The Patriot Viper PV38G160C9K DDR3-1600 8GB RAM kit includes 2 modules, each with a capacity of 4GB. These DIMM modules are designed for server use and have a total capacity of 8GB. With a bus speed of PC3-12800 (DDR3-1600), these modules are suitable for high-performance computing environments. The Viper brand is known for quality memory products, making this RAM a reliable choice for enterprise networking and server applications.