3D-Wiz: A novel high bandwidth, optically interfaced 3D DRAM architecture with reduced random access time

Ishan G. Thakkar, Sudeep Pasricha

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

This paper introduces 3D-Wiz, which is a high bandwidth, low latency, optically interfaced 3D DRAM architecture with fine grained data organization and activation. 3D-Wiz integrates sub-bank level 3D partitioning of the data array to enable fine-grained activation and greater memory parallelism. A novel method of routing the internal memory bus using TSVs and fan-out buffers enables 3D-Wiz to use smaller dimension subarrays without significant area overhead. This in turn reduces the random access latency and activation-precharge energy. 3D-Wiz demonstrates access latency of 19.5ns and row cycle time of 25ns. It yields per access activation energy and precharge energy of 0.78nJ and 0.62nJ respectively with 42.5% area efficiency. 3D-Wiz yields the best latency and energy consumption values per access among other well-known 3D DRAM architectures. Experimental results with PARSEC benchmarks indicate that 3D-Wiz achieves 38.8% improvement in performance, 81.1% reduction in power consumption, and 77.1% reduction in energy-delay product (EDP) on average over 3D DRAM architectures from prior work.

Original languageEnglish
Title of host publication2014 32nd IEEE International Conference on Computer Design, ICCD 2014
Pages1-7
Number of pages7
ISBN (Electronic)9781479964925
DOIs
StatePublished - Dec 3 2014
Event32nd IEEE International Conference on Computer Design, ICCD 2014 - Seoul, Korea, Republic of
Duration: Oct 19 2014Oct 22 2014

Publication series

Name2014 32nd IEEE International Conference on Computer Design, ICCD 2014

Conference

Conference32nd IEEE International Conference on Computer Design, ICCD 2014
Country/TerritoryKorea, Republic of
CitySeoul
Period10/19/1410/22/14

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications

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