Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot?

2 slots I'm looking to add 2 pcie gen 4 nvme SSDs I assume one drive will use one of the x16 lanes And the graphics card

BUT you go buy the off brand no name cheaper 1TB Gen 4 NVME for lets say, 70$ (6-7K read

nvme vs m2 slot As mentioned above, a single PCIe slot can have x1, x2, x4, x8, or x16 lanes For example, PCIe x8 refers to a Gen 4 expansion cardslot

nvme in pcie slot 5+3 Phases Pure Digital VRM Solution with Low RDS MOSFETs 9 Supports 3rd Gen AMD Ryzen™ Processors 10 Dual Channel DDR4, 4 DIMMs 11 Dual