Windows 11 is causing performance issues on some computers with AMD Ryzen processors

Windows 11 is already among us or at least among those who can install the new version of Windows on their compatible computers. And with the arrival, now for everyone, after going through the Insider Program, some bugs and problems begin to appear. The last issue relates Windows 11 to AMD Ryzen processors.

In fact, it is not something that is based on comments from users on social networks, since the information comes from the same company AMD that announces that Windows 11 can reduce performance by up to 15% in some cases of computers that are using a processor AMD Ryzen.

Waiting for a patch to fix it

Windows 11 can cause problems on computers with an AMD Ryzen processor. The company states that those affected may have performance losses that reach 15% compared to what the same computer offers when it has Windows 10 installed.

Specifically, AMD and Microsoft talk about different problems related to Windows 11 and Ryzen processors. The former can triple the latency of the L3 cache, which could cause 3-5% lower performance in most affected applications. For some games, the loss could be 10-15%.

These computers also experience problems with the so-called “preferred core”, which aims to switch threads to the fastest core of a processor. AMD warns that users could experience performance issues in CPU-dependent tasks, especially in the case of processors with more than eight cores around a power of 65W TDP, an acronym for Thermal Design Power or Thermal Design Power).

For now, both AMD and Microsoft are investigating these issues and working on a software update to resolve them , an update that may arrive later this month to try and resolve those issues.

Known performanceChange impact
Measured and functional L3 cache latency may increase by ~3XApplications sensitive to memory subsystem access time may be impacted. Expected performance impact of 3-5% in affected applications, 10-15% outliers possible in games commonly used for eSports
UEFI CPPC2 (“preferred core”) may not preferentially schedule threads on a processor’s fastest coreApplications sensitive to the performance of one or a few CPU threads may exhibit reduced performance

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