I am new in this...I am active on market place for about three months and now I want to start mining. My psu is 735W for now and when I grow up my rig I will replace it with some other psu of 1000 or 1200W. Is this psu good enough for this two cards? I hear from people that is AMD 570 is good for mining etherium and because of that I plan to mining ether. Can I mining something else to earn better profit with this rig and cards?