The Be Quiet! Dark Rock 4 has a single tower heatsink design, and uses approximately 45 aluminum made fins and six copper heatpipes. The active airflow is done by a single 125mm Be Quiet! Silent Wings PWM fan.
The Dark Rock 4 has an all-black ceramic coating applied on all surfaces except for the base plate. The ceramic coating has been used with success with other coolers that are part of the Dark Rock product series.
The dimensions of the cooler & fan are: (L) 96 x (W) 136 x (H) 159mm
The heatsink has a single tower design and approximately 45 aluminum made fins. The top of the heatsink is covered by an aluminum made plate which also has a linear brushed texture. At the center of the top plate, a reflective Be Quiet! logo is applied, to enhance the design of the cooler.
The Dark Rock 4 uses six copper made heatipes, each with an outer diameter of 6mm. The heatpipes are making direct contact with the base of the cooler, and are also covered by a small heatsink on the top. The smaller heatsink is in fact an integral part of the mounting system used on the Dark Rock 4.
The base of the Dark Rock 4 is manufactured from the same type of nickel-plated copper, just like the heatpipes. The surface of the baseplate is smooth and has a reflective texture similar with that of a mirror. The baseplate, also has a radial brushed pattern left from the manufacturing process, this does not affect the evenness of the thermal compound spread.
The front side of the heatsink has two thin rubber strips applied on the entire length of the heatsink. These strips are used to not only dampen the vibration generated by the fan, but to also provide a good base for the fan to sit on.
The Dark Rock 4 uses a single 135mm fan which is part of the Silent Wings series. The fan has the model number BQ SIW3-12325-MF-PWM, and is often used on many Be Quiet! CPU coolers. The fan has a minimum speed of 500 RPM and a maximum speed of 1400 RPM.
The cable of the fan is covered by high quality plastic sleeving and the used connector for power is a standard 4 Pin PWM connector.