>>105581121
>X670E
PCIE: 5x16,4x4,3x2
M.2: 2*5x4, 2*4x4
SATA: 6
- PCIEX2 (3x2) shares bandwidth with the SATA3 4/5 ports; using this slot disables 2 SATA ports.

>B850
PCIE: 5x16,3x1,3x1
M.2: 1*5x4, 2*4x4
SATA: 4
- No pcie lane gotchas