I have the 3456x2160 OLED model.
I had some trouble with the power consumption in general. It is well-known that the OLED model consumes much more than the LCD, however I was able to reduce the amount to a point I can comfortably use it for several hours.
By default it used up to 18-20 W at peaks and I reduced it to ~5-6 W idle, ~10-11 W at YouTube and ~13-14 W max.
Compared to the XPS 13 9315 with a 1920x1200 display, which uses 2-3 W idle, 7-8 W at YouTube, 16 W max, I am happy to trade off the much better display for some battery life. It is close though, because the 9315 is the only Linux laptop I own which can almost last as long as my MacBook Air, and I like that very much.
Also, the less input lag on the OLED display is noticable to me.
Make sure to install these to have intel_gpu_top and intel_gpu_frequency available.
sudo pacman -S intel-gpu-tools intel-media-driver libva-utilshttps://github.com/deinstapel/cpupower
sudo pacman -S cpupower
systemctl status cpupower.service
systemctl start cpupower.service
systemctl enable cpupower.servicegovernor='powersave'
max_freq="2.4GHz"
In powersave mode the fans don't turn on on 100% CPU on all cores, even after over a minute.
This is great.
The only downside: I couldn't find a setting to limit GPU frequency. But for my daily YouTube consumption it doesn't drain much, anyway.
https://github.com/erpalma/throttled
Not using it anymore.
Not using it anymore.
I use tlp to limit the CPU and GPU frequencies.
Reducing the GPU frequency helped a lot to save some power on YouTube videos.
If you play games you want to increase it of course.
sudo pacman -S tlp
systemctl status tlp.service
systemctl start tlp.service
systemctl enable tlp.serviceTLP_DEFAULT_MODE=BAT
TLP_PERSISTENT_DEFAULT=1
CPU_ENERGY_PERF_POLICY_ON_BAT=power
INTEL_GPU_MIN_FREQ_ON_BAT=100
INTEL_GPU_MAX_FREQ_ON_BAT=400
INTEL_GPU_BOOST_FREQ_ON_BAT=500
CPU_MAX_PERF_ON_BAT=40
CPU_BOOST_ON_BAT=0