Hashrate Mystery

[jediminer]

I've got 3 gtx 1070s running. 2 get rate that one would expect (25 stock 30 OC) and 1 gets about 10-15mh less and I can't fathom why. Was pointed to these forums...hope someone can help. Win 10, creators update, cuda installed, current drivers, claymore 9.5 dual ETH+SIA

http://imgur.com/a/nwsDf

I've also noticed my hashrate fluctuates like crazy on all 3 cards, some times I'll get 30 on the first two cards, then it'll drop down to 17

Any insight would be really appreciated

[Cereberus]

I've got 3 gtx 1070s running. 2 get rate that one would expect (25 stock 30 OC) and 1 gets about 10-15mh less and I can't fathom why. Was pointed to these forums...hope someone can help. Win 10, creators update, cuda installed, current drivers, claymore 9.5 dual ETH+SIA

http://imgur.com/a/nwsDf

I've also noticed my hashrate fluctuates like crazy on all 3 cards, some times I'll get 30 on the first two cards, then it'll drop down to 17

Any insight would be really appreciated

The fluctuating is I would say normal when you overclock you cards, I see you have +700 temperature and +175 core clock. If most of the time is staying on 30 mhash and just some times it goes down to 17-16 mhash I would say this is normal. It happens to my GTX-s 1060 too, I have overclocked them +65 core clock and +750 memory, power limit 73%. They are stable most of the time but sometime the hash rate in ethereum goes from 22.2 mhash to 14 mhash for a few minutes then back up as they should.

[jediminer]

Yeah my first two cards are stable for the most part getting 30, it's the last one that is consistently lower. Stock on that one is 18 vs the other 2 at 25. Overclocked I'm lucky to hit 20-25 range. It's just about constantly 10mh lower for some reason