What is the maximum read and write speed for pcie x4 slots?

4080 pcie question pcie 3 slot The smallest of the PCI Express slots, your standard PCI Express x1 slot is essentially your starting point for most expansion cards, especially port expansions pcie 2 slot Additionally, the x16 slot is reduced to x8 when used in this way PCIe x16 Bifurcation is supported to a maximum of three PCI Express devices

pcie x1 slot function A single PCIe slot can now support x16, x8, x4, x2, or x1 lanes For example, PCIe x4 indicates a Gen 3 expansion slotcard with four lanes