The Nvidia RTX 2080 is officially twice as powerful as the Nvidia GTX 1080
https://www.techradar.com/news/the-nvidia-rtx-2080-is-officially-twice-as-powerful-as-the-nvidia-gtx-1080
Although Nvidia officially announced its Turing family of graphics cards earlier this week, Team Green is only now sharing how the performance of the Nvidia RTX 2080 compares to the Nvidia GTX 1080
In some newly released presentation slides, Nvidia claims the Nvidia RTX 2080 hovers around being 1.5 times more performant than the last-generation Nvidia GTX 1080 in a multitude of games, including Epic Infiltrator, Wolfenstein II and Shadow of War (HDR).