Skip to main content

More than seven months later, Intel CPU instability issue might be over

Intel's 14900K CPU socketed in a motherboard.
Jacob Roach / Digital Trends

We first reported on the Intel CPU instability issue in February 2024, and since then, Intel has offered various fixes that helped, but still failed to fix the problem once and for all. Now, it finally seems like the owners of Intel’s best CPUs might soon be able to rest easy. Intel has shared a new update that pinpoints the four causes of Raptor Lake problems and provides a fix.

Intel’s July update on the matter disclosed that the company was aware of issues within the microcode and that the problem was related to incorrect voltages. Today’s update breaks this down into four operating scenarios that can cause problems. Intel now refers to these long-lasting issues as the “Vmin Shift Instability.”

“Intel has localized the Vmin Shift Instability issue to a clock tree circuit within the IA core which is particularly vulnerable to reliability aging under elevated voltage and temperature. Intel has observed these conditions can lead to a duty cycle shift of the clocks and observed system instability,” said Thomas Hannaford in an Intel community post. Breaking it down into simpler terms, Intel has confirmed that increased voltage affects the stability of these processors, even if operating within warrantied voltages.

Intel Core i9-13900K held between fingertips.
Jacob Roach / Digital Trends

Intel’s already provided microcode updates for three out of the four identified root causes behind the Vmin Shift Instability. This includes:

  • Some motherboards pushed the power delivery settings higher than what Intel recommended. This was addressed with Intel’s Baseline Profiles, which ended up being quite confusing.
  • An eTVB (efficient thermal velocity boost) microcode algorithm allowed Intel CPUs to run at higher performance modes despite elevated temperatures, thus endangering the processor. A June 2024 BIOS update fixed this problem.
  • Another microcode algorithm (serial voltage identification, or SVID) requested high voltages combined with just the right frequency and duration to make the CPU unstable. Intel addressed this in August.
  • Finally, Intel reports that the microcode and the BIOS were requesting elevated core voltages, which caused the Vmin Shift Instability when the CPU was running light tasks or even was completely idle.

This final root cause of Vmin Shift is now being addressed by Intel. The company is releasing a microcode update, 0x12B, which includes the previous two updates and also fixes the elevated voltage requests. Depending on your motherboard vendor, you might have to wait — the update is being rolled out and it’ll probably take a little while for everyone’s BIOS updates to be up for grabs.

Intel assured that the new microcode shouldn’t have any impact on performance, citing internal benchmarks in tools like Cinebench R23 or Crossmark, as well as gaming tests in Cyberpunk 2077Shadow of the Tomb Raider, and more. The company also reaffirmed that, despite previous reports, the Vmin Shift Instability doesn’t affect laptops and CPUs of other generations.

Is this really the end of unstable Intel CPUs? We’ll have to wait and see, but right now, Intel certainly appears to think so — and that’s great news for those who are using CPUs like the Core i9-14900K. It might finally be time to breathe a sigh of relief and keep an eye out for those microcode updates.

Monica J. White
Monica is a UK-based freelance writer and self-proclaimed geek. A firm believer in the "PC building is just like expensive…
Intel just discontinued a CPU that’s only 2 years old
Core i9-12900KS processor socketed in a motherboard.

Intel is moving on. The company recently posted two Product Change Notifications (PCN) that announced the discontinuation of multiple processors, including the Core i9-12900KS that was released just over two years ago.

In addition to the special-edition version of the Core i9-12900K, Intel announced that it's discontinuing the remaining CPUs in its 10th-gen lineup. The main stack of Intel's 10th-gen lineup, including processors like the Core i9-10900K, has already been discontinued. The newest PCN includes less prominent models, such as Intel's Pentium and Celeron lineups. It also includes the Core i5-10400F, which has remained one of the more popular budget options among Intel's CPU options.

Read more
Four months later, Intel CPU stability issues remain
Intel's 14900K CPU socketed in a motherboard.

It's been over four months since the first reports of instability in Intel's top CPUs started cropping up, and we are yet to see a fix. Although Intel has been working with its partners on delivering updates that would address the problem, the company itself had to admit in a recent community post that it still hasn't found the root cause.

Meanwhile, hardware testers are finding that even using Intel's recommended workarounds still ends up in crashes and unstable performance -- and the only solutions that seem to work are things that you'll have to settle for.

Read more
4 CPUs you should buy instead of the Intel Core i9-13900K
Intel Core i9-13900K held between fingertips.

Intel's Core i9-13900K is one of the best processors you can buy. The 24-core behemoth can rip through productivity workloads with ease, and it's easily one of the fastest gaming CPUs money can buy. Even with so much power under the hood, it's not the right choice for everyone.

Supreme power comes at a supreme cost, and for the Core i9-13900K, that comes in the form of heat and power draw. In addition, a recent wave of instability has hit Intel's high-end CPUs like the Core i9-13900K, making alternatives a bit more attractive.

Read more