The chipset driver applies to AMD chipsets WRX80, TRX40, X570,
B550, A520, X399, X470, B450, X370, B350, and A320, and Restores
intended function and behavior of UEFI CPPC2 (preferred core) in
Windows 11 build 22000.189 (or newer) on AMD processors.
AMD has said the UEFI CPPC2 might be more noticeable on 8-core
chips that operate over the 65 watt TDP rangeâ€”high-end Ryzen 7 and
Ryzen 9 chips, basically. After downloading driver 3.10.08.506 and
installing it, an AMD system with a Ryzen 5000-series chip should
report version 126.96.36.199 in the Windows 11 Provisioning Packages
For Ryzen 2000- and 3000-series chips with the 3.10.08.506
driver installed, Windows 11 should have the AMD Ryzen Balanced
power plan selected and active in the Power Options interface.
The fix should help address early performance issues with
Ryzen-based systems on Windows 11. Like Intel, AMD marks certain
cores in its CPUs that are capable of hitting slightly higher clock
speeds than neighboring cores. Windows 11's inability to see those
cores could create a slight performance regression by running on a
core that runs 100MHz slower.
You can download the driver from AMD and also read
the support note.
This is one of two issues with Ryzen CPUs on Windows 11, with
the other one being far more serious. In that bug, the L3 cache performance of Ryzen 5000 chips is greatly
reduced. Microsoft and AMD have since found a solution that is
being tested by Windows Insiders, but it has yet to be pushed into