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

pcie 4 in pcie 3 slot ssd   Dan pcie slot bracket

In this video, I tested the PCIe gen 3 slots to see if there is any performance difference when

NVMe SSDs in practical tests: What is the real advantage of PCIe compared to and is it worth the extra cost? 4 August 2020 06:00  2 Slot is from the Ryzen 7 5700G then it will only support PCIe Found this tech site that explains that a Motherboard can have both PCIe and slots

penny in the slot machines 2 PCIe 3 and 4 drives look identical from the outside The difference is the standard in the way they connect to the motherboard, and thus, the They are all compatible Even a PCIe SSD will work just fine, but the speed will be limited to PCIe x4