I am running 5 rx480 nitro+ 4gb cards on a h81 pro btc board. What I am concerned about is the amount of incorrect shares I get. Within 24hrs I had more than 250 split between 3 cards.
They are running modded bios with 1625 straps copy, at 1850 mem and 1050 core clocks, at -90mV and +20 power limit. The has rate hat I am getting is 27.5 MH/s per card. Power consumption off the wall is 670W.
I did reduce the difficulty on some of the cards to 6. That kept the same has rate but lowered the number of incorrect shares a bit. If I keep it mining for more than a few days, the effective hashrate drops significantly, and I am forced to restart the rig, so it gets back on track.
My question is, should I be worried about the number of incorrect shares? How much is too much, and can I do anything to increase the effectiveness of my rig?
Thanks