PC immediately shuts down when GPU is utilized

[Leychee]

Hello, here's my build: https://fr.pcpartpicker.com/user/Ley01/saved/FmsqHx

 

When the GPU reaches 100% utilization the PC immediately shuts down. I can't even get to the FurMark stress test or play. In MW2 I can idle in the menu but nothing else.

I don't know why this just started happening, it was completely fine 2 days ago.

 

While taking a look at the reliability monitor, I can see that there's a hardware error right before the PC shuts down:

Spoiler

The temperature is not the culprit as far as I know. I've been monitoring it right before the system crashes: I'm idling at 59°C with the hotspot at 67-69°C (hot?) but on full load, right before everything crashes, the hot spot never reaches 90°C. It's usually 80°C.

 

Undervolting has fixed the issue for now, I can safely play, run benchmarks, and stress tests. Could it be a PSU problem?

 

Thanks for your help.

[191x7]

Does your board run the latest Bios version?

 

Do you use 2 8-pins from the same cable (piggy-tail) or do you use 2 pci-e 8-pin cables?

 

Undervolting the CPU or the GPU?

 

Can you put a fan to cool the VRM?

[DarkSmith2]

1 hour ago, Leyf said:

Hello, here's my build: https://fr.pcpartpicker.com/user/Ley01/saved/FmsqHx

 

When the GPU reaches 100% utilization the PC immediately shuts down. I can't even get to the FurMark stress test or play. In MW2 I can idle in the menu but nothing else.

I don't know why this just started happening, it was completely fine 2 days ago.

 

While taking a look at the reliability monitor, I can see that there's a hardware error right before the PC shuts down:

  Reveal hidden contents

The temperature is not the culprit as far as I know. I've been monitoring it right before the system crashes: I'm idling at 59°C with the hotspot at 67-69°C (hot?) but on full load, right before everything crashes, the hot spot never reaches 90°C. It's usually 80°C.

 

Undervolting has fixed the issue for now, I can safely play, run benchmarks, and stress tests. Could it be a PSU problem?

 

Thanks for your help.

it absolutely is your PSU, its 700w multirail for a 7900xtx. Its most likely triggering OCP.

[Slizzo]

These are classic symptoms of not enough PSU in your system, @Leyf.

 

700W SHOULD be enough for that system, but with a 7900XTX in there it will want a LOT of power, possible that you should move to an 850W PSU and see if your problems persist.

[Leychee]

2 hours ago, 191x7 said:

Does your board run the latest Bios version?

 

Do you use 2 8-pins from the same cable (piggy-tail) or do you use 2 pci-e 8-pin cables?

 

Undervolting the CPU or the GPU?

 

Can you put a fan to cool the VRM?

Yes, I updated it very recently.

I use 2 8-pins form the same cable, tried with another cable (I have a non-modular PSU) and it didn't solve much. Should I try with 2 separate cables?

Undervolting the GPU.

I honestly have no clue, never did that before.

 

1 hour ago, DarkSmith2 said:

it absolutely is your PSU, its 700w multirail for a 7900xtx. Its most likely triggering OCP.

1 hour ago, Slizzo said:

These are classic symptoms of not enough PSU in your system, @Leyf.

 

700W SHOULD be enough for that system, but with a 7900XTX in there it will want a LOT of power, possible that you should move to an 850W PSU and see if your problems persist.

Should I upgrade to a Corsair RM850x then? I've been really wanting a modular PSU as well, so...

[191x7]

1 minute ago, Leyf said:

Yes, I updated it very recently.

I use 2 8-pins form the same cable, tried with another cable (I have a non-modular PSU) and it didn't solve much. Should I try with 2 separate cables?

Undervolting the GPU.

I honestly have no clue, never did that before.

 

Should I upgrade to a Corsair RM850x then? I've been really wanting a modular PSU as well, so...

Use 2 different 12V pci-e 8-pin cables. Will likely solve the issues since the psu has multiple 12v rails.

[QuantumSingularity]

You bought a 700W PSU for a GPU that requires a minimum of 800W. Get a proper 1000W one to have some headroom and everything will be fine. The difference in prices between 850W and 1000W is about $20...

Also ... why went for a B450 board ?!?!? why didn't you get B550?

[Leychee]

On 12/19/2022 at 5:10 PM, 191x7 said:

Use 2 different 12V pci-e 8-pin cables. Will likely solve the issues since the psu has multiple 12v rails.

That seems to have fixed the issue for now. Thank you so much!