At 1150MHz and 2020 Memory (with 0 memory errors), my hynix rx 570 is doing
Eth - 28.45 MH/s
Sia - 485 MH/s
Power in HWinfo and MSI AB around 79 Watts.
It will be higher on wall, going to use a kill a watt switch to get a proper reading this weekend.
That's crazy, I get 29.5 with my 580, samsung @ 2230 memories with 1750 strap.