use the pcpartpicker site. just input your CPU and RAM first and you can sort by cheapest price on motherboard. GPU is compatible on any motherboard with a PCIE slot. just make sure it has a PCIE 3.0 to get the most out of it. when you select the motherboard. make sure you google the manufacturers support site and check on RAM compatibility. pcpartpicker isnt perfect on compatibility checking when it comes to RAM and PSU.
just pick a non-OC board with prefix H/B*** boards. like H110/B150