Powercolor has announced the new fan design that were developed in cooperation with its thermal partner, the Double Blades. Based upon an additional fan blade attached to original one, the new Double Blades design will provide much higher airflow and bring some other interesting features as well.
The new design adds an extra fan blade that is actually attached to the original one and can absorb airflow into the center thus providing up to 20 percent more airflow when compared to the traditional and existing thermal designs. The new design also prevents the dust depositing at the bearings and/or at the bottom of the fan and prolonging the life cycle of the cooler as well as the graphics card.
According to Powercolor/TuL, the new Double Blades design will be implemented in future graphics card coolers and out best bet are the first custom cooled Volcanic Islands based graphics cards.
Source:
Powercolor.com.