A new 8GB DIMM module has about 1/4 the silicon area of a new 32GB module and the same density (often 1/4 the number of identical chips); only an old 8GB module

A new 8GB DIMM module has about 1/4 the silicon area of a new 32GB module and the same density (often 1/4 the number of identical chips); only an old 8GB module, made with an entirely different process, would have larger and less dense safer DRAM cells.