Amph, no offense but I see that you tend to be a bit off with reality in your statements. Nothing personal but let's make some fact checking:
1) the math is there, if you're right with your calculations I donate you 0.025 BTC right now. Proove me wrong please, with real data with the same settings (29MH 1.89 bucks with a 1070 on eth)
2) a gtx 1070 in real, and not vat players shops with REAL availability it's 445 eur, custom ones 460/480 very good ones if not 500.
I could say that I' m a bit experienced in that, I own 31 of them, and 6 to 7 different kinds.. I cannot even remember how many..
Do you agree with these calculations?
palit is at 420 euro on some shop, just check it, palit is a good bet right now for the 1070 so i fail to see why you need to spedn 500 euro
one like i said is doing 400k satoshi per day, then you need to remove consumption, but if you dual mine, the added hash will make it for the consumption
at this point it's like mining etheruem only with free electricity, roi can not be 1 year ever, so no i don't agree, at worse 8 months
Try claymores dualminer with siacoin. (1070)
use -dcri 64. Then you earn around $3 per card (29mhash+700MHASH). $2 on etherum classic and $1 on sia coin.
My undervolted 390's are bether though. 180 Watt for 27+550MHASH. Picked them up on a bulk sale for less than $250
$3 per card is exactly what i'm saying, it's 0.00550 satoshi with a single 1070, my math was right since the beginning