PCIe Gen4 NVMe on PCIe 3 0 - Performance impact

2 slot directly below the CPU support the faster gen 4 NVMe cards? I'm assuming the second is gen 3 Specs say the

PCIe was released in 2011 that surpasses the older generations of PCIe It's both backward and forward compatible with newer or older

nvme in pcie slot A PCIe NVMe SSD will work in a PCIe motherboard slot at PCIe speeds PCI-Express versions are

nvme slot A PCIe SSD card can be inserted into a motherboard having PCIe slots, but the SSD will not be able to make use of the greater bandwidth