I bought two Saphire RX 580 Nitro+ 8GB  (standard, not limited edition) with Samsung memory. I have Windows 10 and installed drivers Beta for Blockchain Compute 23 Aug. Also, I modded strap in bios, -dcri 6, claymore 10.3. In MSI Afterburner 1100/2150 and my results are about 29.6 mh/s per card. Power consume from wall metter about 380 w. Can I get better results with same or lower power consume?