I installed a modded bios on my Clevo W650KK1 a while ago with the intent to upgrade to Coffee Lake at some point.
That point is now...
Grabbed an i5-8400T for a little over $70. It's a 35W 6C 6T CPU with a base clock of 1.7GHz and a boost of 3.5GHz. I'm upgrading from both my Pentium G4560 and i5-6500T; both CPUs I've been alternating between in this laptop.
But in order for 6+ core CPUs to work properly in 7th-gen Clevo laptops, you need to cover two pins with Kapton tape. It's extremely fiddly. It's
technically optional if you don't mind having those two pins potentially burn away.
This extremely blurry picture shows my attempt (as well as how much I scratched up the areas around the pins). I set down a 3.5mm strip of tape in the general area and then tried to carefully cut away what I didn't need with a craft knife.
Got it installed in the laptop...
...and it POSTs!
It seems to work perfectly. After running some benchmarks, the temps seem to max at around 68C. Pretty good for an (admittedly low-power) desktop CPU in a laptop.
Maybe at some point, I'll step up to an 8700K (undervolted and underclocked of course).