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arXiv · 2209.14756

Unveiling the Real Performance of LPDDR5 Memories

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.

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Lukas Steiner, Matthias Jung, Michael Huonker, Norbert Wehn. 2022-09-28. Unveiling the Real Performance of LPDDR5 Memories. https://doi.org/10.1145/3565053.3565062

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