Go to the original link: https://www.kingston.com/en/blog/pc-performance/pcie-gen-4-explained
What is the difference between PCIe Gen 3 and PCIe Gen 4? – Kingston Technology
PCIe Gen 4 is the latest and fastest PCIe standard available on motherboards and compatible CPUs. PCIe Gen 4 cards can accommodate the full bandwidth that is possible with NVMe SSDs technology.
We read in kingston.com