Gigabyte MZ72-HB0 and dual Epyc 7773X

Welcome back to the forum and I am pleased to hear SIV is still working well on your Dual Xeon 8280s. On Intel it's easy to read the CPU Core temps as they are in an MSR, as for the DIMMs these come from the MCH as SMBus access to the DIMMs is blocked on your ASUS WS-C621E-Sage.

SIV 5.72 Beta-01 reports all the core temps on my Raphael + Vermeer + Matisse CPUs and I suspect getting it to do the same for your Epyc 7773X (Milan) won't be too hard, but I will need you to run some tests so I can figure out where to read them from as they are in different locations for Raphael and Vermeer/Matisse. Would you like to help? If so I will send you SIV 5.72 Beta-02 and need the Menu->File->Save Local files so I can add Milan support.

As for the DIMMs then let's get the CPU cores working and then move onto the DIMMs. I wonder what will show up on [SMB Bus], I suspect there will be an I2C multiplexor as the system will have more than eight DIMMs.