1. Run MSI Afterburner and check that "Unofficial Overclocking Mode" is currently DISABLED
Where is this option? I can't find. Settings? First tab? There is no such an option. Latest Afterburner. 15.12 crimeson
Settings -> AMD Compatibility Options
There was no such a section at all ) Until I return "Enable low-level..." from "core" to "user" value. But...
If I set memory clock to 650 on my MSI R9 390 *3 then the hashrate drops to 21Mh from 31.3 ) So, I've switched back to 1100/1500