vacationsite.blogg.se - Nvidia power management mods

#Nvidia power management mods drivers#
#Nvidia power management mods driver#
#Nvidia power management mods free#
#Nvidia power management mods windows#

Or disabling nvidia gpu (and not having offload) when it is not needed - since you have no powermanagement when dgpu is enabled. Some laptops are borked even on newer chipsįyi you're probably want to have prime render offload for wayland games than not due to higher fps, so you're stuck with either running in hybrid Upd added some workarounds to decrease power usage or increase cpu performanceĭynamic power management on 7th gen intel and pascal is still not supported(in 470)

#Nvidia power management mods drivers#

What could be the reason? Is there something wrong with nVidia drivers for both Windows/Linux? Is there some specific CPU component that is activated when dGPU is running?ĭepending on laptop manufacturer it might have hidden bios tab, but you dont really need it - bios tdp unlock will do Somehow turning dGPU on (no matter of the usage) causes high CPU package power consumption (thus leaving to lower frequencies when CPU is loaded). Power of the Core/IA/GX were almost 0, while package is 5-12W when nVidia enabled.Īccording to all findings the issue is not related to the OS/GPU.

#Nvidia power management mods windows#

Note: I checked power consumption on Windows on idle. So on Windows the logic is the same as Linux - the faster the GPU runs, the lower CPU's package power is. If any app starts using the nVidia GPU then the IPPC go up to 12W. The difference with Linux is that on Windows when no app is using the nVidia GPU then it is turned off thus resulting in IPPC <2.5W. The faster the GPU runs the less affect it has on the CPU thus the CPU package power consumption is reduced and vise-versa - the slower the GPU runs, the more power CPU drains. In any other case the IPPC is more (up to 12W). When the GPU is using P0 (max performance) then the IPPC is 5W. The answer was in power states of the GPU (P-states). Later on I tried to find why the IPPC is in so broad range - from 5 to 12W and how it is connected to the GPU.

Using "performance" mode in Prime results in using ONLY nVidia gpu.

No matter how many processes are actually using the nVidia - it is always active! In this case IPPC is ~5-12W. In this case both GPUs are always active.

Using "nVidia on demand" mode in Prime results in using iGPU unless explicitly selected nVidia.

Using "Power Saver" mode in Prime results in using only iGPU and completely turns nVidia off.

Let's focus on idle package power consumption (IPPC) of the CPU. After a lot of tests I concluded that the situation is the same both on Windows and Linux. All said above is true, expect one thing - the OS. The case turns out to be even more interesting. With integrated GPU the CPU was running at 3.0GHz/~87 With nVidia - 2.7GHz/~82 anyone have а suggestion or am I missing some kernel setting? I run several more tests by switching GPUs/X11Wayland, but the results were always the same. In this case the results were identical to performance mode. Then I tried balanced mode (nVidia gpu only on demand). After the restart everything was as before. That's why I decided to switch back to integrated GPU. I confirmed the results by running several tests. I run the stress test again and for my great surprise the CPU stabilized at after few minutes.

#Nvidia power management mods free#

I thought that this will free the cpu even more and the clock speed should be at least equal or even higher than initially measured. In nVidia control panel I selected to use performance mode (only nVidia gpu).

#Nvidia power management mods driver#

It was expected result so nothing new here.Īfter that I installed nVidia driver (470.x). I used Prime95 to stress the CPU (using AVX2).