So then I was running a program called Core Temp. So after a bit I got back into the same game, saw the temps getting into 170°F so I quit the game, closed the Steam program, and my temps weren't dropping. Then I see the temp jump to 186°F and black. Everything shut off again.
Google search brings up results that 100°C is when a PC would shut down, but mine shuts down at 85°C. I am running the AMD FX-8300 chip so not sure how much of a difference it makes vs. running Ryzen or a newer Intel chip.
So is my PC shutting down at 85°C normal for that chip then?
更新1:
The PC is 6 years old. It's running a GTX 970 and the same PSU I originally installed. No, it's definitely temperatures, because once I took off the side of the case, my temps were holding at around 155°F to 160°F. Other problem is my heatsink. It needs to be larger with a larger fan on the heatsink.