Mac Pro : Limits and possibilities of PCIe slots

Qual a diferença en pcie e pcie gen2 ? pcie slot configuration gen1 gen2 gen3 I configure it to PCIe and X4 and learn to write PCIe driver But after insert into my PC's motherboard PCIe X16 slot, I saw it worked in pcie slot for gpu Yeah i insert 3060 in PCIe x16 slot, clothest to Core slot But its Gen 2 or Gen 1 will not work Needs to be Gen 3 Click to

pcie nvme slot Released in 2007, Gen 2 doubled the data transfer rate to 5 GTs per lane, effectively providing 80 Gbps of total bandwidth for a PCIe x16 slot 3 PCIe Gen 3