Futuremark - 3DMark Time Spy
Rendered at a 2,560x1,440 QHD resolution and making use of DX12 technologies such as asynchronous compute, explicit multi-adapter and multi-threading, Time Spy is a forward-looking 3DMark benchmark that hints at GPU potential in various upcoming games.
The price-equivalent GTX 1060 is also faster in the DX12 Time Spy test, but the gap to an older card somewhat higher.
That said, the Sapphire cooler is very good at keeping the RX 570 GPU nice and consistent from run to run.