I'm planning to replace my current RTX 4060 8GB with an RX 6900 XT, but my power supply is only rated at 500 watts. Would I need to upgrade the PSU, and what wattage and quality level should I look for? My budget for the new power supply is around $100.
3 Answers
The RX 6900 XT uses roughly 300 watts under load, so your total system consumption could be much higher than the 500W PSU can comfortably handle. Check the requirements for the exact graphics card model and use a power calculator, but plan on replacing the PSU before installing the new GPU.
I’d go with a reputable 750W or 850W power supply rather than focusing only on the wattage label. Choose a unit with solid reviews, modern protections, and the required PCIe power connectors. For a high-end card like the 6900 XT, 850W is the safer long-term choice if you can find one near your budget.
Yes, a 500W PSU is too small for an RX 6900 XT. The card can draw around 300W by itself and may have higher transient spikes, so I’d look for a good-quality 750W unit at minimum. An 850W model would give you more headroom if the price difference is reasonable.
Do you have any recommendations that would fit a budget of about $100?
Would 750W be enough if I choose a good-quality model?