Is my PSU faulty?

[creepergdawg]

So I have recently been having issues with my year old custom PC. I went on to play Siege and about 4 mins into the game I began losing frames and eventually steadying out at 30fps. Then, out of nowhere, I get a brief message that says something about my ethernet cable being disconnected and my entire PC powers off. I tried it again and got the same result. Thinking it was just Siege being weird, i go to play PUBG and the same thing happens, but this time before I can even get into a game. I have done multiple malware scans with bitdefender and malwarebytes, and nothing came up. I went to play siege again, this time recording my temps. I never went above 70 celsius wit either my CPU or GPU. Everything else on my PC functions normally. I believe that something is up with my PSU that's causing this, as it only happens under heavy load and it's not thermal throttling. This has never happened before in the year that I've had my PC, and my estimated TDP for my system is 300w, 200w lower than my 500w PSU output. Is my PSU at fault for these shutdowns?

 

[Sedivy]

It very well could be. The quality is more important than overall wattage.
If you've got a voltmeter lying around you could do the voltage test for your psu yourself (part 2):
https://www.wikihow.com/Check-a-Power-Supply
or you can take it into a repair shop for them to check it for you.

 

[jankerson]

System specs including PSU.

 

[creepergdawg]

System specs including PSU.

i3-6100
HyperX 8GB 2x4
Asus H110M-A/DP
MSI RX 470
WD Blue 1TB
EVGA 500w-PSU

 

[Sedivy]

If it's https://www.amazon.com/EVGA-WHITE-Warranty-Supply-100-W1-0500-KR/dp/B00H33SFJU?psc=1&SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-ffab-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00H33SFJU
then that isn't a great quality one. Neither is https://www.bestbuy.com/site/evga-500-bronze-500w-power-supply-black/1017256.p?skuId=1017256
But say supernova G2 or G3 from evga are quite good.