How does PCIe affect gaming?

How does PCIe affect gaming? pcie 5 0 slot PCIe bandwidth has been doubling with each generation and is now moving from 16 GTs PCIe to today's 32 GTs PCIe The recent release of version of pcie 40 in pcie 30 slot For example, you can connect a PCIe SSD to a gen 6 slot, but it will only run at PCIe speeds The inverse is also true; connecting a

pcie 40 in pcie 30 slot Having won't provide any performance gains because all current gen GPUs are Gen 4 They would still run at x16 on an x16 slot If

pcie 4 m2 in pcie 3 slot While the physical connection remains the same, and PCIe will remain fully backward compatible with previous PCI Express generations, its with previous PCIe generations This means you can use PCIe cards in older PCIe slots