Thermal coupling with between an electrical component, such as a CPU, and a heatsink can be provided by a movable heatsink insert separate from the heatsink. This movable heatsink insert can be placed on the electrical component. The heatsink can be thermally coupled to that additional thermal conductor. The heatsink, which is attached to the printed circuit board, is not in direct contact with the electrical component, reducing the likelihood that the heatsink could cause bending of the printed circuit board by pressing down on the electrical component. Further, a spring coupled between the heatsink and the movable heatsink insert can provide further pressure relief such that the heatsink assembly can be attached to an electrical component without applying excessive force to the electrical component.