Ryzen 5 7600X is one of the most successful processors of recent times. However, firmware for AMD AGESA ComboAM5PI motherboards 1.0.0.4 with SMU 84.79.204 inadvertently disabled cores on dual-CCD chips. Updated AMD firmware with new SMU 84.79.210 seems to have fixed this problem.
The previous firmware caused performance degradation on dual-CCD Ryzen 5 7600X samples because it disabled Core0. In some cases, the system did not start immediately because the firmware tried to boot from one CCD. Other Ryzen 7000 chips are also likely to be affected. In any case, AMD was quick to identify the problem and its partners, including ASRock, Asus and Gigabyte, removed the problematic firmware from the X670 and B650 motherboard support pages.
MSI put back AGESA 1.0.0.4 BIOS with new SMU 84.79.210. New SMU fixes boot issue with very few 6-core & 12-core Raphael CPUs, which are “downcored” with 2-CCD chip, with both Core0 & Core7 disabled. pic.twitter.com/Ru8jScN7oY
— chi11eddog (@g01d3nm4ng0) January 12, 2023
According to chi11eddog, the chipmaker has already sent the updated firmware to its partners. The AGESA version remains the same, but AMD has updated the system management unit (SMU), which controls various aspects of the processor, such as clock speed, voltage, and power limits.
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You can distinguish the new firmware from the previous one by the SMU version. The old firmware had SMU 84.79.204, while the new firmware uses SMU 84.79.210. MSI has released the latest firmware for AMD 600 series motherboards. The firmware is still in beta testing, so update at your own risk.
The AGESA 1.0.0.4 microcode is important because it supports the recently announced AMD Ryzen 7000 processors without X-index and Ryzen 7000 X3D with 3D V-Cache expected in February.
AMD Ryzen 7000 CPUs likely to get faster 3D V-Cache than Ryzen 7 5800X3D
Source: Tom’s Hardware
