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As high performance computing (HPC) system performance requirements increase, it is necessary to investigate new methods for integrating system components. Of interest is the applicability of 3D packaging approaches to HPC systems. Using thermal test chips, we designed and assembled a 3D processor-memory module with an integrated power delivery network to investigate interconnect density, integration, testability, and rework issues with 3D integrated packaging in an HPC environment. The design was based on interconnection and power delivery requirements for a processor-memory module capable of supporting 64 full-duplex 30G SerDes, routing for 800 processor-to-memory pins, an integrated multi-tiered power delivery network, and a thermal management solution capable of dissipating a nominal processor heat flux of 100 W/cm2. The technologies selected—semi-rigid flex, power connectors, land grid array (LGA) attach with an anisotropic film, and cold plate-based cooling—are all commercially available technologie...

3D Integrated Packaging Approach for High Performance Processor-Memory Module