If you own an AMD Ryzen CPU and you were thinking of upgrading to the latest Windows 11, you may want to hold off for a bit until an official fix comes along, as AMD has recently stated that some issues with Windows 11 may cause performance of AMD Ryzen processors to drop by up to 10-15%.
AMD has issued a warning to users with Ryzen CPUs that Windows 11 could reduce performance on their processor by 3-5% in “applications sensitive to memory subsystem access time”, but have also warned that some games can see performance drop by up to 10-15%, though it does seem to be more common for eSports titles.
Here’s the two known issues and how they can affect you:
|Known Performance Changes||Impact||Resolution|
|Measured and functional L3 cache latency may increase by ~3X.||- Applications 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.||A Windows update is in development to address this issue with expected availability in October of 2021.|
|UEFI CPPC2 (“preferred core”) may not preferentially schedule threads on a processor’s fastest core.||- Applications sensitive to the performance of one or a few CPU threads may exhibit reduced performance.- Performance impact may be more detectable in >8-core processors above 65W TDP.||A software update is in development to address this issue with expected availability in October of 2021.|
Basically, don’t update to Windows 11 just yet if you own an AMD Ryzen processor. AMD has said that they expect both a Windows and software update to resolve the problems sometime in October 2021, so hopefully won’t be too long. Thankfully, if you only recently updated to Win11 then you likely are still within the 10 days to easily revert back to Windows 10.
What do you think? Have you upgraded to Windows 11 yet? If you have, do you own an AMD Ryzen CPU? Have you seen performance drop recently? Let us know!