Published in PC Hardware

AMD fixes AGESA ComboAM5PI firmware

by on13 January 2023

Ryzen 5 7600X is fully functional

AMD has fixed a problem with the firmware behind its Ryzen 5 7600X.

The AGESA ComboAM5PI firmware with SMU 84.79.204 unintentionally disabled cores on Ryzen 5 7600X chips with dual-CCD designs.

This caused performance degradation on dual-CCD Ryzen 5 7600X samples because it deactivated Core0. Sometimes the system outright didn't post because the firmware tried to boot off a single CCD.

Other Ryzen 7000 chips were probably affected, and ASRock, Asus and Gigabyte, removed the firmware from their respective motherboard support pages.

The problem was relatively easy to fix. Hardware leaker chi11eddog, the chipmaker, has already distributed the updated firmware to its partners.

The AGESA version remains the same, but AMD updated the System Management Unit (SMU), which manages various aspects of the processor, such as clock speeds, voltages, and power limits.

The old firmware had SMU 84.79.204, while the new firmware uses SMU 84.79.210. MSI has deployed the latest firmware for the company's AMD 600-series motherboards.

The AGESA microcode is crucial as it supports AMD's recently-announced Ryzen 7000 non-X chips, such as the Ryzen 9 7900 and Ryzen 7000 X3D parts with 3D V-Cache.


Last modified on 13 January 2023
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