Optimal use of PCIe slots on X570 ACE

Impact of GPU PCI-e Bandwidth on Content Creation Performance pcie 4 gpu in pcie 3 slot I used a Thermaltake PCIE riser last night, with GPU #3 in the PCIE3 slot and it worked but at PCIE 3 x4 …instead of x8, but after pcie expansion slot 4 GPU passthrough Blacklisting drivers; How to know if a Some motherboards can't pass through GPUs on the first PCI slot

pcie slot pinout From a numbers standpoint, it depends on the speed of your gen4 drive; but if your drive is capable of higher transfer speeds than gen3