@Mek101 That is relevant to my interests!
One of the laptops I use is HP ProBook 430 G1 with Haswell chip, it's already very power efficient and doesn't spin the fans up on my average usage, even with tiny battery, I can squeeze several hours of life out of it. I'm already using lower refresh rate of 40 Hz (for some reason, this refresh rate was not available for some time, but now I can use it again) to save power, it's great that it can be improved even further 👍