I'll upgrade my PC to enable to connect a 4K display. It's not for gaming, i need space on desktop. I did a quick search on web-sites of some well known mainboard manufacturer, but seem's that no one have a board in size of MATX with DP 1.2 available to drive a 40" monitor at UHD resolution at 60Hz. There is one board from msi with FM2+ and DP, but the specs say that DP supports up to 24Hz only.
I know that the CPU have to support that resolution as well, but the planned A10-7870K will AFAIK do it.