I was mining @40mh/s since today with cuda miner 2x980 untill today for 10 days but it dropped to 37 mh/s.Is this because difficulty raised ?
I heard 1060 / 1070 cards were unaffected by hashrate drop.
AMD 4xx/5xx cards also suffer from this. For every DAG Epoch, be ready for hashrate drop.
May i ask where did you get that info that amd 4xx/5xx cards are suffered from hashrate drop but 1060/1070 unaffected?