Is a 600W PSU Enough for an RX 6800 XT Upgrade?
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MellowKite42
I currently have an HP system with an RTX 3060 and am considering buying a relatively inexpensive RX 6800 XT. My main concern is whether the existing 600W Thermaltake Toughpower PSU can handle it safely. The power supply has two 8-pin GPU connectors, but they're connected using a single daisy-chained cable. Could running the 6800 XT this way overload the PSU or cables, potentially causing damage?
Answers
It may work, especially since a Ryzen 7 5700X3D system usually won’t draw an extreme amount of power. However, the concern isn’t only the average wattage; the 6800 XT’s power spikes and the quality of the existing PSU matter too. You probably won’t instantly set anything on fire, but replacing the unit with a reputable 750W model would give you much more headroom and peace of mind.
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The RX 6800 XT is roughly a 300W card and can produce significant transient power spikes. Your 600W unit might technically run the system, but that particular PSU isn’t considered a particularly strong model, so I wouldn’t pair it with a high-power GPU long term. A good-quality 750W power supply would be the safer choice. If possible, use separate PCIe power cables rather than relying on one daisy-chained cable.
MellowKite42: That makes sense. I was seeing conflicting advice, but I’ll probably budget for a quality 750W PSU along with the graphics card.
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MellowKite42: I’d prefer to keep the current PSU to save money, but I’m fine spending extra if replacing it makes the upgrade safer.