A system includes a circuit board, a multi-die package, and a heat dissipator. The circuit board has substantially planar opposing first and second sides. The multi-die package includes a substrate and a first set of one or more semiconductor devices on a first substrate side and a second set of one or more semiconductor devices on a second substrate side. The multi-die package is located at the first circuit board side. The heat dissipator is located at the second circuit board side, and thermally coupled to the second set of semiconductor devices. One or more portions of the circuit board are removed between the first circuit board side and the second circuit board side so as to define one or more holes through the circuit board and to facilitate thermal coupling between the second set of semiconductor devices and the heat dissipator through the one or more holes.