I was thinking about doing the same thing, but I read reports from people saying it was a bad idea for a mobile device. If there are people here who are doing it successfully though without the liquid running and causing issues, I might consider it.
It's definitely worth doing even if modding the bios is what it takes. Instead of throttling to 2.9Ghz on my XPS 15 on all cores from hitting 99c, I now get 3.7ghz fully loaded on all cores while riding smooth in the 70-80's. I was able push it further to get 3.9 on all cores at the same...
I found this and it works. Cool
I put it back to normal though. I think the undervolt is good enough for this machine.
I was interested in the Lenovo X1 extreme gen3 later this year, but now that this is out, I think I might get this next. Especially since they recently increased the travel distance of the keyboard, it's still not thinkpad keyboard worthy, but it might just be good enough while everything else...
Thanks guys. My Dell XPS 15 feels much more like a desktop now. I was lucky though, I didn't have to install the mod in this case, all I had to do was reset the bios to factory settings and the voltage unlocked. :D