Random reboots under load - PSU or CPU?

3,400 views28 replies

FRfragtasticOP

Posted Mar 26, 2025, 4:00 PM

Specs:

13700K
RTX 4070 Ti
Corsair RM750x
32GB DDR5

Started getting random reboots during gaming about a week ago. No BSOD, just instant black screen and restart. Happens most often in GPU-intensive games.

Things I've tried:

Memtest86 - passed 4 runs
DDU + fresh GPU drivers
Checked all power connections
Monitored temps - CPU max 82C, GPU max 76C

I'm thinking it might be a PSU issue since 750W is tight with a 13700K + 4070 Ti combo. Transient spikes could be tripping OCP. Thoughts?

2 Replies

SI silicon_sarah

SIsilicon_sarah

Mar 26, 2025, 5:00 PM#1

Almost certainly the PSU. The 13700K + 4070 Ti can spike well above 600W in transient loads. The RM750x has decent OCP headroom but GPU transient spikes are brutal. I'd upgrade to an 850W+ unit.

You can confirm by running a GPU stress test (Furmark) - if it reboots during that, it's definitely power delivery.

ST streamcore

STstreamcore

Mar 26, 2025, 7:00 PM#2

Had the exact same issue with similar specs. Swapped to an RM850x and haven't had a single reboot since. The transient power spikes on these Nvidia cards are real.