Hp z640 NVMe PCIe Crucial card on PCIe expansion car

Your PCIe card will run at the lowest generation present So if you put a PCIe card in a PCIe slot, you'll get PCIe performance

If you're confused about the benefits PCIe components offer over alternatives, we have the

pcie slot x16 It should be backward compatible, but you will see less performance than if you had it in a PCIe slot since it runs at PCIe x8 instead

pcie 20 x1 slot The PCIe specification is intended to increase data transfer rates from 8 GTs to 16 GTs , allowing SSDs, GPUs,