Thermal heatsink systems and methods in information handling systems
Information handling system (IHS) heatsinking systems and methods may employ a thermally conductive compression attached memory module (CAMM) bolster plate affixed to one surface of a circuit board of the CAMM, between a central processing unit (CPU) of the IHS and memory devices mounted on the CAMM, to provide compression between the CAMM and a z-axis compression connector and to capture and dissipate heat from the CPU and the memory devices. Spacing between the CPU and the DIMM may enable this capture and dissipation of heat from the CPU. The bolster plate may be configured to receive at least one conductive fastener that bears on the bolster plate and presses the CAMM to the z-axis compression connector, and to conductively thermally couple the CAMM and bolster plate to a ground plane of a system printed circuit board (PCB) mounting the CPU and the CAMM.
1. An information handling system (IHS) heatsink comprising a thermally conductive compression attached memory module (CAMM) bolster plate affixed to one surface of a circuit board of a CAMM, between a central processing unit (CPU) of the IHS and memory devices mounted on at least one surface of a circuit board of the CAMM, to provide compression between the CAMM and a z-axis compression connector and to capture and dissipate heat from the CPU and the memory devices, and wherein the bolster plate is configured to receive at least one conductive fastener that bears on the bolster plate and presses the CAMM to the z-axis compression connector, to provide the compression between the CAMM and a z- axis compression connector and conductively couple the CAMM and bolster plate to a ground plane of a system printed circuit board (PCB) mounting the CPU and the CAMM.
2. The heatsink of claim 1 , wherein spacing between the CPU and the CAMM enables the capture and dissipation of heat from the CPU.
3. The heatsink of claim 1 , wherein the bolster plate and the at least one conductive fastener are made of conductive metal.
4. The heatsink of claim 1 , wherein the bolster plate further comprises a generally perpendicular flange disposed between the CPU and the CAMM.
5. The heatsink of claim 1 , wherein the bolster plate is configured to be disposed immediately adjacent a vapor chamber disposed over the CPU to capture and dissipate heat from the vapor chamber.
6. The heatsink of claim 5 , wherein grounding of the vapor chamber to a ground plane of the system PCB enables the capture and dissipation of heat from the vapor chamber.
7. An information handling system (IHS), comprising:
a central processing unit (CPU) CPU;
a compression attached memory module (CAMM) comprising:
a plurality of memory devices mounted on at least one of surface of a circuit board of the CAMM; and
an array of surface contact connections, each surface contact connection configured to be engaged with an associated contact element of a z-axis compression connector;
a thermally conductive heatsink bolster plate affixed to one surface of the circuit board of the CAMM, between the CPU and the memory devices, to provide compression between the CAMM and the z-axis compression connector, and to capture and dissipate heat from the CPU and memory devices; and
a system PCB mounting the CPU and the CAMM and a vapor chamber disposed over the CPU, wherein spacing between the CPU and the CAMM enables the capture and dissipation of heat from the vapor chamber, via the thermally conductive heatsink bolster plate.
8. The IHS of claim 7 , wherein the memory devices are accessed via at least one memory channel and the array of surface contact connections are configured to conduct signals for the at least one memory channel, length matching and impedance control of the at least one memory channel provided in the circuit board of the CAMM.
9. The IHS of claim 8 , further comprising a system printed circuit board (PCB) mounting the CPU and the CAMM, the system PCB comprising traces of a plurality of lengths providing system PCB portions of the at least one memory channel.
10. The IHS of claim 9 , wherein the traces providing system PCB portions of the at least one memory channel provide immediate proximate spacing between the CPU and the CAMM to enable the capture and dissipation of heat from the CPU by the thermally conductive heatsink bolster plate.
11. The IHS of claim 7 , further comprising at least one conductive fastener configured to bear the thermally conductive heatsink bolster plate on the CAMM to provide the compression between the CAMM and the z-axis compression connector, and to conductively couple the CAMM and bolster plate to a ground plane of a system PCB mounting the CPU and the CAMM.
12. The IHS of claim 11 , wherein the thermally conductive heatsink bolster plate and the at least one conductive fastener are made of conductive metal.
13. The IHS of claim 7 , wherein the bolster plate further comprises a generally perpendicular flange disposed between the CPU and the CAMM.
14. The IHS of claim 7 , wherein grounding of the vapor chamber to a ground plane of the system PCB enables the capture and dissipation of heat from the vapor chamber.
15. An information handling system (IHS) heatsinking method comprising pressing an IHS compression attached memory module (CAMM) to a z-axis compression connector using a thermally conductive CAMM bolster plate disposed between a central processing unit (CPU) of the IHS and memory devices mounted on at least one of surface of a circuit board of the CAMM, by at least one conductive fastener that bears on the bolster plate and presses the CAMM to the z-axis compression connector, conductively coupling the CAMM and bolster plate to a ground plane of a system printed circuit board (PCB) mounting the CPU and the CAMM, the bolster plate capturing and dissipating heat from at least the CPU, including dissipating heat from at least the CPU to the ground plane of the system PCB.
16. The method of claim 15 , wherein the bolster plate further comprises a generally perpendicular flange and the method further comprises disposing the flange between the CPU and the CAMM.