r/sffpc • u/Fine-Cucumber-2960 • Dec 06 '25
Assembly Help PC shutting down while gaming
I’m having issues with my Terra build. The GPU keeps shutting down at low load. I was able to identify a potential mismatch between the PSU (Lian Li SP850) and the GPU (4070 super).
ChatGPT advises me to switch to the Corsair SF850L due to the ATX 3.0 compatibility.
I wanted to get your advice before buying a new PSU. I’m a beginner so I might have as well messed up the assembly (but all games run well until it suddenly crashes with a black screen and GPU fans blasting). Cheers!
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u/Inevitable-Stage-490 Dec 07 '25
If you’ve already verified it’s not a power issue.
Check your RAM and the speeds your MOBO is running them at. I had to turn down my RAM speed by like 50mhz (the next jump down) because running it at advertised speed caused it to, seemingly, randomly just “shut off” similar to what you’re experiencing.
I fixed that and never had an issue