The CORSAIR DOMINATOR 8GB DDR3 1600 RAM kit includes two 4GB modules of DDR3 SDRAM memory. With a total capacity of 8GB and a bus speed of PC3-12800 (DDR3-1600), this memory is designed for high performance in computer systems. The DIMM form factor ensures that it is compatible with standard memory slots, making it a reliable and efficient choice for enhancing the speed and multitasking capabilities of your computer. With the trusted Corsair brand behind it, this RAM kit is known for its quality and stability in delivering fast and seamless performance.