1070 is not enough for 1440p any more. I know, because I had a heavily overclocked Titan XM and with stuff like Deus Ex, Quantum thinger and all that it was struggling at 1440p. Even the last DLC on Fallout 4 was going into the low 40s. Not the end of the world, but yeah I like to have more power on tap.
The 1080 may well fill this void. I don't know, I didn't replace with a 1080.
But yeah, 1070 performance now is 1080p only really. Which is fine, so long as it is cheap, but Vega screams expensive to me.
It's not really too little but it is far, far too late. Far too late, not even anywhere near when it was actually needed (the last year Nvidia have gouged and we desperately needed alternatives etc).
I seriously, seriously can't tell you guys how god damn close I was to pulling the trigger on a PS4 pro. Seriously it was in my cart and everything on Amazon, and I pulled out at the very last second and bought a new CPU and mobo. But yeah, it was *that* close.