Fan rpm goes to 0 after 30min but still is spinning.

[infowire]

Gtx 1060 rig, just one card that does that with claymores.

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[justchil]

Using afterburner? 

Had similar issue using both.  Had to reduce overclock a bit to fix.

[ZenFr]

Gtx 1060 rig, just one card that does that with claymores.

Only one question : what are your temperatures ?

Below a certain temperature, mosts of cards have a silent mode, whithout fans.
And the temperature varies from one GPU to the other in the same RIG because cards are not all ins the same place/disposition and not the same cooling efficiency.

[pr0ximus]

I had the same issue as well. The problem was heavy over clocking and under powering. Juice it up a bit more and reduce your OC

[gt_addict]

Had the same reduxe the mem clock and been pretty stable for days now.