Hi, can anyone tell me which card is currently the best for mining in terms of h/w. Currently I have 2x rx470 4gb and 1x hd 7950 and I get 615 h/s with 440w consumtion. I have them all undervoltet. If stock, rig is working at 540w. I have opportunuty to get msi rx480 4gb for 220€ but am not shure to buy it.