DDR5 Double Data Rate 5
Fifth-generation DDR RAM — double the bandwidth of DDR4, on-die ECC, lower voltage.
JEDEC spec released in 2020. Started at 4800 MT/s, consumer modules now hit 8400+ MT/s. Split channels: each DIMM is two 32-bit channels instead of one 64-bit. On-die ECC fixes bit-flips inside the chip (but isn't the same as "full ECC" for servers). Requires a new motherboard — not backwards-compatible with DDR4 sockets.