I currently have a Gtx 1080 with two monitors connected to it and a third connected to my motherboard would it be worth getting a hdmi to display port so i have all three connected to my GPU?
You should keep the monitor connected to he motherboard as Keeping the monitor connected to the CPU will make only a slight increase in temperature but not huge amounts. and it allows your GPU to render better rather than having it support multiple monitors at one given time.