Intel Core 13th and 14th Gen Desktop Instability Root Cause Update

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Intel® has identified four (4) operating scenarios that can lead to Vmin shift in affected processors:
1 Motherboard power delivery settings exceeding Intel power guidance.
a. Mitigation: Intel® Default Settings recommendations for Intel® Core™ 13th and 14th Gen desktop processors.
2 eTVB Microcode algorithm which was allowing Intel® Core™ 13th and 14th Gen i9 desktop processors to operate at higher performance states even at high temperatures.
a. Mitigation: microcode 0x125 (June 2024) addresses eTVB algorithm issue.
3 Microcode SVID algorithm requesting high voltages at a frequency and duration which can cause Vmin shift.
a. Mitigation: microcode 0x129 (August 2024) addresses high voltages requested by the processor.
4 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. Regarding the 0x12B update, Intel® is working with its partners to roll out the relevant BIOS update to the public.