I recently upgraded to a Ryzen 9900x, and now I'm experiencing random shutdowns while gaming. I suspect it might be related to the PSU, which is a 2021 Seasonic Prime TX-750, as I think it could be triggering over-current protection (OCP). However, I'm a bit confused because power supply calculators indicate that my existing PSU size is adequate for my hardware configuration. To troubleshoot, I tested a friend's 750W 'be quiet' PSU, and it worked perfectly without any shutdowns. I even tried limiting my GPU to a maximum of 280 watts and reducing its clock speed below 1.7GHz, which stabilized everything. I'm considering sending my current PSU back for a replacement, but I'm worried about the shipping costs and whether a new unit would have the same issue, especially since Seasonic is known for their quality. My setup includes:
- PSU: 2021 Seasonic Prime TX-750 750W 80+ Titanium
- CPU: Ryzen 9900x, no overclock
- GPU: EVGA 3080 10GB
- RAM: 48GB DDR5
- One Samsung SSD, three case fans, and a Noctua fan for the CPU.
3 Answers
Regarding OCP, it usually means an instant shutdown happens if the supply can't handle the load. But it sounds like you did your homework on this. If Seasonic states that OCP kicks in with too small a PSU, then maybe yours is just on the flimsy side? Definitely worth pursuing the RMA process.
Seasonic is usually a reliable brand, but it’s not unheard of for even the best to have a defect here and there. I’d suggest going ahead and RMA your unit since the symptoms you describe suggest something is off with it. A 750W should definitely be enough for your setup, so it seems like it might just be a faulty unit.
Your PSU shouldn’t cause shutdowns unless it’s defective. Sometimes, issues can stem from bad wiring or too many adapters. It’s good you tested with a different PSU and found stability. I think the right move is to replace the Seasonic one, especially since your calculations say it should work just fine.
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