Recommended power supply
What PSU does the RTX 5090 need?
The RTX 5090 needs a 850W power supply (with headroom). See live used prices across 7 eBay markets.
✓ 850W PSU recommended
Power requirement
Spec
RTX 5090Power draw
575W
Live prices
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Common questions
A 850W PSU is recommended for a typical build using the RTX 5090 (which draws about 575W), leaving ~30% headroom for the CPU and other components.