i have a power color red devil rx470 4GB. just follow this guide https://www.youtube.com/watch?v=OP_zSP2H6ho copy the memory timings for the 1500mhz memory speed to the rest above e.g. 1750mhz. max hashrate i got with 1030core/1900mem is 27mh/s pulling about 100watt

been running more than 12Hours zero problem. temp stable around 55c