Is my Seasonic Tx-850W going bad? Shutdown once

[sew333]

Hi dear users. I have had an problem today.

My pc:
Seasonic PRIME TX-850 80Plus Titanium 850W
10850K stock 4800mhz stock Kraken X73 good temps
2x16 GB DDR4 GSKILL 3000mhz XMP
Seasonic Tx-850 Ultra Titanium
Gigabyte Rtx 3090 Gaming ( 2x8 pin , 2 separate cables )
Aorus Z490 Pro Gaming
1 TB SSD


I bought pc in march 2021. No single issue,no reboots,no shutdowns. I played all games for many hours,no issues. Today…i launched Metro Exodus and after cinematic when is press E button part pc just shutdown. I rebooted again and its fine again.

Happened when gpu load change from 0% to 99%.

My question is. It was psu issue or maybe other hardware?

I remember that when pc goes off ,pc case lights flickered once and monitor flickered. That not happens when i shutting down manually.

i am running now game and no shutdowns. Happened today once. Also i have pc until march 2021 and thats like today never happened.

Is psu going just bad,rma or what you recommend for me. Thank you

ps:
ps:
I repeated launching game maybe 50 times again and no shutdown.
Happened once.
PS:
I am not german sorry for english. Danke

[Lowkey]

Seasonic PRIME based units experience shutdowns with RTX3080/3090 (and possibly RX6900 XT) GPUs, especially ones with unlocked power limit like FE and ASUS Strix. It is recommended, if going with such units, to overprovision wattage, 1kW for RTX3080 and 1.2kW for RTX3090, or power-limit the GPU, or performing a 'dirty' fix of disconnecting a pin of 12V V-sense wire from PSU-side connector of 24-pin motherboard cable (courtesy of Jonny Guru). Units based on post-2018 revisions of Seasonic Focus platform and majority of units by other OEMs are not affected.

Seasonic changed their rma procedure this year and the rma of my seasonic took less than a week without any questions.

[sew333]

I tried to reproduce that so i launched Metro again maybe 80 times and not shutdown. So why that happened once? Also change psu or stay with it?

[Lowkey]

Change psu. You cant reproduce that problem.

[r3ptil3]

That looks like the OCP problem with Seasonic PSUs and RTX 3080/90 GPUs.

https://hardforum.com/threads/need-replacement-for-seasonic-tx-850-with-better-ocp-for-3090.2011505/

Replace it (RMA)!

[Maorga]

May you try this tool OCCT

https://www.ocbase.com/

It does a lot of fast switching powerlevels.

May it helps you to reproduce the problem.

[hq-hq]

maybe you encountered a power-line flicker