I currently have the Ryzen 7 5700G. I have a B550 mainboard but because of the G processor it limits the PCI-e to 3.0 even know the board supports 4.0. The mainboard is a Asus rog strix b550-f gaming.
However am I right in thinking that if I get the Ryzen 7 5700X this will enable PCI-e 4.0