Higher end mainboards can (but not necessarily always do) offer you a few things, like better energy management resulting in a more stable and efficient system or the headroom to overclock. In this case you’d also get the next tier of current AMD chipsets, the X670, which offers more PCIe 4.0 lanes, a M2 slot with a PCIe 5.0 x4 connection and double the possible USB-C 10 Gbps and 20 Gbps connectors. Depending on what your priorities are, you might also consider a board with a B650E chipset in the Same price range, which gives you everything the B650 has but additionally has one M2 PCIe 5.0 slot and upgrades your PCIe x16 slot to 5.0 aswell, which the X670 sacrifices for the additional capacity in USB-C