My specs:
- RX 7800 XT
- Ryzen 7500F
- 32GB RAM (Memtested less than a month ago)
- Seasonic X series 650W (high end PSU from around 10 years ago)
I’m currently running fedora rawhide linux, but I had the same issue on Bluefin Linux Stable and Debian Sid.
When I’m starting to play a demanding game, my system crashes within 5 seconds of loading the level. I wasn’t able to reproduce that with stress tests. There’s nothing in the logs, they just stop.
I think that’s all. I can provide more details. If you can give me meaningful troubleshooting steps, I’m willing to install another system, even windows.
In my opinion the issue is clear, the PSU is old and can’t keep up with the GPU, so I should probably replace it.
I don’t want to do that, so if you have any other idea, please let me know.
What specs should I aim for for the new PSU?
Edit: I’m cooked, I tried booting the PC to make some tests again, but I’m getting a red motherboard light for CPU. The PC boots tho
Edit2: I found those deals on PSUs. I live in Poland, so prices are at least 25% higher than in the US:
- Corsair RM850e 2025 for $110
- FSP VITA GB 750W for $82
- MSI MAG A750GL for $95
Get the Corsair. You could look at the PSU tier list but the RM850 will be close to the top so just pay the little bit extra imo. Plus more headroom.
And be grateful you’re not stuck with a case that can only take SF or SFL PSUs
Are you speaking from experience?
With Corsair PSUs, yes.
From having a (cooler master) 650w PSU struggling to supply my 9070xt and 7800x3d, yes.
From going through the tier list and seeing which PSU manufacturers are rated highly consistently, yes.
From facing a case that only allows for smaller form factor PSUs, also sadly yes - I have an SF1000 for the additional headroom for when I next upgrade my GPU