Hello, Today while gaming on my system, my ups shut down and started showing overvolt. I have had no issues with this ups and have had it for about 3 years or so so fairly new. I thought may just be a spike but it did it again after I got back into the game.
 
I started doing some research on this and found out that my power supply maybe going bad? I have the powersupply thats listed in the subject line. My +12V is hovering around 10.032V according to hardware monitor pro and will dip down to 9.944V also. I am not up on power supply's but I remember reading something that the +12V should not flucuate below 12 very much. 
 
So question is, do I have a power supply going out, or a bad UPS?
 
I've also noticed that since I put in my new graphics card It will power up and then drop down in the AMD software.
 
Full Specs are below for System
 
Hopefully someone can shed some light on this.
 
EVGA X299 Dark Running newest bios
EVGA SuperNOVA 1300 G2 Power Supply
Intel Core i9-10940x running at 4.5GHZ
Corsair 32GB DDR4-PC 3600 running at XMP Settings
Gigabyte Radeon 6800XT reference board
Mushkin pilot-e 1tb M.2 NVME SSD Boot (On motherboard)
Mushkin pilot-e 1tb m.2 NVME SSD WoW Drive (On Motherboard)
ASUS Hyper m.2 x16 pcie card with 4 HP 1tb m.2 SSD in Raid 0 for games/storage
Anidees AI Crystal Pro RGB Full Tower Case
Corsair H150i 360MM AIO for cooling CPU
12 Anidees tessaract duo 120mm fans for cooling case.
 
 
 
 
 

Ok, plugged into wall, +12V is still hovering around 10.120 on hardware monitor pro

Ok, tried brand new cables to video card and different spots on the psu. Still hovering around 10.120 on the +12V,
 
I'm going to swap my old gtx 1080 in and see if that makes a difference in the voltages or not. I'll post back in a bit cause I DDU can take a minute to clean everything off.

So, I put the GTX 1080 back in, loaded up the current driver for it etc. Voltage is exactly the same on the +12V, 10.120 to a dip of 10.032 
The cpu is plugged directly into the wall. Should I plug the ups back in and see if it does it again, or is the consensus I have a bad power supply that needs to be RMA'd?

Yes, the only thing I changed just now was the gpu. It's out of the picture and put the old faithful GTX 1080 back in which has been a workhorse till last month. 
 
The PSU cables came out of the bag that my power supply came with, they still had twisty ties on them lol. I removed the old gpu power cables and put the new ones in different spots that weren't being used. So I'm thinking RMA time. Thank god for EVGA 10yr warranty on these things. 
 
Any other advice before I get ready to tear this all down?

It doesn't have a display, just lights.

Well I started the process, so I'm sure when they all get back in the office on Monday I'll have it approved and get it shipped off this week. For now I will pull my 750 watt out of my other build and use this. 

Inaccurate software reading most likely.

Multimeter (best reading possible)
Bios reading (second best)
Software readings eleet, hwmonitor, etc. (worst)

ok, put the 1300 G2 back in. Bios shows solid +12V. I have everything at stock settings currently and gamed for 2 hours straight on it with no issues. At this point I'm going to cancel the RMA and see how it goes, ill put my overclocks back on this week and see if that does anything to change the situation. At this point I have to believe HW Monitor is not showing the correct +12V and going to believe the bios. Thanks for all who helped, I'll post back here later this week and update on overclocks.

ok, set the overclocks back up on the CPU and GPU. Ran it through some gaming tonight no issues what so ever. Took a look at the sensors from GPU-Z, highest power draw for the card was 271.0 W, which is in spec for the RX 6800XT, and Voltage was highest at 1.150V.
 
Look's solid to me and I'm getting some of my best scores on 3DMark benches. 
 
I appreciate the help from everyone here, was very good insight. Now, I have to decide the hard thing, If I stick with the RX 6800XT or buy the 3080 FTW Ultra when my time in que pops from EVGA. That will be a debate!