32GiB of ECC, 2TiB NVMe SSD (and an optional 2.5" SATA bay, but I opted for larger battery), 4k screen (although I took the 1080p), and an nvidia m1000 - but the Xeon inside has an iGPU.
oh and it came with linux pre-installed.
I have used the GPU as a renderer and I'm pleased to say that it also worked well under optirun/bumblebee. (although, I'm not a gamer, and this gfx card would not be as good as a GTX 1050 which was contemporary in the XPS line). Although when ramping the system at full tilt (CPU+GPU) the thermal solution is unable to keep up.
iGPU means that my X11/Wayland doesn't break, and since I don't use the power of a discrete graphics card most of the time it works absolutely wonderfully.
My only greivance with this hardware is that the black rubber-soft surface picks up hand grease super quickly-