The Crucial difference As a brand of Micron one of the largest memory manufacturers in the world we manufacture our memory in-house to meet three key criteria Quality All Crucial DRAM is classified as premium-quality & is extensively tested for performance & OEM compatibility before during & after the production process. Compatibility With memory designed for over 50000 systems & with products that range from energy-efficient DDR3L modules to legacy DDR offerings we have one of the most complete portfolios in the industry. Selection Backed by one of the industrys most in-depth quality test programs thirty years of manufacturing expertise & a limited lifetime warranty our modules are built to last..