Patriot Memory's Signature Line ECC Registered memory delivers quality, reliability and performance necessary for today's server needs. These 8GB modules are designed to run at 2133MHz at CAS 15 latency timings. Built using specific build-of-materials (BOMs) you can rest assured that every piece of server memory is of the highest quality. We certify every component that goes into our modules, including the modules themselves, which must pass strict standards to ensure compatibility, quality and reliability. And with free customer service and a lifetime warranty, Patriot Memory's server memory reduces your total cost of ownership.