PCIe vs PCIe GeForce RTX 3060 12GB

What is the difference between PCIe Gen 3 and PCIe Gen 4? pcie 4 0 in 3 0 slot First we need to identify at which PCIe slot the device is attached $ lspci grep -i nvme 08: Non-Volatile memory controller: Samsung pciex1_1 slot PCI-E ) when fitted into the top PCI-E x16 slot I've tested with 3 motherboards, 3 power supplies, 3 sets of RAM, 2 display cables (DP

pcie 40 gpu in 30 slot IBP-G4X16-3 Backplane PCIe Gen 4 Expansion 3 slot backplane 3 Slot x16 Gen4 PCI Express Backplane