Most Skylake motherboards (microATX or full ATX) use DDR4. You should be a bit more specific with your recommendation, if you're referring to one of the few DDR3 Skylake motherboards or if you're referring to haswell motherboards (and compatible CPU too).
Edit: also a GTX 1060 is worth considering. RRP is $250 and it's supposed to be 15% faster with 75% less power draw, if you believe the marketing.
Yea I should've been more specific but I was referring to Haswell boards which are quite cheap now. The Haswell CPUs have dropped price a bit as well (at least here where I live).