I mine ETH, I tried SRB on one RX470 8GB and got 0,4 MH/s less then with PBE...

I'll try your strap, it's for 1500-1625-1750 and 2000 ?

When I install the latest driver, I have to use the patch so it seems, they are already modded. I don't have the original BIOS to mod unfortunately. What should I do ?

Getting 28,15 1950/1050 900mV