With the technology, Samsung's productivity could increase by about 60 percent compared to the 50-nanometer technology it is currently using. In addition, 40-nanometer DRAM could reduce electricity usage by over 30 percent, compared to the 50-nanometer DRAM.
Samsung also said the migration to 40nm class process technology is expected to accelerate the time-to-market cycle by 50% -- to just one year.
The company plans to apply its 40nm class technology to also develop a 2Gb DDR3 device for mass production by the end of 2009.
Samsung developed the industry's first 60-nanometer DRAM in 2005, and 50-nanometer DRAM in 2006. The world's top memory chip maker said that its foreign rivals, which still use 50-60 nanometer technology, "will likely remain about one or two years behind in terms of manufacturing competitiveness."