problem with 7xgtx1070

[minerek]

Hello,
Can anyone tell me why my GIGABYTE GTX 1070 EXTREME graphics cards have strange GPU power?
OC is only on +100 MC.
My GTX1070 Zotec operate at + 600MC without a hitch.
Is it possible that this is a factory defect? Or too big OC?
But with OCs at + 500-600 MC cards should work well.
The attachment is scren with settings and a graph of POWER GPU work that jumps like silly
I am using for OC only MSI Afterburner.
Some of the cards are on the memory of Samsung and others on the other. P
I'm on windows 10 with all updates. The card drivers version is 384.

http://i64.tinypic.com/jb0fbp.png

[minerek]

#up

[PallMall]

#up

Your core clock is too high - for ETH you don't need it. Set core clock somewhere at 1700 and add + 500 to memory.