What are the best GPUs for mining altcoins? isn't it odd that there are GPUs priced at $1000 and even more but when you benchmark them you'll see that for mining they are not worth a penny 
Mining has almost NEVER had a use for the high-end cards.
They're all about GAMING.
Keep in mind that cryptocoin mining by the standards of AMD is a SMALL market on it's best day - and outside of EVGA and it's backing for FAH isn't even a BLIP in the market for NVidia.