The product is a set of 16GB of G. SKILL DDR3 RAM, consisting of 8GB modules (2x4GB). It has a total capacity of 16GB and is designed for high performance with a bus speed of PC3-12800 (DDR3-1600). The memory modules are DIMM form factor, have 240 pins, and come with a lifetime manufacturer warranty. Made in Taiwan, these DDR3 SDRAM modules are ideal for enhancing the speed and efficiency of your computer system.