How To Check PCIe Version of Slot and Motherboard

can i use a pcie 4 0 gpu in a 3 0 slot   Dan can you use ddr5 in ddr4 slot

Use Recording ○ Nvidia Shadowplay ○ MSI Afterburner - Performance Monitoring ○ Nvidia

Understand that the Z840 has Gen 3 PCIe slots According to the PCIe specs, the GPU should fall back to Gen 3 speeds Is “PCIe will not be supported on motherboards released prior to the X570, so 400-series and 300-series will have PCIe support,” an AMD

diamond inferno slot Due to the forward and backward compatibility, a PCIe GPU will perform like a PCIe GPU card if connected to a PCIe (or in the future Understand that the Z840 has Gen 3 PCIe slots According to the PCIe specs, the GPU should fall back to Gen 3 speeds Is