Windows 11 and AMD Ryzen processors: performance down with the 1st update

AMD has already warned of a performance issue with its Ryzen and Windows 11 processors, and now the first OS update is making it worse. The update in question was released yesterday as Patch Tuesday.

Windows 11 and AMD Ryzen processors: performance down with the 1st update

Performance issues between Windows 11 and AMD Ryzen processors

TechPowerUp measured the L3 cache latency on the AMD Ryzen 7 2700X processor at around 10ns, and Windows 11 increased that latency to 17ns. This situation worsened with the October 12 update, which increased the latency to 31.9 ns. This is a big leap that is not good news for users.

There is at least one good news: the “real” patch to get back to good performance will (normally) be released next week. AMD and Microsoft are working together to make sure everything is going to run smoothly.

Last week, both groups reported that Windows 11 can triple processor L3 cache latency, slashing performance by up to 15% in some games. Another issue is AMD’s preferred core technology, which moves threads to the fastest core of a processor. AMD indicates that this bug could impact the performance of CPU dependent tasks.

You know what to do if you have a Windows 10 PC and an AMD processor: wait a little longer before updating to Windows 11.

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