I already have an i7 4790k and a gtx 960 4gb. I want to update my gpu and I have 3 cards, I can get any of them, the issue is my psu. I have an evga 80plus white 500w (I know it's trash). Can this psu run a 1070, 1070ti, or a 1080. I will be upgrading hopefully soon, please help if you can, thanks!