I haven't bought anything yet, but I was looking at motherboards (This one in particular http://www.newegg.com/Product/Product.aspx?Item=N82E16813157641&cm_re=h170-_-13-157-641-_-Product ) and I noticed something called memory standard. This one states that the memory standard is DDR4 2133. Does that mean I have to have DDR4 2133? I'd like to keep my current sticks, 2x4 DDR3 1600.