I'm confused... how did they get 11GB of RAM and 352 bits? really weird numbers. it seems memory speed will be at ~11.18Gbps
unless the ROPs are the bottleneck, at 4K the 1080 Ti should be almost identical in performance (+- 5%) with factory OC models from OEMs being what people should look for.
An interesting factoid about the Pascal line: the GP102 has not, to date, been released to aftermarket GPU makers. There are no aftermarket versions of the Titan XP - which is a change from the original Titan X, which did have aftermarket versions. So the cooling and clocking solutions for the GP-102 are stock nVidia, thus far.
Another interesting factoid: nVidia hasn't been able to meet demand for Titan XP, even given its ridiculous price. They can't make GP-102 cards fast enough.
Will either of those factoids change with the arrival of the GTX-1080 Ti? Maybe. But at this moment in time, it's fair to say that there are still unanswered questions about how nVidia will market the GTX-1080 Ti . Don't assume that MSI or ASUS or the other aftermarket guys will have tweaked GTX-1080 Ti GPUs for sale. We don't know that.
Meantime: even the Titan XP isn't adequate to get us to 60 FPS at ultra graphical settings for 4K monitors. The 1080 Ti isn't going to do that for us, either, and I seriously doubt that AMD's Vega is going to change that equation. The sweet spot for high-end gaming remains at 1440p with this generation of GPUs.
People with 1440p G-sync monitors and a GTX-1080 or even a GTX-1070 are sitting pretty; they'll get killer frame rates at ultra graphical settings. And that leads me to pose a question: who needs a 1080 Ti, exactly? Cheaper GPUs are plenty good enough for 1440p gaming, and people trying to move to 4K gaming aren't going to be any happier with the 1080 Ti than they are with a Titan XP, performance-wise. It can't do that job, unless you downgrade the graphics settings on your games or are happy with max mid-50's frame rates.
Therefore: the only item of interest in this article for gamers is the price reduction on the GTX-1080. That is a really nice development. WIth that card and a 1440p monitor, you'll get insane FPS at ultra graphical settings for just about any mass-market game out there, and the GTX-1080 is suddenly a lot more affordable. Excellent.
Now there might be demand for the 1080 Ti for other uses. The price point is much more attractive than is the case with the Titan XP, while the processing horsepower isn't much diminished. People using GPUs for artificial intelligence development might perk their ears at this announcement; same with people working on self-driving cars or setting up supercomputer clusters based on nVidia's GPU architecture. Those people might find the 1080 Ti very appealing for their various purposes.
Gamers, not so much. We don't need the GTX-1080 Ti for 1440p, and it isn't going to solve 4K gaming. For 4K, we'll have to wait for next-gen GPUs. (And larger monitors, too. 27" 4K monitors are way too hard to read.)