Question My pc turns off when CPU reach 70 degrees C

[Balla Patrik]

Hello guys!
I've build my PC a year ago and it always turns off while i playing games.

Motherboard: Prime B450M-A
CPU: Ryzen 5 1600AF (stock cooler)
PSU: nJoy 650W 80+Gold

I can play most of them without any trouble but in some games like BF4, R6S my pc randolmy turns off without restarting.
And later i noticed that it only turns off when the CPU reaches 70 degrees C. I changed the thermal throttle limit in the BIOS to 85-90 degrees C but it still happening.

 

[Lutfij]

Welcome to the forums, newcomer!

That PSU shouldn't be sold as a PSU. Might want to source a donor PSU that's reliably built to try on your existing system in place of that expensive paperweight. You forgot to mention the make and model of your GPU in your build. Ram used on your build?

 

[Balla Patrik]

Welcome to the forums, newcomer!

That PSU shouldn't be sold as a PSU. Might want to source a donor PSU that's reliably built to try on your existing system in place of that expensive paperweight. You forgot to mention the make and model of your GPU in your build. Ram used on your build?

My GPU is a GTX 1050Ti and my ram is Goodram IRDM X Black 16GB DDR4 2666MHz (2x8).
Oh and it's a new PSU, before this i had a cheap 500W PSU. (This is the reason i changed it)

 

[t0rxe]

I'd get an 850 Watt power supply. During gaming the current draw is peaking and the 12V rail would be limited which is causing a shutdown since power supplies don't mean 650 Watts at one time. It's split amongst each power rail (with 12V mainly getting the majority).