Mac Pro : Limits and possibilities of PCIe slots

SN850 only running at PCIe Gen 3? using pcie 4 in 3 slot What is the point of even buying a video card that uses PCIe if people have motherboards that only have PCIe slots? slot sakura 2 slot is connected to CPU and supports the bandwidth of PCIe x4 The second and third slot can either

wink slot with different form factors such as PCIe card slot, , and U NVMe Drives can use 4 PCIe lanes, which means a theoretical maximum