PCIe x16 GPU card into a PCIe x8 slot?

Understanding the use of PCI-E lanes with my CPU pci e x16 slot if the slot is open like that, you should be good to go if it's not open, you could a) use another riser to adapt the x8 to x16, or b) pcie m2 slot A x8 card will work in an x1 slot, but will be limited to x1 speeds A x8 card will also work fine in a x4 slot It will be limited to x4 speeds

pcie4 slot Install a PCI Express x16 Card into a PCI Express x1 slot, in a 1U chassis · Designed to fit most 1U server chassis' · Complete pass through design supports the