With the SODIMM 40nm-Class DDR3 module from Samsung, you can get faster speed and greater reliability from your computer while consuming less energy. Use Samsung SODIMM DDR3 memory to replace or increase the memory in your laptop. Samsung DDR3 employs 40-nanometer technology and, as a result, uses up to 47 percent less power and is only two-thirds the size of conventional 60-nanometer memory modules. This version of Samsung DDR3 contains 2 SODIMM modules, each with a capacity of 2GB.