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One of the patch series that sadly was not ready in time for the Linux 6.10 merge window and thus will need to wait a few months for at least the next kernel is enabling AMD Fast CPPC support for Zen 4 processors
While AMD Zen 4 processors whether it be the Ryzen 7000/8000 desktop/mobile series or EPYC 8004/9004 series server processors are already performing very well on Linux and with great power efficiency against the competition as shown in dozens of Phoronix articles at this point, it turns out there's been a minor power/performance optimization left untapped yet under Linux for select Zen 4 processors
For AMD Zen 2 and newer systems making use of the modern AMD P-State driver on Linux for CPU frequency scaling, ACPI Collaborative Processor Performance Control (CPPC) interface is being used
One of the features sadly not having made it in time for the Linux v6.8 kernel merge window is the AMD P-State Preferred Core support