Windows 11: Patches help AMD’s Ryzen processors on paper

AMD provides a chipset driver, Microsoft a Windows 11 patch. However, the Ryzen processors are still not running optimally.

AMD’s Ryzen processors should run better under Windows 11 thanks to the first updates than when the operating system was released. Microsoft distributes the Windows update KB5006746 to all systems, i.e. no longer just to members of the insider or preview ring. At the same time, AMD offers chipset driver, which has to be installed manually.

Microsoft’s Windows 11 update KB5006746 alleviates problems with the level 3 cache of all Ryzen CPUs, but does not yet completely fix them . Compared to Windows 11, the cache runs with a slightly increased latency, but not as bad as a few days ago with 40 ns and more. Untypically, the measurements with the benchmark tool from AIDA64 vary greatly: Sometimes it’s 11 ns with Ryzen 5000 models, sometimes 16. Under Windows 10, the latency is a good 10 ns.

A larger one The write and copy throughput of the L3 buffer, which in the case of the 16-core Ryzen 9 5950X is still less than 200 GB/s in some cases, is the building position. The cache should actually write at just under 700 GB and copy at a good 900 GB/s. We also measured a reduced read throughput with the six-core Ryzen 5 5600X.

The chipset driver 3.10. 08.506 meanwhile fixes problems with the Windows API Collaborative Power and Performance Control 2 (CPPC2), which the operating system uses to recognize the fastest CPU cores of Ryzen processors. As a result, Windows 11 puts important threads back on the computing cores with the highest clock frequencies. In the case of the 16 and 12 cores, this can make a difference of several hundred MHz, since AMD usually uses two CPU chiplets with different clock rates in these models.

However, the improvements don’t show through in 3D games . On the contrary: The frame rates in the action role-playing games “Shadow of the Tomb Raider” and “Assassin’s Creed Odyssey” decreased by around 5 percent with all current patches and updates compared to Windows 11 without the update and patch. So for the time being, the recommendation to stick with Windows 10 if you use the PC primarily for gaming.

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