again!
i did try the freshdrag.img  but it didnt work for me either.. had problems booting up. this machine is  its own one of a kind animal acts + does wierd shit all the time unexpectedly lol

https://mac-classic.com/articles/mac-os-9-compatible-graphics-cards/

https://mac-classic.com/articles/mac-os-9-compatible-graphics-cards/

Try changing them and see if it works. I have a B&W with a cloned GE 9.2.2 Spanish installation and a 9200, and it works perfectly.

I hope this is the problem.

Well, after plugging in each one on a Killawatt reader that arrived today from Amazon, I can now answer my question.  I am not trying to low power anything, since our power costs are actually quite low.  It was more of a curiosity really.

With my power cost at .879 KWh.  Your power costs may be higher or lower.

• G4: Cost is .17 cents per hour average. This is with two SSDs on a PCI controller, dual 1.0 Ghz processors. 1.5GB RAM
• 5,1: Cost is .12 cents per hour average. This is with four SSDs, an Intel Xeon X5680 3.33Ghz, 32GB RAM, ]

So while not a huge difference really at .05 cents per hour, it is still kinda nice to know. It was mostly to see for all the heat these two produce, which is less cost per therm. :-)

For the record, I have newer machines. I am not concerned about the late 2014 iMac, nor my weeks old M4 Mini.

I moved on to 9.X at the same time I retired all G3 B&W Towers.  The B&W was a total beast running 8.6 and at the time I was using a PowerLogix 800 ZIFF CPU.  It ran Cubase VST 4/24 night and day without issues and was my most beloved machine for a 2 year stretch.  I did clearly update to 9.2.2 before I retired the B&W.

Maybe it's time for all G3 B&W towers to all die and be made into planters, tables, and other useful products ?

So an interesting note:  I do have listed in my printed directory a separated "Fresh Drag" 9.2.2 install labeled for the B&W! So at the time I made it there is obviously a difference; I can search for it and upload if you wish, LMK if your done trying.  I am guessing I clearly understood the difference when I made it 20+ years ago, so there will be a difference when comparing it to the famous G4 "Fresh drag Install"