Diverging further OT, I have thought as you do since first I discovered him in April(?). What puzzles me is the lack of, say, complete daughter-cards, especially since the CPUs range almost the complete history of personal computing.

BOT, my Beige DT G3/400MHz, with no change to its jumpering, converted to G4/500MHz in a trice. Drop in and go, so to speak, with OS 9.2.2. I don't plan to use OS X because I shall be using OS 9 apps, Spark 2.6, Toast 5.2.3 and Jam 2.6.

The Beige G3 MT, also G3/400MHz, was the absolute converse. It now boots from nothing, stalling 5s after the appearance of splash screen and before the Sonnet sub-panel, or giving bomb/bus error during boot from all/any boot volumes (including external SCSI, and only FW not being tried), with or without all others disconnected. In this case I had re-jumpered for 500MHz. Of even more consequence, however, I suspect is that I pre-installed too recent a version (ie, 3.1 instead of 2.3.1) of the Sonnet software: one that installed Sonnet's CP Startup DiskX and disabled the normal OS 9.2.2 version of the CP. I shall resume the attack today by removing and 're-educating' one of the HDDs from the MT.

de
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(60x) 13DT + 3PB + PTPro; (G3) 7DT/MT; (G4) 3T + PB. System 8.1 to OS 10.5.8