Patriot Signature Line 8GB No Heatsink (1 x 8GB) DDR4 2666MHz DIMM System Memory Signature Line DDR4 8GB 2666MHz (PC4-21300) UDIMM Patriots Signature Line DDR4 Non-ECC unbuffered memory delivers the quality, reliability and performance expected for todays mainstream computer needs. This 8GB is designed to run at PC4-21300 (2666MHz) at CAS 19 latency timings for better overall system responsiveness when using demanding application. 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, Patriots Signature Line DDR4 memory modules are the perfect option for any PC system build or upgrade for faster performance. Memory Capacity 8GB (1 x 8GB) Memory Type DDR4 Module Type DIMM Memory Speed DDR4-2666MHz Pin Configuration 288-pin Registered/Unbuffered Unbuffered Error Correction Non-ECC CL-tRCD-tRP-tRAS 19-19-19-43 Heat Sink No Working Voltage 1.2V