teflon66 :
Ahh of course. If that benchmark above is true, and the 390X is that powerful whilst being not too expensive, I might go with those SLI.
Are there any advantages or disadvantages to having Nvidia vs. AMD cards?
I doubt that benchmark is correct...
In my opinion SLI works better than crossfire, in general Nvidia has better drivers in my opinion.
Nviida generally uses less power and is cooler and quieter.
Many games such as the Witcher 3 will play better on Nvidia cards. " Game Works"
Nvidia cards are better for overclocking...
I'm glad AMD is around, competition is good for the industry.
If the 390x has 8 Gb frame buffer then the card might last longer than the 980 ti.
For example I would rather have the 290x then the 780 ti today because 4 gb of vram is better than 3 however I prefer the gtx 980.