you can already have 128gb per DIMM with DDR4. not sure if its up to spec, but it works usually. 128gb dimms are more than double the price of 64gb dimms, so i

you can already have 128gb per DIMM with DDR4. not sure if its up to spec, but it works usually. 128gb dimms are more than double the price of 64gb dimms, so it not always economically viable unless you need max memory density.