requirements are basically :
1- Linux support.
2- support for LSI card + 10GE card + nvme. As in I would be able to use all of them simultaneously preferably without having to go through the chipset. 8x8x4 or 8x4x4. Most of the ones with crossfire support apparently only do 8x4.
3- good VRMs for SoC.
Seems to me that Asrock b450 pro and its R2,0 versions are the most sensible ones, but unfortunately there are not that many reviews about them. I would love to hear from people who have them or used them. How has been your experience?