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The Viper Series 4GB DDR3 PC3-12800 1600 MHz SODIMM Memory Module from Patriot is designed to provide faster system response times in mobile computing environments. The module offers plug-and-play speed of up to 1600 MHz at 9-9-9-24 timings, operates at a voltage of 1.35V, and is XMP 1.3 ready. It is compatible with 3rd and 4th generation Intel Core i5 and i7 processors.