Systems, methodologies, methods of manufacture, and other embodiments associated with semiconductor/processor module assemblies are described. One exemplary system embodiment includes a bolster plate assembly for a semiconductor module assembly that includes a bolster plate and a leaf spring pre-loaded onto the bolster plate. The example system may also include the leaf spring being releasably attached to the bolster plate and positioned to provide a force in a direction generally away from the bolster plate. The leaf spring can be configured to release from the bolster plate upon attaching the semiconductor module assembly to the bolster plate that causes the leaf spring to exert the force in the direction generally away from the bolster plate and against a semiconductor module assembly.