The present disclosure, in some embodiments, relates to a method of forming a semiconductor package. The method may be performed by attaching a first thermal conductivity layer to an upper surface of a first chip, and attaching a second thermal conductivity layer to an upper surface of a second chip. A first support substrate is attached to lower surfaces of the first chip and the second chip. A molding compound is formed over the first support substrate and laterally surrounds the first chip and the second chip. The first support substrate is replaced with a package substrate after forming the molding compound over the first support substrate.