Corsair Hydro Series liquid CPU coolers provide a compact, easy-to-install, and maintenance free alternative to bulky, noisy air coolers, efficiently cooling and protecting your high-performance Intel or AMD CPU. The H40 features a completely closed loop system that never needs to be maintained, leaving you with years of worry free operation. Closed Loop, Maintenance Free Unlike traditional liquid cooling, the Hydro Series H40 CPU cooler is a completely closed loop system, requiring no maintenance. You get the benefits of liquid cooling - compact size, quieter operation - without the hassle of filling the radiator or the worry over leaky connectors.Small but powerful Despite its small footprint, the H40 can exceed the cooling performance of typical air coolers more than twice its size. The H40 installs easily in almost any case with a 120mm fan mount, and occupies less space in your system, leaving room for your other components.Modern CPU support Whether you use the latest Intel or AMD processor, the H40 has you covered. With support for Intel LGA 775, 115x, or 1366, as well as AMD AM2, AM3, and FM1 sockets, the H40 is compatible with virtually all of today"s high performance platforms.