8x 3070fe keep crashing at low OC

Nvidia Cards
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Hi folks,
i have a 8x 3070 founders editions Rig wich is crashing at memClock 1700. It is stable at 1600.
Now all cards run at 57,6 mhs - all others 61,5.
All other Cards in other rigs 3060ti, 3070, 3080 are stable at optimal OC (2500 - 2800)

i tryed different miners lol, nb, pm, trex… all crash.

1500w PSU is strong - 1176w needed, PL 125, core 0 or -200 - all setting wich works for all my rigs.
Could it be wrong cable on the risers? I testes different Nvidia drivers - latest OS version

I have no idea what is happening.

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In case you havent solved your problem by now try
1100 / 2200 / 60% / 0.
And also you should use at least 1650w-1800w.
newer ewer you more than 80% of psu capacity.
I do think that you should use stronger psu or additional psu.
8×150w + mobo and other little consumers = at least 1450w. So i think you are makeing problem with psu.
let me know if you solved your problem.

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