How fast is PCIe NVMe vs PCIe

PCIe 4 NVMe drive in a PCIe 3 slot m2 pcie 4 0 in 3 0 slot For our lines of high-speed PCIe® NVMe® SSDs, the Crucial System Scanner and Crucial System Advisor will list all 1 GBs 2 GBs 4 GBs m2 sata slot SSD: Kingston FURY Renegade PCIe NVMe SSD Windows ISO: Downloaded from

m2_1 slot I had an Asus HYPER X16 GEN 4 CARD for 4 Nvme but it's OK for only one slot I should change to x4x4x4x4 in my bios Another idea was to