The 2Gb (gigabit) DDR3 (double data rate, third generation) chips consume 30 percent less power than chips made using 50nm production technology and can be made at more than double the cost-efficiency, Samsung said. The company has 2Gb DDR3 for laptops, desktops and servers that use just 1.5-volts or 1.35-volts of power.

DDR3 will likely take over as the world's mainstream DRAM chip from its predecessor, DDR2 (DDR, second generation) this quarter due to its lower power consumption and speedier performance, according to DRAMeXchange Technology, which runs an online clearinghouse for memory chips. PC vendors are aggressively moving to use the chips in laptops and servers.

The use of tiny 30nm production technology puts Samsung ahead of rival DRAM makers. The company said its 30nm DDR3 chips will be in mass production in the second half of this year, and it plans to expand use of the new technology to most memory chip production lines by the end of 2010.

One of the few companies ahead of Samsung, IM Flash Technologies, a joint venture of Intel and Micron Technology, is using 25nm technology to make flash memory chips. The company does not make DRAM.

The nanometer measurement describes the microscopic size of transistors and other parts on a chip. A nanometer is a billionth of a meter, about the size of a few atoms combined.