Only GPUs 2, 3 and 7 are slowing down!?

[mensa1984]

Hello,

in my 4 Rigs I am using 8 x NVIDIA 1060 (from different manufacturers) at each rig and overclocked every GPU a little bit using MSI Afterburner (Power Limit 65%, Temp Limit 75, Core Clock +80, Memory +750). I am getting around 24 MH/s at each card when mining ETH.

The problem is, that after some hours or days only GPUs 2, 3 and 7 (GPU range is 0 - 7) are slowing down to around 10 MH/s or even less. First I thought, that I overclocked exactly that cards too much! But then I recognized, that on all 4 Rigs it is the same behavior: Only GPUs 2, 3 and 7 are slowing down from time to time. I thought I could solve this by disabling or lowering OC settings for exactly that cards. But that does not help. The problem appears again after some time.
So I think, that any other card(s) is/are overclocked too much and slows down exactly GPU 2, 3 and 7. But why exactly always that cards? And how can I find out which cards are the problem to lower their OC setting?

Does anyone have a solution for this or maybe the same behavior? Why is this always 2, 3 and 7??

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[tekno]

if you tried stock mem clock settings and it was not worked, increasing power limit should be work.

[mensa1984]

At stock clock settings it works without problems.
But how should I find out which cards could I overclock how much, when always GPU 2,3 nd 7 get slow and not the one which I did overclock too much!?

[BHTeam]

well, start card by card and find the sweet spots for each card.

[mensa1984]

Do you think that higher power limits will allow higher mem clock settings?

[tekno]

At stock clock settings it works without problems.
But how should I find out which cards could I overclock how much, when always GPU 2,3 nd 7 get slow and not the one which I did overclock too much!?

i had similar problem with my nvidia p106-6g gpus on ethos. i have 2 similar rig same gpu mobo only difference memory amount. one of 4g other one 8g. one rig crashes with same config.

after that i applied a little different oc settings on crashed rig. apprx. %3 lower but before that you must be sure psu is enough.
what about memory? i guess 4gb is not enough for 8 gpu you should insert at least 8 or 16GB

[BitTeo]

You try to increment Power Limit , in more case resolving this problem , only with board have problem .

[Ventureum]

I experienced similar issue in the last couple of months. Hope you guys can find a solution.

[mensa1984]

Increasing power limit, did not resolve the problem. It is appearing again.
RAM can not be the problem, cause other Rigs with 8 GPUs and also only 4GB RAM are running without problems.