Samsung has started mass-producing 1 Gb DDR (double data rate 2) DRAM memory chips using an advanced manufacturing process that allows it to make the chips smaller and at less cost.

The chips, manufactured using an 80 nanometre process, will be 36 per cent smaller than their predecessors, which were produced using a 90-nanometre technology, the company said today.

The figure refers to the size of the smallest feature on the chip. Smaller features mean a greater number of chips can be produced from a silicon wafer, lowering production costs.

Most 1Gb DRAM chips today are stacked in high-capacity modules for high-end servers. Thirty-six 1Gb DRAM chips are used for each 4GB module.

All of Samsung's DDR2 chips are now manufactured using an 80-nm process. It's been mass-producing 512Mb chips using an 80-nm process since March, it said.