I have been wondering for a little while now on what to do about upgrading my GPU. Two questions arise and I cannot seem to find a definitive answer because it comes to a "preference" and I understand that. My questions are:

Do I totally upgrade my GPU (a 1060 to something like a 1080)?

or

Do I get a second 1060 and have a dual GPU setup?

I really just want to continue to play games that are high spec but I am unsure about the pros and cons of doing one or the other.

Any advice would be super helpful thanks!

First off i will recommend a full upgrade. also i recommend checking out what amd has to offer as the 5700 and 5700xt are really great cards for a pretty solid price point.