KitGuru tried the Nvidia GTX 1080 Ti Founders Edition 11GB
A quote from the article:
Nvidia's Titan X Pascal has been dominating at the top of GPU performance charts for a little over seven months, with the gap to the GPU maker's second-in-line GTX 1080 being a sizeable one. With AMD's high-end competitors still not available for public adoption, the enthusiast market is ready for a GTX 1080 Ti GPU to offer Titan X-like performance at a price point closer to that of a high-end offering, rather than an ultra-high-end (borderline silly-money) one.Nvidia GTX 1080 Ti Founders Edition 11GB Review @ KitGuru