BSOD when stressing both CPU and GPU but not one or the other.

[MizunaGames]

Hello,

 

My computer is crashing whenever there is a load on both my CPU and my GPU, but both are stable on their own. This makes me suspect the PSU, but I wanted to ask for some more eyes before I went ahead and bought a new one.I would love to post dump files, but it's not creating them "due to error during dump creation". The actual crash is Event ID 41, source is Kernel-Power; the dump file error is ID 161 source is volmgr. Any help would be appreciated, and I'm happy to supply any info I can get.

 

Specs:

GPU: RTX 3080

CPU: Ryzen 7 1700x

MB: ASRock x370 Killer

RAM: 16gb Corsair Vengeance DDR4

PSU: Corsair RM 750x

[Fasauceome]

If you're concerned about power load, try reducing power to the CPU and GPU and see if a reduced load doesn't trigger the crash. Disable SMT on the CPU and cut the clock speed on the GPU via MSI afterburner or your software of choice

[-rascal-]

How are you powering the RTX 3080?

A single daisy-chain PCI-E 8-pin cable from the PSU, or two SEPARATE cables from the PSU?

[MizunaGames]

1 hour ago, Fasauceome said:

If you're concerned about power load, try reducing power to the CPU and GPU and see if a reduced load doesn't trigger the crash. Disable SMT on the CPU and cut the clock speed on the GPU via MSI afterburner or your software of choice

This seems to be the right track, boosting the power limit in geforce to 115% for the 3080 leads to more instability, and dropping it to 90% seems to be pretty solid running prime95 and Furmark.

26 minutes ago, -rascal- said:

How are you powering the RTX 3080?

A single daisy-chain PCI-E 8-pin cable from the PSU, or two SEPARATE cables from the PSU?

Excellent question. I think it's daisy chained now that you mention it. I've got some new hardware coming tomorrow (16gb of RAM wasn't cutting it anymore) so when she's on the operating table I'll check to make sure. I assume by your emphasis that I should be using 2 separate cables?

[MizunaGames]

Just now, MizunaGames said:

This seems to be the right track, boosting the power limit in geforce to 115% for the 3080 leads to more instability, and dropping it to 90% seems to be pretty solid running prime95 and Furmark.

Excellent question. I think it's daisy chained now that you mention it. I've got some new hardware coming tomorrow (16gb of RAM wasn't cutting it anymore) so when she's on the operating table I'll check to make sure. I assume by your emphasis that I should be using 2 separate cables?

Nevermind, dummy, I can see through my case. It's 100% daisy-chained.

[Fasauceome]

1 hour ago, MizunaGames said:

Nevermind, dummy, I can see through my case. It's 100% daisy-chained.

If you get 2 independent cables running to it and you're still experiencing instability, I would reach out to Corsair because the power supply should be more than capable of handling this setup.