17 R5, upgrading video card and ram

I have the 2018 alien ware 17r5 with a gtx 1060 gpu and 16 ggb ram. Wanted to know if it could be upgraded to a gtx 1080 or even if it can run a gtx 2080.and if so would I have to upgrade the ram as well or could it be done at a later date of upgrading gpu.