What's more likely to be faulty in this scenario?

Dano · 31 Aug 2020 at 16:31

Mr Mcgoo said:
i believe it to be your power supply. i had the same issue and turned out to be my 12v rail that was dropping below 11v under high loads 50% and gpu lost display output and a simple restart fixed it. i was running some extension cables for the 24 pin atx and gpu and cpu power cables. after removing each one at a time testing in between i saw my 12v rail increase with each extension i removed. the largest increase i had was the 24 pin atx extension giving my 0.6v increase and fixed my issue.

Do you use extension cables? if not try a different certified cable or if under warranty, RMA it for a replacement

GPU is back in my main system and running fine on an alternate PSU at the moment, so the litmus test will be when I swap the Corsair PSU back in, it's either been a complete aberration or as you say, the PSU failing to supply enough power. We shall see in about an hour

Edit:

No, no extension cables in use at all assuming you mean PSU extension and not wall socket extensions?

Mr Mcgoo · 31 Aug 2020 at 16:57

Dano said:
GPU is back in my main system and running fine on an alternate PSU at the moment, so the litmus test will be when I swap the Corsair PSU back in, it's either been a complete aberration or as you say, the PSU failing to supply enough power. We shall see in about an hour

Edit:

No, no extension cables in use at all assuming you mean PSU extension and not wall socket extensions?

so psu seems like the issue and yes i mean psu extensions. i should have made that more clear

Dano · 2 Sep 2020 at 11:13

Well after all that it's now all working perfectly fine... I've no idea what caused it and no idea what fixed it but currently everything is happily playing nice. PC is in bits and will get a darn good clean before being put fully back together. Thanks everybody for your input.

Mr Mcgoo · 2 Sep 2020 at 12:56

possible for hair/dust to have got into the cable at some point and shorted it at high loads. my rtx 2070 did this recently with the corsair premium cables for my psu and turned out to be a hair :eek:

Dano · 2 Sep 2020 at 13:52

Anything is possible at the point

heatonpkmassive · 3 Sep 2020 at 00:42

Dano said:
Well after all that it's now all working perfectly fine... I've no idea what caused it and no idea what fixed it but currently everything is happily playing nice. PC is in bits and will get a darn good clean before being put fully back together. Thanks everybody for your input.

Result! Not the first time I've known this to happen, just unplugging and replugging stuff can have a magical effect