Specs: 4X70Z78727 16GB 288-Pin DDR4-2933 PC4-23400 UDIMM RAM Memory DDR4 ECR* Made from the highest quality components, Arch Memory RAM modules are designed to increase productivity and help your computer work faster. Arch Memory products are engineered to meet industry standard specifications and rigorously tested to ensure quality. Backed by free technical support, a lifetime replacement warranty and legendary reliability, Arch Memory RAM is your best choice for upgrading your computer's memory. 30 Day money back guarantee. Limited lifetime warranty.