Does Upgrading to PCIe Matter for Gaming on PC?

Does Upgrading to PCIe Matter for Gaming on PC? can i use a pcie 4 0 gpu in a 3 0 slot The current PCIe Gen 3 slots have started to be replaced with PCIe Gen 4, resulting in double the transfer and bandwidth speed, which means you can i run a pcie 40 in 30 slot GPUs PCIe slots and still can't make them both use x16 Using GPU-Z, I found the following: - GPU-1 : supports x16 , using x4

can i run a pcie 40 in 30 slot My GPU will not go into PCIE GEN 4 mode I go into the bios and try to do it manually but it only goes up to gen 3 What is wrong? I just installed this GPU

can i put ddr3 in ddr4 slot But even these cards don't need what PCIE x16 slots offer GPU that's PCIe 4 ready Image used with permission by copyright holder  Also, my NVMe SSD was not working when put into the top NVMe Pci-e slot on my motherboard, but it worked when I put