Windows 11: 15% performance drop on Ryzen?


This is serious information since it is AMD that has reported the performance problems that their Ryzen processors encounter when running certain applications after installing the Windows 11 operating system.

AMD Ryzen 5000 The main concern is that the latency of the L3 cache has tripled with the simple fact of moving from Windows 10 to Windows 11. But it is also noted, as if this were not enough, that AMD’s system management of ” favorite cores “which is a Ryzen-specific feature, is also altered so that applications that depend on one or a few cores lose performance. The information provided by AMD:

  • The latency of the functional and measured L3 cache can be multiplied by 3. Applications sensitive to the access time of the memory subsystem may be affected.

A performance impact of 3-5% is expected in affected applications, with outliers of 10-15% possible in games commonly used for eSports.

  • UEFI CPPC2 (“Preferred Core”) may not preferentially schedule threads on the fastest core of a processor. Applications that are sensitive to the performance of one or a few processor threads may experience reduced performance.

A fix for October

Let’s not dramatize the situation though, as AMD has officially announced that the necessary patches are already scheduled to be pushed in the coming days of October. To address these issues, AMD and Microsoft have rolled out two Windows 11 updates, as well as software updates from AMD that will be rolled out this month. Nevertheless, we should remember that Microsoft insisted on the performance of its new OS by proclaiming very early on that Windows 11 would be faster. But let’s be patient, we are only in the first hours of this version’s life… Let’s give the product a chance!