Microsoft yesterday released the first cumulative update for the new Windows 11 operating system. According to TechPowerUp, this update only exacerbated the previously reported high L3 cache latency on AMD Ryzen processors.
TechPowerUp previously reported that the Ryzen 7 2700X, with a typical L3 cache latency of 10 ns, increased its L3 cache latency to 17 ns when upgrading to Windows 11. After installing the Windows 11 cumulative update released by Microsoft on October 12, the latency has nearly doubled to 31.9 ns.
Earlier it was reported that AMD is working with Microsoft to develop updates that should address issues with Ryzen processors in Windows 11. AMD announced yesterday that a patch to address an issue with the UEFI CPPC2 power plan will be released on October 21st. However, some consumers may receive it earlier. The details were not specified, but, apparently, the company means its corporate clients by these consumers. The L3 cache lag update will be available via Windows Update on October 19.
If the rumors of a fast-approaching 12th Gen Intel Core processor announcement in late October are correct, then AMD has very little time to fix these issues. Reviewers will be using Windows 11 to test Alder Lake processors, with AMD Ryzen processors also being re-tested on Windows 11, so AMD needs to provide the reviewers with the necessary updates as soon as possible.
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