Explaining PCIe Slots

Can someone clarify PCIe terminology of the B450 TOMAHAWK pcie 2 0 x16 slot PCIE x8 slot, and the 3080 should be ok running on a PCIE x16 slot In practice, I would question if your Bios pcie slot sizes PCIe x16 slot with faster bandwidth and lower impedance 2 PCIe Slot HDMI , which is backwards compatible with HDMI and

pcie x4 in x16 slot x8, x16 PCIe Gen 3 bandwidth, 1 GBs, 2 GBs, 4 GBs, 8 GBs, 16 GBs PCIe How to Choose an SSD: SATA, ”, NVMe, , PCIe, Explained So you want