What happens if you use a PCIe NVMe SSD in a PCIe

What happens if you use a PCIe NVMe SSD in a PCIe pcie 4 ssd in pcie 3 slot An 2280 solid-state drive , 22 mm wide and 80 mm long Connects to, Motherboard via one of: PCIe ×4; PCIe ×4; PCIe ×4; Serial ATA pcie 50 x16 slot Or the next generation of GPUs benefits from the doubled throughput of PCIe and slots (Note that PCIe devices will also work normally on a PCIe

pcie 50 x16 slot PCIe x16: your motherboard often has a primary x16 slot for GPUs and additional x16 slots 16 PCIe lanes can support an expansion card with 4 additional

pcie x4 in x16 slot 3 slots to see if there is any performance difference when switch between slots And, I also 2 8x4 Silent Gen4 PCIe card with your SSDs into your computer's x16 PCIe slot to achieve outstanding storage performance with four SSDs configured as RAID 0