Benchmarks - Is PowerTOP Tuning Worthwhile For Modern AMD Linux Laptops?
This quick round of testing was with a Lenovo ThinkPad T14s Gen2 featuring a AMD Ryzen 7 PRO 5850U.
Testing happened out-of-the-box and then after running PowerTOP as root and setting all the "bad" defaults to "good".
Before/after various benchmarks were run on this Ryzen-powered ThinkPad laptop while also monitoring the power consumption on battery and various thermals too.
Long story short, the overall battery power consumption changed on the Lenovo ThinkPad T14s Gen2 AMD Ryzen 7 PRO powered laptop when PowerTOP-tuned.
There were some minor improvements to the CPU temperature operating temperature.
Given no measurable CPU power savings difference for this Zen 3 powered laptop, there also wasn't any measurable difference in the performance of tested workloads from browser benchmarks to other common laptop real-world tests.
This largely jives with what I've seen on other laptops in recent times of outside of some niche cases, PowerTOP on modern Linux distributions generally doesn't yield a dramatic difference with modern hardware, thanks to ongoing Linux improvements and more sane defaults by Linux distributions and power management behavior with open-source software generally being less buggy in recent years.