Update:
Update 7/9/23: The Nimez Modified Driver that @Zyll Goliat posted 'satisfied' my needs, in a different direction. However, If you are new to the thread, please feel free to further-contribute towards my Original Inquiry. Thank You I have a 6500 XT that I'm using alongside a "WX 9100". The...
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NimeZ custom drivers will detect a Radeon PRO-modded MI25 as a Vega 64 Series card, and will restore Wattman compatibility.
In doing so, custom-set PPTs (using OverdriveN) *actually* work as expected, in addition to being able to control P-States, Voltages, Fanspeed, etc. in Wattman (Radeon Software "Performance->Tuning").
Thanks to
@Zyll Goliat for the suggestion.
Note: My MI25-WX9100 was not stable on the NimeZ drivers *until* I used OverdriveN to set more-MI25-like voltage/clock states.
Working (not fully optimized) PPT for my card.
View attachment 304121
The MI25's 'factory' PPT
View attachment 304122
Edit (since I missed these tidbits, before):
It's only the 3rd time I've moved my PC and 7th or 8th 'connect/disconnect' cycle, already my mDP is feeling
loosy-goosy. I think I'll go ahead and order some 90-degree adapters, rather than the short-straight Dell mDP-DP I'm using @TM.