I've been trying to dig into the matter since I started mining with my 970ftw about a month ago. I can't seem to find a hash rate chart for AMD cards anywhere, but I've found one for Nvidia cards over at yiimp.ccminer.org but they just don't supply charts for AMD which made me question whether AMD cards aren't very popular for the Skein algo. I'm in the market for another GPU for skein mining and have been strongly considering a 1080ftw but I'm open to AMD cards if they are just as good for mining this algo. Any input and info would be awesome!
No one has ever shown me an amd skein mining.
So I don't know.
I do know this nvidia is better at zec then amd is.
and if you mine skein with nvidia you make a little more then you do with zec.
Based on that I suspect nvidia 1080 ti's on skein are tops at the moment.
I can do 920 with a nvidia 1080 ti and use under 200 watts