The SK Hynix SO-DIMM DDR3 matching set consists of two 4GB modules, totaling 8GB of memory capacity. These DDR3 SDRAM modules have a bus speed of PC3-12800 (DDR3-1600) and are designed for easy installation in computers that require SO-DIMM memory modules. With 204 pins, these SK hynix memory modules are reliable and high-quality components for enhancing the performance of your computer system. This set of memory modules is a practical choice for upgrading or replacing existing memory modules in your computer.