MMurphy37
 
 
Thank you for the speedy response! I looked at that link, went into my AsRock Z97 Anniversary's UEFI, and saw the +12.00V monitor fluctuate pretty quickly (<1 sec intervals) between +12.144 and 12.091 V. My +5.00V was fluctuation between +4.992 V and +4.968 V if that also helps.

MMurphy37
 
 
Well my coworker actually has two of these same card in SLI, and also owns a voltmeter. He might be able to help. 
 
What exactly do those readings mean? The link says  "a slight fluctuation of up to .05v is generally fine as long as it happens no more than once every 15-20 seconds." My readings are showing a very rapid flunctuation of over .053V, but how accurate is my mobo's monitor?  Is this a standard for motherboard regardless of the refresh rate of the reading? What if my motherboard has a crap monitor?
 
Also, you say that if the problem is the PSU, that it could be damaging other components. How so? Would it be safe to continue gaming until I get a new PSU seeing as I've gone roughly 8 hours without it crashing like this?

demon09
 your bios reading are with in spec but without a load test its hard to know. here is a list of all voltages atx range spec's
+5 ±5%    (±0.25 V)+4.75 V to +5.25 
−5 ±10%  (±0.50 V)−4.50 V to −5.50 
+12 ±5%  (±0.60 V)+11.40 V to +12.60 
−12±10% (±1.20 V)−10.80 V to −13.20 
+3.3±5%  (±0.165 V)+3.135 V to +3.465 
+5 standby±5% (±0.25 V)+4.75 V to +5.25 

EVGATech_GarrettL

MMurphy37
 
 
Well my coworker actually has two of these same card in SLI, and also owns a voltmeter. He might be able to help. 
 
What exactly do those readings mean? The link says  "a slight fluctuation of up to .05v is generally fine as long as it happens no more than once every 15-20 seconds." My readings are showing a very rapid flunctuation of over .053V, but how accurate is my mobo's monitor?  Is this a standard for motherboard regardless of the refresh rate of the reading? What if my motherboard has a crap monitor?
 
Also, you say that if the problem is the PSU, that it could be damaging other components. How so? Would it be safe to continue gaming until I get a new PSU seeing as I've gone roughly 8 hours without it crashing like this?

Whenever you are applying voltages outside of a components specification, there is the potential for damage. This is just a fact, and whether this is accidental or intentional physics cannot be avoided.
 
Fortunately most components are robust enough to handle fluctuations to a reasonable degree, however we cannot be certain of the level of fidelity between the mobo's sensors and the actual rail which means that these readings need to be regarded to have a certain margin of error. 
 
That being said, we usually recommend the BIOS readings over software utilities since it reduces the number of abstraction layers to 'hopefully' provide more accurate readings. Of course this sounds a lot nicer on paper, but in most cases if you are seeing fluctuations outside of the noted magnitude and frequency we can be reasonably certain that there is at least some amount of issue present. 
 
If it's the mobo, then the other system should have no issues and the voltmeter should confirm solid readings. (of course it could be both but I like to think positive )

demon09
 

MMurphy37
 
 
But I'm not purposly applying these voltages, unless you mean the CPU OC? And what kind of damage and to what? 

 
I assume hes talking about falling out side of the atx voltage spec range. which is hard to know tell you do a similar test like sajin linked. the fluctuations do cause some question. my current evga g3 psu sits at 12.096 and 5.010 with no fluctuations. the rapid fluctuations could mean it would drop under load. But they could also be something that is just caused by the motherboards sensors. if your friend has a multi meter you can borrow you can confirm what happens under load