Reboot playing Overwatch (or gaming), or running FurMark -- No BSOD

I ran FurMark again with HWMonitor on, and got the following results (posted below as a screenshot).

I exited FurMark as I was about to hit the predicted peak of 80 C, just cause I didn't want to keep the card running at that temperature. I could've sworn I heard a single beep come directly from my computer around the time I neared 80 C, which caught me off guard -- a bit scary, but I'm hoping it's non-consequential.

Only difference in voltages that catches my eye is that the motherboard +12V reading reached a minimum of 12.0 V, whereas it previously dipped to 11.808 V on my old PSU. The other readings on the motherboard and GPU don't seem strange.

Attachment 126431