It's a Thinkpad X1 Extreme, with 4K OLED. The primary downside of the screen is that it's rather shiny and reflective in the wrong light. That apparently comes with non-matte screens. In the right light, it's the best screen I've ever seen.

MSI GT76 TITAN (128GB RAM) with 17.3" 4K/UHD and NVIDIA GeForce RTX 2080 / 8GB Screen is at 3840x2160

I use it to render high res panoramic images.

But I know - it not exactly everyone's go to laptop...