Patent ID: 7609523

Claim:
A memory module assembly comprising: a memory module printed circuit board assembly (PCBA) including: a substrate having opposing first and second surfaces, a plurality of wiring traces formed on the first and second surfaces, at least some of the wiring traces being connected to metal contact pads formed along a connector edge of the substrate, and a plurality of first integrated circuit (IC) devices mounted on the first surface of the substrate such that an upper surface of each of the plurality of first IC devices faces away from the substrate, and a plurality of second IC devices mounted on the second surface of the substrate such that an upper surface of each of the plurality of second IC devices faces away from the substrate; a first heat-sink plate having a first outer surface and an opposing first underside surface; a second heat-sink plate having a second outer surface and an opposing second underside surface; a plurality of adhesive portions including a first adhesive portion sandwiched between the first underside surface of the first heat-sink plate and the upper surface of an associated IC device of said plurality of first IC devices, and a second adhesive portion sandwiched between the second underside surface of the second heat-sink plate and the upper surface of an associated IC device of said plurality of second IC devices; and means for pressing the first and second heat-sink plates onto the first and second surfaces, respectively, such that the first and second heat-sink plates are rigidly secured to the substrate, wherein a first plurality of said first integrated circuit (IC) devices and a second plurality of said first IC devices are disposed on the first surface of the substrate such that upper surfaces of the first and second pluralities of first IC devices define a first plane that is parallel to the first surface of the substrate, wherein the memory module PCBA further comprises a third IC device disposed on the first surface between the first and second pluralities of first devices, the second IC device having an upper surface defining a second plane that is parallel to the first surface of the substrate, wherein the first plane is located between the second plane and the first surface of the substrate, and wherein the first heat-sink plate includes a first recessed region having a first upper surface region and an opposing first planar underside surface region, a second recessed region having a second upper surface region and an opposing second planar underside surface region, and a raised pocket structure defining a third upper surface region and an opposing third planar underside surface region, the pocket region being disposed between the first and second recessed regions.