I would think that the limiting factor would be ram, and the 7k has enough

but with the flipidy flip flop that is "the entire video transport industry" maybe old dvi tops out, there was / are 3 dvi standards out there course the newest, which would be on your monitor is dvi-d which handles 1080p and probably more

honestly I cant tell a difference tween the old analog vga and digital systems till past 1280x1024, which is where my monitor is sitting on analog nice n clear, vs my wifes 1600x1060 (or whatever) is quite fuzzy over analog