passing intel_pstate=disable_hwp on the kernel commandline causes the kernel to scale the Core i5-8250U down to 1.6 GHz in performance mode, but that's still a bit off from the 900 MHz it scales down to in powersave mode.
I believe Windows also does not run the CPUs in performance mode by default on mobile devices (but in balanced or balanced performance), I don't know about stationary ones.
Performance governor on laptops should be restricted to gamemode.
passing intel_pstate= disable_ hwp on the kernel commandline causes the kernel to scale the Core i5-8250U down to 1.6 GHz in performance mode, but that's still a bit off from the 900 MHz it scales down to in powersave mode.
I believe Windows also does not run the CPUs in performance mode by default on mobile devices (but in balanced or balanced performance), I don't know about stationary ones.
Performance governor on laptops should be restricted to gamemode.