Presented herein is a cold plate assembly including a sub-plate and a vapor chamber for use as part of a remote fin cooling system for an electronic device. The sub-plate includes a first surface, a second surface, and a plurality of pipes. The vapor chamber includes a first wall and a second wall opposite the first wall. The first wall and the second wall define an interior cavity having a first depth for one or more first portions of the vapor chamber and a second depth for one or more second portions of the vapor chamber. The second surface of the sub-plate is attached to the first wall of the vapor chamber.