pc turns off when gaming

[neto333]

Hi, in some demanding games like microsft flying simulator my pc turns off after a few minutes. It does not happens with all games. I hear that it could be a problem with the psu, but the psu i got is new, just got it last week and is a corsair rmx 850 w. My gpu is a rtx 3090 zotac trinity (also new). My cpu is a Intel(R) Core(TM) i7-9700K (this one is like 2 years old).
About temperatures i have measure the temperature with zotac firefly and it is about 70-80 when gaming. Using 90%+ of the gpu.
Maybe it could be an ups problem, because when this happens my ups turns off and the high voltage button turns on. My ups is a CyberPower UPS CST135XLU, No break 1350VA/810W. But is a little bit weird because it says im only using about 60-70% of my ups. So i dont know what it could be.
Thank you

 

[COLGeek]

If you remove the UPS and just power directly to the socket, does the problem go away?

 

[neto333]

If you remove the UPS and just power directly to the socket, does the problem go away?

Hi, so far is working great without the ups, so i guess that was the problem. I tested it by playing the flying simulator, overwatch 2 and a plage tale requiem. But going to keep testing it more and if i have any problems i will update.

Thank you very much @COLGeek

 

[COLGeek]

Hi, so far is working great without the ups, so i guess that was the problem. I tested it by playing the flying simulator, overwatch 2 and a plage tale requiem. But going to keep testing it more and if i have any problems i will update.

Thank you very much @COLGeek

You are welcome. One of the moderators suffered a similar problem recently. A beefier UPS solved the issue.

 

[dxchase]

It does sound like a UnitPowerSupply problem