I run 1080TIs. There are a sizable amount of "old" AAA SLI games that require two 1080ti's to run 4K 60Fps at high settings.. ie. Witcher3,Wildlands,GTA5,Dying Light,MiddleEarth... I have not finished all those games expansions. Sadly I still need my two 1080ti's even though they are not supported in 99% of current and likely future games. I doubt a single 2080 will be enough to play those games at 4K60fps. So, my next big question is if Nvlink will, or can, be used for multiGPU gaming increase. ???
Big unknown with no answers I can find.