Can I plug DDR5 RAM into the DDR4 motherboard socket?

You will have to replace the motherboard, CPU and RAM all at the same time New mobos don't use DDR3, your current CPU will not fit in modern

Every DDR generation is different from the others DDR4 is not backward-compatible with DDR3 so a DDR4 DIMM will not fit on a DDR3 DIMM slot

can you put ddr3 in a ddr4 slot More tutorials: Let us present a how-to guide for DDR3 memory

can you put pcie 4x in 16x slot Your motherboard selection enables you to know how much RAM your computer system can use DDR4 or DDR3; Choose DDR4 for faster speeds and efficiency