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Well, I guess everyone by now is already aware of the stability issue on Intel's 13th Generation Raptor Lake and 14th Generation Raptor Lake Refresh chips.
Although Intel has yet to publicly issue a statement, it appears that Igor's Lab has discovered internal documents (NDA), which provides some insight what has been causing these issues from the start.
As per INTEL, the root cause appears to be an incorrect value within the microcode algorithm associated with the eTVB (Enhanced Thermal Velocity Boost) feature that comes with 13th and 14th Gen Unlocked CPUs.
The increased frequency and the corresponding high voltages which lead to high temperatures can lead to a reduction in the processor's reliability, which could mean that the CPU will degrade over time.
A new BIOS will soon be rolled out with the necessary microcode, version 0x125 or later. Intel has asked OEMs/customers to update the BIOS of their PCs by 7/19 (2024).
https://www.igorslab.de/en/intel-co...z_v3tgRfFOcrOADVIs_aem_ZmFrZWR1bW15MTZieXRlcw
Sorry for the poor formatting and too many typos ! My keyboard is bashing me erratically today, lol.
Although Intel has yet to publicly issue a statement, it appears that Igor's Lab has discovered internal documents (NDA), which provides some insight what has been causing these issues from the start.
As per INTEL, the root cause appears to be an incorrect value within the microcode algorithm associated with the eTVB (Enhanced Thermal Velocity Boost) feature that comes with 13th and 14th Gen Unlocked CPUs.
The increased frequency and the corresponding high voltages which lead to high temperatures can lead to a reduction in the processor's reliability, which could mean that the CPU will degrade over time.
A new BIOS will soon be rolled out with the necessary microcode, version 0x125 or later. Intel has asked OEMs/customers to update the BIOS of their PCs by 7/19 (2024).
https://www.igorslab.de/en/intel-co...z_v3tgRfFOcrOADVIs_aem_ZmFrZWR1bW15MTZieXRlcw
Root Cause Root cause is an incorrect value in a microcode algorithm associated with the eTVB feature.
Implication:: Increased frequency and corresponding voltage at high temperature may reduce processor reliability. Observed Found internally.
Impacted platforms:: Raptor Lake S, Raptor Lake Refresh S (CPUID 0xB0671) --- via Igor's Lab
Failure Analysis (FA) of 13th and 14th Generation K SKU processors indicates a shift in minimum operating voltage on affected processors resulting from cumulative exposure to elevated core voltages.
Intel® analysis has determined a confirmed contributing factor for this issue is elevated voltage input to the processor due to previous BIOS settings which allow the processor to operate at turbo frequencies and voltages even while the processor is at a high temperature. Previous generations of Intel® K SKU processors were less sensitive to these type of settings due to lower default operating voltage and frequency.
Intel® requests all customers to update BIOS to microcode 0x125 or later by 7/19/2024.
This microcode includes an eTVB fix for an issue which may allow the processor to enter a higher performance state even when the processor temperature has exceeded eTVB thresholds.
via Igor's Lab
Sorry for the poor formatting and too many typos ! My keyboard is bashing me erratically today, lol.
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