Patriot's Signature Line DDR3 Non-ECC unbuffered memory delivers the quality reliability & performance expected for today's mainstream computer needs This 4GB is designed to run at PC3-12800 (1600 M Hz) at CAS 11 latency timings for better overall system responsiveness when using demanding applications 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 DDR3 memory modules are the perfect option for any PC system build or upgrade for faster performance Memory Capacity 4GB (1 x 4GB) Memory Type DDR3 Module Type DIMM Memory Speed DDR3-1600 M Hz Pin Configuration 240-pin Registered Unbuffered Unbuffered Error Correction Non-ECC CL-t RCD-t RP-t RAS CL11-11-1128 Heat Sink No Working Voltage 15V