Would a 600W power supply be sufficient for a Ryzen 7 5700X3D paired with an RX 9070? A PC-building calculator estimates the system will use around 450W, but the graphics card manufacturer recommends at least 650W, and some people suggest 750W or even 850W. I already have—or may need to keep using—a 600W unit for now, so I'd like to know whether it should work safely until I can afford an upgrade. The PSU's quality and model may also be relevant.
2 Answers
I’d avoid making the decision based only on total wattage. A high-quality 550W unit can outperform a cheap 850W model, so check the specific model, age, protections, and whether it has the appropriate GPU power connector. If the PSU is old, budget-tier, or unknown, upgrading to 750W or 850W is sensible.
600W will probably work, while 750W gives you more comfortable headroom. If you already own a reputable 600W unit, there’s no urgent need to replace it. If you’re buying a new PSU anyway, a quality 750W model would be the safer long-term choice.
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