What is the difference between PCIe Gen 3 and PCIe Gen 4?

What is the difference between PCIe Gen 3 and PCIe Gen 4? pcie x1 in x16 slot Pcie x1 slot blocked by my gpu, considering using the pcie x16 slot for my wifi card pciex1 slot So, to answer your original question, if you're happy to abandon any other PCI devices you currently have, you can choose a motherboard with more PCIe x1 slots;

pciex1 slot The number of lanes that a PCIe device supports is typically expressed like “x4” for 4 lanes, “x8” for 8 lanes, and so on x1, x2, x4, x8, x16 PCIe Gen 3

pcie slot qrelease PCI Express X1 to X16 Low Profile Slot Extension Adapter - PCIe x1 to x16 Adapter - PCIe x1 to PCIe x16 slot adapter A x8 card will also work fine in a x16 slot But it will be limited to x8 speeds A x16 card will work in an x1 slot, but will be limited to x1