Overclockers Club published a review on the be quiet! Dark Rock 3
A quote from the article:
The be quiet! Dark Rock 3 has several improvements over the previous design, such as improved dynamic wave-contour cooling fins with enhanced cooling area, small dimples on the surface to increase air circulation, six high-performance heat pipes with copper lining and aluminum caps, 190W TDP, and a new arrangement of heat pipes to enhance the cooling capacity. The included single PWM fan quietly gets the job done at stock settings, and even keeps the heat under control with a mild overclock. The diamond-cut aluminum top cap covers the heat pipe stubs, so if you have a case with a side panel window, you can proudly show off the Dark Rock 3.be quiet! Dark Rock 3 Review @ OCC