Thermal compound is necessary to create a reliable transfer of heat from your computer's processor to its heatsink to keep your CPU from overheating. Arctic Silver Ceramique Thermal Compound uses a high-density layered composite of five unique shapes of thermally conductive aluminum oxide, boron nitride and zinc oxide sub-micron particles to maximize particle-to-particle contact area and thermal transfer. Arctic Silver claims that this unique blend provides heat-transfer performance exceeding most metal-based compounds. This 2.5-gram tube will cover approximately 20 square inches, at a layer of 0.003-inches thick.

Note: This is an OEM (Original Equipment Manufacturer) version, which includes the product, but nothing else. They are packaged generically and are best suited for system builders who don't require documentation or bundled accessories.