8GB Module ( 1x 8GB ) DDR4 2666 MHz 288-pin UDIMM, CAS Latency 19, VDD and VDDQ=1.2V Energy efficient: saves 20% power compared to DDR3 Utilizes high-quality DRAM chips from the Microns original manufacturer to ensure outstanding stability and high-speed performance. All memory modules undergo rigorous quality control. UD138 comes with a limited lifetime warranty, offering consumers comprehensive warranty services.