oh in that case

no leave the heatsinks on, i seemed to remember stephan saying that you will lose 5-10 °C but you will destroy your ram if you try to remove the heatsinks.
im gonna be fitting some to my corsair ram & will deffo leave the heatsinks on, as imo the ramplex is not really a performance mod, its more just for the bling factor. you could get the same or even better performance just buy having a well vented case and decent airflow. but it want look as sexy