1. Set the power limit to desired level
2. Increase core clock gradually until it's no longer stable then back it down a little bit
3. Increase memory clock gradually until it's no longer stable (or until your hashrate levels off) then back it down a little bit
BOOM done
You may have to do this for each algorithm
First of all thank you for your comment
So that's it? i saw people go upside down like -20 on memory clock so they can get more hash power !!
I am using Nicehash which is mining on three different algorithms automatically "Equihash\Lbry\Lyra2REv2" what should i do in this case?