I started mining ETH yesterday, I have an MSI R9 390. My msi AB settings are -50mV core voltage, stock memory and aux voltage as I cannot find any info on those. I have max power limit, 1150 core clock, 1250 memory clock that doesn't apply(It stays at 1500, I read it's a 15.12 driver problem but I don't wanna change those drivers as I downgraded because they're known to mine better) and 100% fan speed. I'm using -50mV core voltage inspite of the fact that I have free electricity because my temps are at 83-84 after a 12h mining session. My hash rates, according to ethminer, are interchangeable between two values; ~34Mh/s and ~29Mh/s, I don't know why. My pool recorded 31.2 Mh/s 6 hour average. I am undervolting to keep the temps below 85 celsius. How can I abuse my free electricity more?
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