What PSU should I have? I currently have a 650w
Which brand and model exactly?
Zotac 1070, which I want another for sli.
I believe he means PSU.
Evga g2 gold
Yes 650 EVGA G2 would work fine. As long as your not using something like a 8 / 10 core Heavily overclocked CPU and hammer it with heavy synthetic stress testing.
I'm using i5 6600k Oc to 4.1 ghz. Is that okay? Also would it be fine to over click the GPU's too? *overclock
What do you think Radox-0!?!
Also, I know I can use a different brand 1070 card since they have the same ship set but which cards have the same height so I don't have an issue with the high bandwith bridge connecting?
Some cards have a custom PCB and are thus wider then other models. Only reference boards would consistently work with one another as they use the same measurements. For aftermarket cards with custom PCB's you will need to double check the width.