3D-ProWiz: An Energy-Efficient and Optically-Interfaced 3D DRAM Architecture with Reduced Data Access Overhead

Ishan G. Thakkar, Sudeep Pasricha

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


This paper introduces 3D-ProWiz, which is a high-bandwidth, energy-efficient, optically-interfaced 3D DRAM architecture with fine grained data organization and activation. 3D-ProWiz 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 to individual subarrays using TSVs and fanout buffers enables 3D-ProWiz to use smaller dimension subarrays without significant area overhead. The use of TSVs at subarray-level granularity eliminates the need to use slow and power hungry global lines, which in turn reduces the random access latency and activation-precharge energy. 3D-ProWiz 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-ProWiz achieves 41.9 percent reduction in average latency, 52 percent reduction in average power, and 80.6 percent reduction in energy-delay product (EDP) on average over DRAM architectures from prior work.

Original languageEnglish
Article number7274744
Pages (from-to)168-184
Number of pages17
JournalIEEE Transactions on Multi-Scale Computing Systems
Issue number3
StatePublished - 2015

Bibliographical note

Funding Information:
This research is supported by grants from SRC, the US National Science Foundation (NSF) (CCF-1252500, CCF-1302693), and AFOSR (FA9550-13-1-0110).

Publisher Copyright:
© 2015 IEEE.


  • DRAM
  • Fine-grained activation
  • energy-efficiency
  • fanout buffers

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Information Systems
  • Hardware and Architecture


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