Mini-PC for Dell U4025QW

I've decided on the U4025QW for my small business but need a mini machine (need it to travel) that can drive it at 120Hz and full 4K resolution. I was hoping the new Mac Mini 4 could work but it sounds like most people aren't able to get max refresh and resolution. Any recommendations for a sub $1,000 mini PC that can handle the U4025QW?