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PSU Wattage Estimator

Pick a CPU and GPU to get a recommended PSU wattage with 30% headroom.

Result

Component draw

402 W

Recommended PSU

450 W

CPU

65 W

GPU

200 W

About this tool

Sum component TDPs (CPU, GPU, RAM, storage, fans), add overhead, and pick the next standard PSU size with 30% efficiency headroom. Targets the recurring r/buildapc 'is 650W enough for a 4070?' thread.

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