An apparatus includes an integrated circuit package and a heatsink. The integrated circuit package includes a substrate, an integrated circuit, a first plurality of signal conductors, and a second plurality of signal conductors. The substrate includes a first surface and a second surface opposite the first surface. The integrated circuit is coupled to the first surface of the substrate. The first plurality of signal conductors are arranged along a periphery of the first surface of the substrate. The second plurality of signal conductors are arranged along a periphery of the second surface of the substrate. The heatsink includes a first portion positioned along the first surface of the substrate and a second portion positioned along the second surface of the substrate.