Patriot's Low Profile Viper 3 Series memory kits are designed with true performance in mind. Tested & qualified with Intel's & AMD's DDR3 compatible processors & chipsets, The Viper 3 Low Profile Series provides the best performance & stability for the most demanding computer environments. The Viper 3 Low Profile series utilizes a custom designed high performance low profile heat shield for superior heat dissipation to ensure rock solid performance even when using the most taxing applications. These low profile modules provide superior cooling while offering excellent clearance for large CPU coolers, making them perfect for overclockers & gamers. Built from the highest quality Build of Materials, Patriot's Viper 3 Low Profile Series memory kits are hand tested & validated for system compatibility. Available in dual & quad channel kits, 8GB, 16GB & 32GB Kits, the Viper 3 Series modules are offered at speeds from 1600 M Hz up to 2133 M Hz at 1.5 volts & are XMP 1.3 ready. Hand tested for quality assurance, the Viper 3 series Low Profile Series is backed by a lifetime warranty. Series: Viper 3 Edition: Black Low Profile Capacity: 16GB (2 x 8GB) DIMM Type: 240-Pin NON-ECC UDIMM Voltage: 1.5V Tested Frequency: PC3-17000 (2133 M Hz) Tested Timing: 11-11-11-30 Base Frequency: PC3-12800 (1600 M Hz) Base Timings: 9-9-9-24 Feature Overclock: XMP 1.3