The spirit of the japanese sword inspired the naming of our famous CPU Cooler Katana. Well known for its' reliability and its tilted fin structure Katana 4, just like the japanese sword, looks back on a long tradition. The 4th. generation stands out with its new, modern design combining key features of previous versions with design and efficiency improvements. The low height as well as the structure of the fins and the use of three heatpipes are adopted from its' predecessors. In addition, the new design lays the foundation for higher cooling performance by providing larger cooling surface and the possibility to mount a second fan. The Katana 4 is equipped with a 92 mm Slip Stream fan operated by the PWM signal of the mainboard, circulating at 300 to 2500 rpm. This combination enables virtually silent mode as well as overclocking, by providing sufficient cooling ressources for almost all environments. The Katana 4 is compatible with all current sockets.