What PSU do you need for an RX 7900 XT?
Recommended PSU
1000W · 80+ Gold or Platinum
Paired with a Ryzen 7 7800X3D, this build draws about 525W at peak (315W GPU + 120W CPU + system). A 1000W unit runs it at ~53% load. Absolute minimum: 650W.
| GPU RX 7900 XT | 315W |
| CPU Ryzen 7 7800X3D | 120W |
| Motherboard + RAM + drives + fans Rest of system | 90W |
| Total peak draw | 525W |
Change the CPU, drives, fans and overclock for a precise number.
Recommended power supplies
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FAQ
Is a 650W PSU enough for an RX 7900 XT?
It's the bare minimum, but we'd recommend 1000W. This build peaks around 525W, and a 1000W unit keeps it near 55% load — the efficiency sweet spot — with headroom for the GPU's transient spikes.
What efficiency rating should I get for an RX 7900 XT?
80+ Gold or Platinum. It's the best balance of price and efficiency for a build this size. Never pair a good GPU with a cheap unrated PSU.