I have also seen similar problem in a recent build with 4 MSI 580. Same mining voltage and clocking settings draws ~550W from the wall in Win 10, while in SMOS wall power draw is ~800W.
I do notice that when set for 1180MHz core clock, that's exactly what the miner runs on in Win 10. While in SMOS, the status monitor shows the core is actually running around ~1260MHz.
It is seems the undervolting and clock setting are not working with some cards.
undervolting is not working for my rig? in windows i set each rx 470 for 825mV. work fine. 920Watt on the wall. but here i set undervolt to 825 but the rig uses 1250Watt shows that core voltage is not working.
any reason?
sapphire rx 470 mining edition Elpida memory
any help?
Please try with this image:
http://download.simplemining.net/simpleminer-RX-v1118-17.30-dagfix.img.zip