13thmonkey :
Roland Of Gilead :
well, if you want best performance the 1080. If you want a cheaper GPU within 10% of the 1080 get the 1070ti.
Depends on what res monitor you have, what games you play, and what the rest of your system specs are to determine which would be more useful and give you better results, or at least your desired results.
The 1080 is about 20% faster than the 1070. And lets say the 1070ti is about 10% below the 1080 (it's hard to extrapolate without actually testing the card ). Unlike Kevin, I don't think it will be similar performance to the 1080 otherwise Nvidia would be cannibalising their own sales of the 1080. So a 10% difference between the 1070ti and 1080 seems about right.
It'll be closer than that, BUT it won't boost as high and it won't OC, so stock to stock the difference is small, but potential to potential is much much higher.
Well, there's roughly 10% less CUDA cores, so it would seem about right for the difference, perhaps you could have a +/- 2% difference for clockspeeds or whatever, but on the same architecture it won't be as close as maybe your suggesting. And like i said, why would Nvidia have a card that's close to the performance of the 1080, only to destroy sales of the more expensive card. But we we'll just have to wait and see I guess.
With all of that said, lets be clear here. This is cynical from Nvidia. It's a release of a card purely to beat out Vega 56 by a small amount, and hopefully garner sales.
From the OP's point of view, without knowing his system, res or games he's playing having the vanilla 1070 might actually be cheaper and perfect for his setup.