The Samsung 16GB (2 x 8GB) PC4-25600 (DDR4-3200) Memory kit includes two modules of DDR4 SDRAM memory, each with a capacity of 8GB. These UDIMM modules have a total capacity of 16GB and are designed for high performance with a bus speed of PC4-25600 (DDR4-3200). Manufactured by Samsung in the United States, these memory modules are ideal for boosting the memory capacity and speed of computers requiring non-ECC unbuffered memory technology.