The G.Skill 4 GB DIMM 1066 MHz PC3-8500 DDR3 SDRAM Memory module is a high-quality RAM designed for computer enthusiasts. With a total capacity of 4 GB split into four modules, each with a capacity of 4 GB, this memory module offers fast data transfer rates at 1066 MHz. The DIMM form factor and DDR3 SDRAM type make it compatible with a wide range of systems. Backed by a lifetime manufacturer warranty, this G.Skill Ripjaws module is a reliable choice for upgrading your computer's memory capacity.