Zalman Copper Heat Pipe CPU CoolerZalman CNPS9700NT Copper Heat Pipe CPU Cooler - NVIDIA Green LED 110mmFan. A top notch high end cooler that outperforms all other air-cooled CPU coolers as well as someinternal water-cooling systems, while maintainingZalman"s renowned reputation for ultra quiet fanoperation. The primary innovation lies in the patented "figure 8" shape bending of its three heat pipes to produce results equivalent to six heat pipes.