Samsung Electronics has finally put to good use its 4Gb low-power memory chips – the ones they had announced earlier this year – and begun shipments of their high-density 32GB DDR3 registered DIMMs.The modules are built on Samsung’s own 50nm process, operate at 1.35V – slightly lower than the standard 1.5V – and the company hopes it’ll meet the demand for less power-hungry hardware that currently drives the industry.According to the company the 4Gb DDR3 modules improve throughput by about 20 percent over a regular