Why my rig stops after 15 hours ?
I have 4X geeforce windforce gtx 1070

Temp: GPU0: 70C GPU1: 67C GPU2: 59C GPU3: 69C
GPU0: 443 Sol/s GPU1: 445 Sol/s GPU2: 453 Sol/s GPU3: 445 Sol/s
Total speed: 1786 Sol/s
+-----+-------------+--------------+
| GPU | Power usage |  Efficiency  |
+-----+-------------+--------------+
|  0  |    129W     |  3.43 Sol/W  |
|  1  |    135W     |  3.30 Sol/W  |
|  2  |    134W     |  3.38 Sol/W  |
|  3  |    133W     |  3.35 Sol/W  |
+-----+-------------+--------------+

I have a corsair 1200W
MB: ASUS PRIME Z270-A
now power wall is only 615W

power limit at 140W each one
__CORE_OVERCLOCK_1=150
MEMORY_OVERCLOCK_1=580