2048 cores

that 3x750ti and that's bad

Yep, hopefully they have improved the architecture SMX, that was they wont need as many cores if each performs better
well it will perform like 3 750ti... with a small memory bus. So basically it will be worst than a 780ti...
I guess for mining it will be like 3x750Ti indeed. Or less. 6x00 for X11 at stock.

For gaming it will be faster than 780 - when both are stock. ANd 970/980 overclock pretty well (at least test samples

)
Could you be more precise please. Which one will be 3x750ti, 970 or 980. If it is 980 then it is total waste.