What is the difference between PCIe GEN ⛑️

What is the difference between PCIe GEN ⛑️ pcie slot configuration gen1 gen2 gen3 PCIe Gen 3 was unable to accommodate the full bandwidth of high-speed PCIe NVMe SSDs This was effectively creating a bottleneck in SSD performance PCIe Gen 4 pcie slot qrelease The PCIe Slots are usually numbered from 1 to 16, and will be designated by a PCIe x1, x4, x8, or x16 label Remember that these labels refer to

pcie slot qrelease There's a setting to choose pci-e version as in gen1, gen2 or gen3; but I don't see a setting to change speed unfortunately

pcie slot configuration gen1 gen2 gen3 including GTs and GTs through PCIe 8 GTs and Provides signal capture in situations where no PCIe slot connector or PCIe  PCIe supports PCIe Gen 1, PCIe Gen 2, and PCIe Gen 3 devices PCIe With options for 1x, 2x, 4x, 8x, and 16x slot configurations