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  4. 3D-ICE: a Compact Thermal Model for Early-Stage Design of Liquid-Cooled ICs
 
research article

3D-ICE: a Compact Thermal Model for Early-Stage Design of Liquid-Cooled ICs

Sridhar, Arvind  
•
Vincenzi, Alessandro  
•
Atienza Alonso, David  
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2014
IEEE Transactions on Computers

Liquid-cooling using microchannel heat sinks etched on silicon dies is seen as a promising solution to the rising heat fluxes in two-dimensional and stacked three-dimensional integrated circuits. Development of such devices requires accurate and fast thermal simulators suitable for early-stage design. To this end, we present 3D-ICE, a compact transient thermal model (CTTM), for liquid-cooled ICs. 3D-ICE was first advanced by incorporating the 4-resistor model based CTTM (4RM-based CTTM). It was enhanced to speed up simulations and to include complex heat sink geometries such as pin fins using the new 2 resistor model (2RM-based CTTM). In this paper, we extend the 3D-ICE model to include liquid-cooled ICs with multi-port cavities, i.e., cavities with more than one inlet and one outlet ports, and non-straight microchannels. Simulation studies using a realistic 3D multiprocessor system-on-chip (MPSoC) with a 4-port microchannel cavity highlight the impact of using 4-port cavity on temperature and also demonstrate the superior performance of 2RM-based CTTM compared to 4RM-based CTTM. We also present an extensive review of existing literature and the derivation of the 3D-ICE model, creating a comprehensive study of liquid-cooled ICs and their thermal simulation from the perspective of computer systems design. Finally, the accuracy of 3D-ICE has been evaluated against measurements from a real liquid-cooled 3D IC, which is the first such validation of a simulator of this genre. Results show strong agreement (average error<10%), demonstrating that 3D-ICE is an effective tool for early-stage thermal-aware design of liquid-cooled 2D/3D ICs.

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TC2014-3D-ICE-06532287.pdf

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http://purl.org/coar/version/c_970fb48d4fbd8a85

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