What power supply do you need for the RTX 5080?
The GeForce RTX 5080 is rated at 360 W total board power. That's 60 W more than the RTX 5070 Ti. Here's the PSU size we recommend, the bare minimum, and what to buy.
With a typical gaming CPU (Ryzen 7 9800X3D), the RTX 5080 draws about 493 W while gaming and up to 604 W under full load. GPU spikes can briefly reach about 784 W, so choose an ATX 3.1 unit rated 80+ Gold or better.
RTX 5080 PSU size by CPU
| Build | CPU | Gaming draw | Minimum | Recommended |
|---|---|---|---|---|
| Budget | Ryzen 5 7600 | 470 W | 650 W | 750 W |
| Gaming | Ryzen 7 9800X3D | 493 W | 750 W | 850 W |
| High-end | Core i9-14900K | 558 W | 850 W | 1000 W |
Assumes 2 memory sticks, 1 NVMe SSD, air cooling and 3 fans, with no overclocking. Using a different CPU? Calculate your exact build.
Best power supplies for the RTX 5080
Our 850 W picks. Every one is a fully modular, 80+ Gold or better unit from a brand with a strong reliability record.
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RTX 5080 power specs
| Total board power | 360 W |
|---|---|
| Estimated ms-level spike | ≈ 540 W |
| Power connectors | Usually 1× 12V-2x6 (16-pin) cable. A native PSU cable is safer than adapters; some partner cards use 2× 8-pin instead. |
| Recommended PSU (pre-ATX 3.0 unit) | 850 W |
| Estimated running cost | ≈ $11.09/month (3 h/day at $0.18/kWh) |
Frequently asked questions
Is 550W enough for the RTX 5080?
No. With a typical gaming CPU, the RTX 5080 can push a 550 W PSU past its safe limit (about 110% at full load). Get at least 750 W, ideally 850 W.
Is 650W enough for the RTX 5080?
It can work, but it's tight. A full-load stress test would push a 650 W unit to about 93% of its rating. We recommend 850 W for quieter, safer operation.
Is 750W enough for the RTX 5080?
It can work, but it's tight. A full-load stress test would push a 750 W unit to about 81% of its rating. We recommend 850 W for quieter, safer operation.
Is 850W enough for the RTX 5080?
Yes. A quality 850 W ATX 3.x power supply runs the RTX 5080 with a typical gaming CPU at about 58% load while gaming.
Is 1000W enough for the RTX 5080?
Yes. A quality 1000 W ATX 3.x power supply runs the RTX 5080 with a typical gaming CPU at about 49% load while gaming.
What power connector does the RTX 5080 use?
Usually 1× 12V-2x6 (16-pin) cable. A native PSU cable is safer than adapters; some partner cards use 2× 8-pin instead.