Just ran across this article talking about the new AMD 500 series cards and thought I would share it, I know there has been a few conversations about performance increases so… read away
Of course the 500 series will not do 1000 h/s, it clearly states that its almost a rebranding of the 400 series except they made a few minimal improvements. Some processor improvements which leads to better clock speeds, cost less and slightly more efficient.
I would hypothesise that an O’C’d RX580 might do 350 to 380
I’d expect 325-330 for the RX580-8GB, tops. The stock clock is only going up 5%, and the memory speed is the same, which is limiting factor for Polaris/Pulse.