https://www.pcgamer.com/dells-thinnest-alienware-laptop-to-date-packs-a-6-core-cpu-and-gtx-1070-gpu/

Dell today introduced its slimmest Alienware laptop to date, the Alienware m15. Compared to the previous generation Alienware 15, the latest iteration is 17 percent slimmer, 30 percent smaller (volumetrically), and 38 percent lighter.

Those percentages translate to a chassis that measures 0.83 x 10.83 x 14.3 inches (21 mm x 275 mm x 363 mm) and weighs 4.76 pounds (2.16 kg). That's not quite ultrabook territory, but it's not far off either, especially for a gaming laptop. It's much more in the territory of slim Max-Q designs like the MSI GS65 and the Razer Blade, some of the best gaming laptops.