GIGABYTE X570
All X570 major manufacturers boards added.
Can compare completely nuts approach with one of most full featured x399 HEDT boards - •Fatal1ty X399 Professional Gaming
While VRM is not so much overkill like top boards here, but connectivity (M.2 slots and PCIe slots) and network are superior to any >$600 boards here.
And it is $390 new and around $300 used.
Biostar made bios for 4xx chipsets with PCIe 4.0
Biostar activated the functionality on four of the brand's AMD 400-series motherboards.
MSI started making motherboards with 32Mbit BIOS
For now do not see better boards in the list.
All else are lower end boards.
The new AGESA code with number AM4 1.0.0.3 ABB from AMD is made with sole purpose - disable working PCIe 4.0 for motherboards where manufacturer enabled this feature.
As this feature showed that all marketing lies about 6 layer server class boards required (while in reality most <$300 ones are still same 4 layer things), just top management of motherboard manufacturers planned big bonuses at your expense.
Note that AGESA is fully closed and encrypted AMD code residing in BIOS.
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