Njoy Woden 650w 80+ Gold.
3.3v: 15A
+5v: 13A
Combined wattage : 114w
12v+: 43A
Wattage: 516w
That unit is basically a bald faced lie. It's an old, group regulated design with sub standard rails for a 650w psu. It would be lucky to rate as a 500w psu, most probably rank as a 450w Gold at best. And you wonder why it's such a good deal. By comparison a Corsair RMx 650w Gold is 25A, 25A, 54A.
From the OP, you have the choice of a 1070 or 1060. Personally I'd sacrifice a little on the gpu and go with the 1060 and bump the budget for a decent psu, because that njoy is a piece of junk and I'd not trust it with an expensive gpu like the 1070.
The psu is the single most important component in any pc. By a wide margin. You can sacrifice any other piece but should never sacrifice on a psu. Bad psus will lead to bsod, damaged components, shutdowns and fires. Yes, fires.
Go for the 'good deal' if you want, but when the gtx1070 and mobo and psu fry due to overloaded, spiked, lousy or dirty power outputs, you'll have no one else to lay blame on other than the idiots who gave it 4.6 stars for a cheap price, fast shipping and it worked. Oh, and the fancy yellow fan that looks great compared to the ordinary black fans.