Patriot’s Signature Line DDR4 Non-ECC unbuffered memory delivers the quality, reliability & performance expected for today’s mainstream computer needs. This 8GB is designed to run at PC4-21300 (2666 M Hz) at CAS 19 latency timings for better overall system responsiveness when using demanding application. Built using the highest quality components & hand tested, Patriot ensures every module meets & exceeds industry standards to offer you a hassle-free plug-&-play memory upgrade. With free customer service & a lifetime warranty, Patriot’s Signature Line DDR4 memory modules are the perfect option for any PC system build or upgrade for faster performance.