We know that there is some tough and powerful laptop came in 2017 but tougher and expensive of all of them is Acer predator 21x.
Now its time for specs:
Its has 7th Gen Intel® Core™ i7-7820HK processor which is quite poweful.Its has 64 GB of RAM.It has 2 Nvidia gtx 1080 8 gb each connected with SLI.It has Windows 10 Home pre-installed.Its has Dolby Audio™ 4 Speakers & 2 Subwoofers with 3-way Audio which provide good sound.Its has tobii Eye Tracking and mechanical keyboard.
It also has a curved 4k screen for gaming.It weighs nearly 8.5 kg. It has a numpad which can be converted into touchpad.Its has G sync installed which eliminates screen tearing.
If you need to get this beast then you have to spend nearly 9000 $.