Ryzen 7 7800X3D burns and swells on updated MSI X870 motherboard
© Magoth04 A Ryzen 7 7800X3D owner has reported a failed processor with visible burn damage and swelling on the package. The system reportedly shut down while gaming after around three months of use, then entered a boot loop. The damaged CPU was paired with an MSI PRO X870-P WIFI motherboard, which also stopped working.
According to the owner, the system had no manual CPU tuning, undervolting or overclocking. EXPO was the only BIOS setting changed, while a 360 mm AIO handled cooling. The owner later confirmed that the motherboard was running the latest available BIOS and that temperatures had appeared normal before the failure.
This case brings back Ryzen CPU issues from 2023
The swollen package is familiar from the Ryzen 7000 failures reported in 2023. AMD eventually identified operation outside specification limits as the cause and distributed new AGESA firmware that capped SoC voltage at 1.30V. At the time, AMD specifically recommended updating AM5 motherboard BIOSes, while keeping EXPO and PBO support available.
© Magoth04 ASRock acknowledged a separate AM5 issue in 2025 involving overly high PBO TDC and EDC settings, which were later reduced through BIOS updates. Some Ryzen failures on ASRock boards have still been reported in 2026. But this case involves an MSI X870 board with an updated BIOS. The familiar package swelling shows that this type of physical damage can still occur years after AMD introduced its AM5 voltage safeguards.
The Redditor was told to send the CPU through RMA. AMD might be able to determine what caused the failure, although it would be surprising if the company shared the results of such an investigation publicly.
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7800X3D burnt and killed the motherboard after 3 months. Silicon lottery or something else? Should we buy another one?
by u/Magoth04 in pcmasterrace
