This picture was taken by using a DRAM chip as an image sensor (translated). A decapped 64k DRAM chip was combined with optics that could focus an image onto the die. By reading data out of the ...

High Bandwidth Memory (HBM) is a high-performance 3D-stacked DRAM. It is a technology which stacks up DRAM chips (memory die) vertically on a high speed logic layer which are connected by vertical ...