What PSU do you need for an RTX 2080?
The RTX 2080 draws up to about 225W under full load. On its own that only tells half the story — your total system power (and so the PSU you need) depends just as much on your CPU, drives and cooling. This page sizes a supply for the RTX 2080 paired with a Core i7-8700K; if your parts differ, the calculator gives your exact number in seconds.
Paired with a Core i7-8700K, this build draws about 465W at peak (225W GPU + 150W CPU + system). A 850W unit runs it at ~55% load. Absolute minimum: 550W.
| GPU RTX 2080 / 2080 Super | 225W |
| CPU Core i7-8700K | 150W |
| Motherboard + RAM + drives + fans Rest of system | 90W |
| Total peak draw | 465W |
Recommended power supplies
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FAQ
Is a 550W PSU enough for an RTX 2080?
It's the bare minimum, but we'd recommend 850W. This build peaks around 465W, and a 850W 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 RTX 2080?
80+ Gold. It's the best balance of price and efficiency for a build this size. Never pair a good GPU with a cheap unrated PSU.