Unfortunately XPS Developer Edition does not support external 4k displays @ 60Mhz like Dell's own P2715Q. If that kind of thing matters to you.
Otherwise I think it a great machine.
Otherwise I think it a great machine.
I'm sitting here now with a gen1 xps 13 2015 pushing a 4k monitor at 4k 60hz.
My xps 15 in work also supports 4k @60hz although needs an annoying usb-c to displayport dongle.