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AMD Enabling "Fast CPPC" For Even Greater Linux Performance & Power Efficiency On Some CPUs
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
I haven't seen any public list of what current Zen 4 processors support Fast CPPC, but given the kernel patch comments it's at least found with select Phoenix APUs like the Ryzen 7 7840HS. Any performance and power efficiency gains are always appreciated though a bit surprising it's taken until now to see this "fast CPPC" support emerge for the Linux kernel. This patch series is where the AMD Fast CPPC support is currently out for review before being mainlined in the upstream Linux kernel hopefully in the near-term for further enhancing Zen 4's performance and efficiency prowess.
Or read this on Phoronix