This G.SKILL memory kit includes two 2 GB DDR3 SDRAM DIMMs with a total of 4 GB capacity. The modules have a bus speed of PC3-12800 (DDR3-1600) and are suitable for use in desktop computers. The brand G.SKILL is well-known for producing high-quality computer components, so you can trust that this memory kit will provide reliable performance. The memory modules are compatible with various computer motherboards that support DDR3 SDRAM.