Unveiling the Real Performance of LPDDR5 Memories

Lukas Steiner; Matthias Jung; Michael Huonker; Norbert Wehn

doi:10.1145/3565053.3565062

Unveiling the Real Performance of LPDDR5 Memories

Hardware Architecture 2022-10-03 v1

Authors: Lukas Steiner , Matthias Jung , Michael Huonker , Norbert Wehn

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Abstract

LPDDR5 is the latest low-power DRAM standard and expected to be used in various application fields. The vendors have published promising peak bandwidths up to 50 % higher than those of the predecessor LPDDR4. In this paper we evaluate the best-case and worst-case real bandwidth utilization of different LPDDR5 configurations and compare the results to corresponding LPDDR4 configurations. We also show that an upgrade from LPDDR4 to LPDDR5 does not always bring a bandwidth advantage and that some LPDDR5 configurations should be avoided for specific workloads.

Keywords

lpddr5 lpddr4 dram bandwidth utilization memory standard workload

Cite

@article{arxiv.2209.14756,
  title  = {Unveiling the Real Performance of LPDDR5 Memories},
  author = {Lukas Steiner and Matthias Jung and Michael Huonker and Norbert Wehn},
  journal= {arXiv preprint arXiv:2209.14756},
  year   = {2022}
}

Comments

ACM/IEEE International Symposium on Memory Systems (MEMSYS 2022)

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