Confirmed: 5800X can run with MSI B350 Tomahawk (AGESA 1.1.0.0, v.7A34v1Q2) : r/Amd
Close up of modern MSi computer B350 Tomahawk motherboard with PCIe slot, RAM slot, circuitry with MSi on display at the CES, in Las Vegas, NV, USA Stock Photo - Alamy