EXDISPLAY Patriot Signature Premium DDR4 16GB (2x8GB) 2666MHz (PC4-21300) UDIMM kit W/HEATSHIELD Patriot Signature Line Premium Capacity: 16GB (2x8GB) Kit Frequency: 2666MHz (PC4-21300); Timings: 19-19-19-43; Voltage: 1. 2V Form Factor: 288-Pin Unbuffered Dual In-Line Memory Module (UDIMM) Technology: DDR 4 Non-ECC Unbuffered Aluminum Heatshield; Ro HS Compliant; Limited lifetime warranty Patriot\'s Signature Premium DDR4 Non-ECC unbuffered memory delivers the quality, reliability and performance expected for today\'s mainstream computer needs. Built using the highest quality components and hand tested, Patriot ensures every module meets and exceeds industry standards to offer you a hassle-free plug-and-play memory upgrade. With free customer service and a lifetime warranty, Patriot\'s Signature Premium DDR4 memory modules are the perfect option for any PC system build or upgrade for faster performance.