If you have the money go for one with an LGA socket. Otherwise MSI seems to have really good cooling and look for an HK series processor than an HQ. If you go for an older Skylake 6820HK they should hit 4.0GHz easy, if you have a Kaby Lake it should hit 4.0-4.2GHz+ easy on default voltages (YMMV). You'll want the extra overclock to keep the fps up on the 10 series GPUs.
thx all for your answers.
Is there a place/brand that let you build your laptop with the specs you want?
because if I want one with a 6820HK it comes with way more ram/storing space than I need, and if I choose one with lower rams than its only a 6700