The SK Hynix 80GB 1600MHz DDR3 RAM Kit consists of 20 modules, each with a capacity of 4GB. These SO-DIMM modules have a total capacity of 80GB and a bus speed of Pc3-12800 (DDR3-1600). Made in China, this RAM kit is designed for high performance and reliability in computer systems that require quick and efficient memory access. Ideal for upgrading or replacing existing memory modules, this SK Hynix RAM kit offers a seamless and efficient computing experience for users needing increased storage capacity.