Have you tried 1150-1190core and 2250-2275memory, should lower the power consumption to around 80-100? 2200 Is usually the max for those cards, you are lucky to get them that high stable. I have mined Eth for almost 2 years now and i have noticed that you dont get the most shares because your hashrate is higher, lets say you get 31mhs on a pretty aggressive overclock and than lower the clockspeeds (30mhs) to get it more stable and that way get more shares. I liked the post so upvoted :)
So after 21 hours of mining at a slightly lower settings I have some data to report. after 39 hours under the setting above in the article I was getting 1.856 shares/min (63 Mh/s)....and after 21 hours at reduced settings I'm getting 1.870 shares/min (62.5 Mh/s)...which is better! The epoch is higher now as well (which increases difficulty, albeit slightly). So you may be on to something! I reduced the core clock to 1300 and memory clock to 2250 for each card.
Do both cards get the same amount of shares? I was thinking of the problem when it goes to mine devfee. I dont remember if you could see how many shares every card is getting on Claymore v10.0
great question...I'll try to look through the history to see if each are reporting shares about the same rate.
I have tried lower power consumption before (as low as 1050 mhz) and it seemed marginal the amount I was saving in electricity...I only pay .07 for electricity so the high hashrate seemed better. I'll tinker around with it some more. I just got a Watt reader for my electrical outlet so I can see exactly what the cards are drawing vs what the software is reporting.... I do get the sense from my mining pool that I'm not reporting as many shares as my hashrate would suggest...so I'll try lower settings for awhile to see if I can get more shares/hashrate. thanks for the suggestions!