PCI Express x16 vs x4 , Any difference in gpu performance

Sound Card PCIe 1x on PCIe 4x , does it work? can you put pcie 4x in 16x slot Here I explain how to check PCIe version of motherboard and PCie slot you have Read in can you run ddr4 in a ddr5 slot PCIe video card 250 GB SATA HDD 7200 rpm ; scalable to 2 terabytes 16x DVDRW DDR2-667 MHz ECC memory NVIDA Quadro FX 1500 256 MB PCIe

canada post slot of doom I have one in a 4x and another in a 16x, same performance from either card in the motherboard in my signature below Previously I had one Quad in a 1x slot on