how can even someone think about this?
like really?
1070 10% above 2years old GTX980 for 400-450USD?
WTF.
It should be:
GTX1080- +35% faster than 980Ti for 500-550.Just like GTX680 was for 499USD vs GTX580.
GTX1070- 10-15%faster than 980TI for 400USD.Just like GTX670 was for 400USD vs GTX580.
GTX1060TI-on par with with GTX980TI for 300USD.Just like GTX660TI was vs GTX580.
680 wasn't 35% faster than a 580 (only
about 25%), and the 580 didn't cost $650 like 980 Ti.
670 was $400 as you said, but the 570 was only $350, so a price hike of $50 or ~15%. So the situation isn't really comparable.
If you want to draw parallels to the 500 to 600 series transition, then this is what we would see:
1080: 980 + 25-30% (980 Ti + 0-5%) - $500
1070: 980 +20% (980 Ti -5%) - $400
1060 Ti: 980 +5% (980 Ti -15%) - $300
The bigger question is, how can someone think like what you posted? You do know that Nvidia is a company whose goal is to make money right? They don't care what we consumers may or may not consider good value, they care about maximizing profits. So trying to make prediction based upon what you personally consider good value is just plain silly. The question is what would Nvidia do, not what would you do.