( There is 2 box's 3 ram per box)The KINGSTON KVR1333D3E9SK3/6G is a 6GB memory module with a capacity per module of 2GB. It is a registered DDR3 SDRAM designed for desktop computers. This UDIMM module has a bus speed of PC3-10600 (DDR3-1333) and a total of 3 units included in the package. Manufactured by Kingston, a reputable brand in the industry, this memory module is reliable and efficient for improving the performance of your system. With a form factor of UDIMM and 240 pins, this memory module is a solid choice for upgrading your computer's memory capacity.