Case study

GNR-SMU: mapping Ryzen SMU telemetry and controls

GNR-SMU maps undocumented AMD Ryzen SMU power-management tables through hardware measurements, load experiments and Linux sensor comparisons. It publishes model-specific field maps and Linux telemetry tools, with guarded controls for Granite Ridge CPUs and read-only telemetry for the Vermeer 5600X.

Targets: Firmware
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08
Evidence class: C2 code & docs, no demo or download

Stars: 8
Last commit: 2026-09-11
Language: Python
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a demo observed; no download method found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: Requires Linux, the ryzen_smu driver and a documented CPU profile: 9800X3D, 9950X3D or 5600X.
Limits: SMU writes are limited to validated Granite Ridge profiles; the 5600X profile is read-only.
Limits: Many PM-table fields remain unidentified; the author reports measuring the complete 9800X3D index map on one machine.
License: MIT License.

Cite

BibTeX

@misc{gnr-smu-case,
  title = {{GNR-SMU: mapping Ryzen SMU telemetry and controls}},
  howpublished = {\url{https://github.com/Kyworn/gnr-smu}},
  url = {https://github.com/Kyworn/gnr-smu},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/gnr-smu-case/}}
}

Plain text

GNR-SMU: mapping Ryzen SMU telemetry and controls. https://github.com/Kyworn/gnr-smu (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/gnr-smu-case/

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About this entry

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Primary sources

README.md GitHub · Kyworn/gnr-smu · Revision def79d6
research/README.md GitHub · Kyworn/gnr-smu · Revision def79d6