Thermaltake''s new Pacific W1 CPU Water Block delivers extreme cooling performance and compatibility for custom PC builders. Featuring 0.15mm internal fin construction, the Pacific W1 is manufactured with a full copper base and anti-corrosive nickel plating. A universal mounting mechanism offer error-free as well as no-tools installation, providing the ultimate in cooling performance.Tt LCS Certified is a Thermaltake exclusive certification applied only to LCS products that meet the design standards of hardcore enthusiasts. The Tt LCS certification was created so that we at Thermaltake can guide power users to chassis products that have been tested to be most compatible with extreme liquid cooling configurations to ensure the best performance, features, and fit.Anti-corrosion DesignMade in Taiwan, the Pacific W1 Water Block''s specially machined copper base with nickel coating prevents corrosion and fully complies with Thermaltake''s highest quality standards. The mating surface to the CPU sports an absolute mirror polish. In combination, these features provide exceptional heat transfer and anti-corrosion protection for the most demanding use conditions.Optimized Micro-channel StructureThe Pacific W1 Water Block is designed with a compact form factor featuring 0.15mm micro-channel fin construction for optimal clearance and extreme heat dissipation. A silicone rod guides coolant through the bottom of each micro-channel.No-Fuss ExpansionDesigned to fit all modern CPU sockets with universal mounting mechanisms, the Pacific W1 allows enthusiasts to build superior water cooling systems from an aesthetic standpoint as well as incorporate modular chassis upgrades for the future.