Wow, great work on this!!
the only caveat is for people planning 100% cpu usage with avx/fpu load on top where the vrm will overheat almost instantly and cause throttling/shutdowns, several users on here can verify this issue
Chiming in! My stupid SuperMicro-board-touting "mediaworkstations" rig still overheats regularly (but still can at least do some TDP-limited processing thanks to the help of forum gurus here). I do HPC work where it actually uses all 1-2TB of RAM as well as all the vector units on the 2x7742s.
My advice is to keep doing what you're doing and never throw in the towel and buy from the incompetent mini-companies online that "build" these into workstations (with underpowered fans pointed in the wrong direction! See my overheating thread for the painful details). This is terrific work that is clearly not possible for them even though they are charging for it and putting on the veneer of confidence. I can live vicariously through you and imagine what it would be like to have a fully-performant rig that works reliably. Then I can sit back and mull over how I ended up paying so much for a nerfed, loud, overheating rig that doesn't hold a candle to my awesome old whisper-quiet HP dual Xeon 8180 workstation (a Z8 G4).
BTW, a bit late to respond to this but, I really wish the 7742 allowed the user to just lower the cTDP and package TDP in the BIOS like the 7702 does.
h11dsi-nt rev.2 board with dual 7742 with cTDP and PPL set to 180 watt in bios
According to AMD's spec, the 7742 does not support lowered cTDP and package power limits. So setting this in the BIOS for that CPU should do nothing at all. Can you confirm it actually works?