fake or not ?
16gb of memory will be too much for a 1170 I would say max 12 gb otherwise it will cost too much
the memory speed looks good
quotes
A benchmark result of the unreleased Nvidia GTX 1170 graphics card has appeared online. As is the trend among all these early GeForce ‘leaks’, the image consists of a phone camera snap of a screen... so its authenticity is questionable at best. Nevertheless, here’s what the latest ‘leak’ indicates.
The image consists of a skewed 3DMark result (22989) , half obfuscated by a benchmark window. What we can gather is that the run was supposedly carried out on a single Nvidia GTX 1170 graphics card with an incredible 16GB of memory. Too incredible, in fact… but we’ll get to that. The GPU was running at 2,512MHz, while the memory bus clock was running at 2,552MHz.
source https://www.pcgamesn.com/nvidia-gtx-1170-3dmark-leak
update
It seems we have a release day on the 1170, 1180, 1160 ,1180+
quotes
GeForce GTX 1180 on 30th August
GeForce GTX 1170/1180+ in 30th September
GeForce GTX 1160 on 30th October
You'll notice a 1180+. We're not sure about it, but are fairly certain that the GeForce GTX 1180: 30th August launch would be a founders edition, and the + very likely is a board partner board, AIB cards always launch later. All this info makes that email sound plausible (but really also could very well be tremendously fake). The email also mentions 21st August for a press conference call, for the partners.
source http://www.guru3d.com/news-story/geforce-gtx-1180-announced-late-august-11801170-and-1160-to-follow.html