DMS EconoRAM modules are assembled with components commonly referred to as OEM components. OEM components are not full factory tested, and are sold in bulk to manufacturers at a discounted price. EconoRAM was introduced for the budget minded consumer, who still require the DMS assurance of quality and compatibility. Our EconoRam line is assembled with generic brand components that are tested in our own in-house test lab for quality assurance. DMS EconoRAM is only purchased from pre-qualified vendors. All EconoRAM carries a 1 year DMS warranty. If you compare DMS prices with comparable product, you will find we have the lowest price for the highest quality.