Hardware Unboxed on X: Just to clarify DDR5 is not backwards

DDR4 DIMMs have a 72-bit bus, comprised of 64 data bits plus eight ECC bits With DDR5, each DIMM will have two channels Each of these channels

To be clear, DDR5 is not backward compatible with DDR4 because it uses a different DIMM slot DDR4 and DDR5 Alder Lake motherboards will be

ddr5 slot The problem is that DDR5 RAM is NOT compatible with DDR4 DDR4 RAM Won't Fit Into DDR5 Slots and Vice Versa

ddr5 in ddr4 slot Is it possible to upgrade your older DDR4 laptop to use DDR5 memory? No DDR4 and DDR5 SODIMM memory sticks are not interchangeable