Certified Apple HyperVelocity 64GB Mac Pro 4X 16GB DDR3-1866 ECC Unbuffered DIMM RAM Memory Kit . . . 4 Pieces 16GB 240 pin 1.5v PC3-14900 1866MHz ECC Registered RDIMMs for Late 2013/2014 2.7GHz 3.0GHz 3.5GHz & 3.7GHz MacPro6,1 MD878LL/A , ME253LL/A A1481 (EMC 2630) models . . . Mac RAM Direct is a Tier One Supplier to NASA and these are the exact same parts we supply to NASA's Mac Pros! . . . Lifetime Warranty vs Apple's 1 year

Mac RAM Direct is a Tier One manufacturer and supplier of Premium RAM memory products to the Apple community around the world. We are a government certified ISO 9001:2000 memory producer as well as a Registered Apple Developer. We supply Government agencies, Universities, Graphics, Audio and Video Professionals in 32 counties. We offer Mac users our premium HyperVelocity high performance memory modules as well as the Apple original OEM Samsung, Nanya and Hynix components for users that only want Apple exact parts. As an industry leader for the past 12 years we have learned that above all else, quality is the key to growth and success. All Mac Ram Direct parts are extensively tested before shipping out and combined with our Full Lifetime Replacement Warranty we deliver the peace of mind users need. Our typical user base consists of industry professionals that demand the ultimate performance from their machines ... with zero down-time. Time is money and the higher performing a machine is, the faster the work is dispatched. Speed, Power and Reliability... that is what we at Mac RAM Direct offer... NASA, The Jet Propulsion Laboratory, United States Navy, CBS, Univision, The Smithsonian Institute, National Geographic, UCLA, CSPAN plus thousands upon thousands of graphics, audio and video professionals globally trust Mac Ram Direct HyperVelocity and Apple OEM factory original memory components in their machines... performing the highest level, mission critical tasks in the world today. We hope to help you perform your mission critical tasks as well.