Wonder how effective a fan would be on the BPPC heatsink since the surface is flat.
It is not so easy to just replace the heatsink and put proper mini heatsink/fan on the PPC chip coz chips around it needs airflow. However depending on how you mount it (desktop/tower) you can probably find a custom solution.
I would just use a homemade mix of arctic silver with arctic silver glue (so you can easely remove heatsink in the future) and attach a 40mm heatsink/fan on top of the black heatsink.
