Would this system be powerful enough to run RetroArch at 1080p with shaders???..
Generally speaking yes, shaders vary a lot on their requirements but it should be fine
It has Intel HD 4000 graphics, so don’t expect it to handle the heavier shaders like CRT-Geom.
Got the device today and seem to run everything flawlessly, even PSX games with Maister’s new CRT glow shader