An Optimized 3D-Stacked Memory Architecture by Exploiting Excessive, High-Density TSV Bandwidth

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Provided by: Georgia Institute of Technology
Topic: Storage
Format: PDF
Memory bandwidth has become a major performance bottleneck as more and more cores are integrated onto a single die, demanding more and more data from the system memory. Several prior studies have demonstrated that this memory bandwidth problem can be addressed by employing a 3D-stacked memory architecture, which provides a wide, high frequency memory-bus interface. Although previous 3D proposals already provide as much bandwidth as a traditional L2 cache can consume, the dense Through Silicon-Vias (TSVs) of 3D chip stacks can provide still more bandwidth.
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