The Patriot VIPER 8GB DDR3 2133MHZ CL11 PV38G213C1K DIMM GAMING RAM 240pin is a set of two 4GB memory modules designed for gaming. The UDIMM form factor and 240-pin configuration make it compatible with most desktop computers. With a bus speed of PC3-17000 (DDR3-2133), it delivers fast and reliable performance. The Patriot brand is known for producing high-quality computer components, and this DDR3 SDRAM is no exception.