[SOLVED] Could 12v rail fluctuating between 12.00 and 12.096 be causing my computer to blackscreen?

[duckstock]

I have an evga geforce superclocked 1070, and it will randomly crash while gaming or running intense machine learning algorithms. All temperatures seem to be fine, the only odd behavior seems to be my psu. It is a corsair hx750 and I using hwinfo i have observed that it will fluctuate between 12.00 and 12.096 within a second, and that this appears to happen often. Could this be the root of my problem?

Fluctuation:

https://imgur.com/a/324mHr7

View: https://imgur.com/a/324mHr7


Specs:

https://imgur.com/a/AuCF4Rp

View: https://imgur.com/a/AuCF4Rp

 

[RememberThe5th]

That +/-0.096V should not cause any issues at all...
The max is 5% for all voltages (expect the negative which can be higher).
Also to add , I would not trust kinda motherboards monitor, I would rather have multimeter to check directly.
Power Supply Voltage Tolerances (ATX v2.2)
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Voltage Rail	Tolerance	Minimum Voltage	Maximum Voltage
PSU Tolerance Table
+3.3VDC	± 5%	+3.135 VDC	+3.465 VDC
+5VDC	± 5%	+4.750 VDC	+5.250 VDC
+5VSB	± 5%	+4.750 VDC	+5.250 VDC
-5VDC (if used)	± 10%	-4.500 VDC	-5.500 VDC
+12VDC	± 5%	+11.400 VDC	+12.600 VDC
-12VDC	± 10%	-10.800 VDC	- 13.200 VDC

 

[duckstock]

That +/-0.096V should not cause any issues at all...
The max is 5% for all voltages (expect the negative which can be higher).
Also to add , I would not trust kinda motherboards monitor, I would rather have multimeter to check directly.
Power Supply Voltage Tolerances (ATX v2.2)
�

PSU Tolerance Table
Voltage Rail	Tolerance	Minimum Voltage	Maximum Voltage
+3.3VDC	± 5%	+3.135 VDC	+3.465 VDC
+5VDC	± 5%	+4.750 VDC	+5.250 VDC
+5VSB	± 5%	+4.750 VDC	+5.250 VDC
-5VDC (if used)	± 10%	-4.500 VDC	-5.500 VDC
+12VDC	± 5%	+11.400 VDC	+12.600 VDC
-12VDC	± 10%	-10.800 VDC	- 13.200 VDC

Okay, that's what I thought. I received this email in response from evga

"..should be delivering a consistent power flow between 11.4 ~ 12.6 volts with no fluctuations that are outside 0.05 volts or rapid fluctuations. This test would indicate that there is a problem with your power supply that would manifest itself in the behavior of your graphics card since it is the component that draws the most power in your system. "

So I wanted to check here, because I wasn't sure how much of that info is to get them out from having to replace faulty cards. I guess I'll have to go pick up a multimeter.

 

[RememberThe5th]

The required would be osciloscope, which can see that fluctuation, but it is quite expensive.
The multimeter is kinda alternative to motherboards sensor to ensure it is PSU's fault, kinda.
For me multimeter and motherboards sensor are kinda double check.

 

[jonnyguru]

using hwinfo i have observed that it will fluctuate between 12.00 and 12.096 within a second

Since it's HWInfo and the readings aren't actually coming from the PSU, they're bullshit readings for troubleshooting a PSU.

Could this be the root of my problem?

Nope.