Promises and Perils in 3D Architecture
نویسنده
چکیده
The idea of 3D stacking architecture was initially introduced to postpone the end of Moore’s law for CMOS technology. By stacking dies vertically on each other and connecting them with die-to-die vias, overall timing and energy efficiency improve due to better routing and shorter wires. It also introduces the notion of mixed process technology integration, connecting dies with different process technologies with high bandwidth connections. The promise of 3D also brings with it a new set of challenges in managing thermal constraints, power delivery networks, and coming to terms with changes to transistor properties caused by new types of mechanical stress. This paper overviews the primary methods for 3D stacking, the challenges it faces, and studies its opportunities in broad design range: from general-purpose to application-specific systems. In the last part, these implementations are evaluated and some future directions are proposed.
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