There are a total of 49 aluminum plates on the heat pipes. An aluminum casing covers their sides and top.

This helps utilize the air stream from the fan in the most efficient way.

There is another small aluminum heatsink in the bottom part of the cooler, right above the copper base and the heat pipes.

The cooler’s fan is secured on the aluminum frame with four screws; the frame itself is fastened to the bottom heatsink.

There are no rubber pads between the aluminum frame and the fan, but I think they would help reduce noise and vibration (the maximum fan speed is 2500rpm after all).