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This PC only has a a 550 Watt PSU. For context, NVIDIA recommends a PSU capable of delivering at least 750 Watts for an RTX 3080. Is this one just not efficien

This PC only has a a 550 Watt PSU. For context, NVIDIA recommends a PSU capable of delivering at least 750 Watts for an RTX 3080. Is this one just not efficient enough? I don't see any 80+ badges, but it's a pre-built so I wouldn't necesarily expect something like that to be front-and-center in their marketing material. EDIT: Other comments say this is about power draw when idle. That makes sense.

raxxorrax 5y ago
Your PSU has an efficiency curve. Chances are that you use more power with your 550 watt PSU compared to a 750 watt one, since it has a lower efficiency while supplying the needed power. I don't know how efficiency curves for modern PSU look like, maybe it isn't too relevant. I think most PC are well served with their optimal efficacy at around 300W. Here is a curve, but I don't know if that is representative of reality: https://linustechtips.com/uploads/monthly_2017_09/efficiency80bronze.jpg.6e539e31211063f60507c962c0c8823d.jpg https://linustechtips.com/uploads/monthly_2017_09/efficiency... This PSU would be most efficient when your system draws 250 - 300W of power.