V7 memory 4 gb dimm 240 pin ddr3 1333 mhz pc3 10600 cl9 unbuffered non ecc upgrading the memory in your desktop or notebook is one the most cost effective ways to boost performance memory upgrades are quick and easy to install adding extra memory ensures that the operating system and applications run faster and smoother and is essential for applications such as gaming hd video and image editing graphic design multi tasking and manipulating large amounts of data upgrading