What do you think it means when Intel provides a document with the title “Title Enhanced Thermal Velocity Boost (eTVB) May Miscalculate Frequency Limits” and the subline “Issue Description An incorrect frequency limit calculation may allow the processor to operate at a high frequency state at a high temperature”? That’s when it gets interesting, because the problem with potentially unstable 13th and 14th generation K-CPUs and possible consequential damage has been around for a long time.
Addendum from 15.06.2024 – 09.00 a.m.
Another piece of the puzzle, but not the so-called “root cause”. I’ll add this as a note, because once again I’ve been quoted incompletely and sometimes incorrectly. And since it doesn’t seem to be enough to recognize a comment from the context, I’ll put a heading above it so that you don’t have to spend a lot of time and effort using the wayback machine.
It is of course a pity that the following document has been provided with an NDA and not (yet) used as the basis for a public statement, but perhaps that will come. If not, I have something for you that should shed some light on the matter. The other comments are also interesting. Let’s start with the preceding summary and text description.
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)
What is eTVB (enhanced Thermal Velocity Boost)?
In order to understand the following text correctly, I’ll start with a little reminder from my launch article on Raptor Lake S. Intel’s eTVB, or Enhanced Thermal Velocity Boost, is a technology developed specifically for Intel’s Raptor Lake S processors. This technology optimizes CPU performance by automatically overclocking the processor cores beyond the maximum turbo frequency, depending on the available thermal capacity and power consumption. This means that if the temperature of the processor is low enough and sufficient power is available, eTVB can increase the clock frequency to deliver improved performance for short-term, compute-intensive tasks.
This feature is particularly useful for games and applications that require high burst speeds. Intel integrates this technology into its latest desktop CPUs to ensure users get maximum performance, especially when combined with cooling solutions that support the low temperatures required for maximum boost performance. This also improves the overall efficiency of the processors as they can dynamically adapt to performance requirements and thermal conditions.
13th and 14th Generation K SKU Processor Instability Issue Update
The actual announcement now refers to the conclusion that Intel has drawn from its own investigations. The original text is also highlighted in blue here. Due to the protection of my sources, I have not taken a screenshot, but copied the text in excerpts:
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.
Source: own
165 Antworten
Kommentar
Lade neue Kommentare
Veteran
1
Mitglied
1
Urgestein
1
Neuling
Mitglied
Mitglied
Mitglied
1
Veteran
Neuling
Urgestein
Mitglied
Urgestein
1
1
Urgestein
Alle Kommentare lesen unter igor´sLAB Community →