The product is a set of 4 Nanya DDR3 RAM modules with a total capacity of 8GB. Each module has a capacity of 2GB, making it an ideal choice for upgrading your computer's memory. The modules are designed in a DIMM form factor and operate at a bus speed of PC3-10600 (DDR3-1333). With these modules, you can expect improved performance and faster data transfer speeds when running multiple applications simultaneously.