16GB Kit 4x 4GB Modules PC2-5300 667MHz NON-ECC DDR2 DIMM Desktop 240-pin Memory RamThis DDR2 memory module is the perfect fit to upgrade your Desktop's RAM! Computer memory (RAM) is responsible for storing data that your device uses to allow you to surf the web, play games, run spreadsheet software, or anything else you do on a computer. If your computer is running slow, a memory upgrade may be just what you need.All of our memory is tested in-house by a dedicated quality assurance team. If you have any issues with your purchase, contact our customer service department and we'll get you taken care of!Technical Specifications: 4x 4GB DDR2 PC2-5300 DIMM memory modules. Desktop