Can someone clarify PCIe terminology of the B450 TOMAHAWK

NVIDIA NVS 510 graphics board, Full Height Bracket , Low Profile Bracket , Four locking m-DP to DP Adapters, Four locking m-DP

Was that bad advice? Do I need to buy a x16 slot card?

pcie slot pinout PCIe x16, 8 GBps PCIe x1, GBps PCIe x4, PCIe x16 Slot ; 2 (on some

pcie 50 x16 slot PCIE x16 while the RX 5600 XT has PCIE x16 I am not sure if this is due speed issues or lack of enough power on the PCIe slot, even though the GPU