Patriot Viper Xtreme series modules have a custom designed heatshield with a copper insert across the DRAM chips and a slim profile extruded anodized aluminum outer piece. This unique design offers enhanced thermal performance resulting in a 5% improvement in heat dissipation over aluminum based heatshields. Built from only using the highest quality pre-sorted IC's available, Viper Xtreme modules are rigorously tested and validated on multiple high-performance motherboards to ensure performance and reliability for overclocking. These modules are targeted and designed specifically for performance enthusiasts and overclockers looking for an edge in benchmark efforts and to push the boundaries of computing performance. Cas Latency: 8 Voltage: 1.65V Timing: 8-9-8-24 Recommend Use: High Performance or Gaming Memory ECC: No Buffered/Registered: Unbuffered Features: Extreme Performance PC3-12800 (1600MHz) Low Latency (8-9-8-24) XMP Ready Equipped with an extruded aluminum shield to provide improved cooling 100% Tested and Verified RoHS Compliant Tested on AMD 890 Series, Intel X58, P55 and P67 platforms Parts: Lifetime limited