Currently I have only one laptop, I use it for everything and it has an nvidia gpu and a 11th Gen Intel® Core™ i7-11800H. I have a mode which disables the GPU which i use when i am out and about. However I want to minimize battery use to a significant degree, so which out of the three should I have on? power-profiles-daemon or autocpu-freq or tlp, which is better for battery performance? I know ppd is configurable via desktop, so i have kde set to power saving mode, but I still want better if possible, is there something more i can be doing with ppd or would autocpu-freq or tlp work better?
Auto-cpufreq only changes the CPU governor based on your preference for load and power source. In my experience you need to disable the intel_pstate driver to see real gains in the powersave/conservative governors. That’s true for all three options.
Tlp can also manage power to radios, ports, devices. Gains are small over auto-cpufreq, and it can be a bit finicky not to lose some part you actually wanted to keep powered on.
I’m not very familiar with power-profiles-daemon, but I think it sets governor and rules for screen/sleep timeout. You’ll probably see better gains without intel_pstate there, too.