Patriot Memory?s Viper 4 Series memory modules are designed with true performance in mind. The Viper 4 series provides great performance and stability for the most demanding computer environments. The Viper 4 series utilizes a custom designed high-performance heat shield for superior heat dissipation to ensure rock solid performance. Built from the high quality materials, Patriot Memory?s Viper 4 Series memory modules are validated for system compatibility.