Root cause identified, but it's taken the better part of a year
After what has felt like an eternity, Intel reckons it has finally identified why its 13th and 14th Gen Core series desktop processors have been so unstable.
Since then, Intel has issued a total of four public statements addressing stability, each time getting closer to the Vmin shift issue within the CPU's microcode. The chipmaker thenNow Intel has stated that the microcode bug"might" be affecting all 13th and 14th Gen desktop chips with a thermal design power of 65 W and higher.Motherboard power delivery settings exceeding Intel power guidance. a.
Microcode and BIOS code requesting elevated core voltages which can cause Vmin shift especially during periods of idle and/or light activity. a. Mitigation: Intel® is releasing microcode 0x12B, which encompasses 0x125 and 0x129 microcode updates, and addresses elevated voltage requests by the processor during idle and/or light activity periods.
When microcode isn't up to scratch, or there's an inherent design issue within the silicon itself, a negative shift in Vmin can lead to instability. Another factor that can wreak havoc on Vmin is heat – and we all know Intel chips run hot.
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