PCIe NVMe SSD on PCIe slot-Worth it?

What is the Difference Between PCIe Gen 3 & Gen 4? pcie 3 slot PCIe x8 Gen expansion backplane with one PCIe slot The PCIe x8 Gen3 backplane supports a PCIe Gen3 target cable adapter installed in the OSS pcie slot height PCIe slot you plan to slot it in Below are the speeds of potential M Expansion Card - 3 SIIG SC-M20014-S1

pcie m2 slot Sometimes, a PCIe slot operates with fewer data lanes than the mechanical slot-type indicates Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x8