NVMe SSD TO PCIE X1 4X adapter M Key interface card

In this video, I tested the PCIe gen 3 slots to see if there is any performance difference when

Two types of PCIe slot on an Asus H81M-K motherboard Various slots on a computer motherboard, from top to bottom: PCI Express x4; PCI Express x16; PCI Express

nvme m2 slot NVMe in the other CPU x16 slot, instead of the chipset linked slot NVMe drives won't get anywhere near bandwidth limits of PCIe

nvme and m2 slot difference NVMe 3hNqZMd Seagate Firecuda 520 1TB NVME https: