What PSU do you need for an GTX 970?
The GTX 970 draws up to about 145W 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 GTX 970 paired with a Core i7-4770K; if your parts differ, the calculator gives your exact number in seconds.
Paired with a Core i7-4770K, this build draws about 335W at peak (145W GPU + 100W CPU + system). A 650W unit runs it at ~52% load. Absolute minimum: 400W.
| GPU GTX 970 | 145W |
| CPU Core i7-4770K | 100W |
| Motherboard + RAM + drives + fans Rest of system | 90W |
| Total peak draw | 335W |
Recommended power supplies
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FAQ
Is a 400W PSU enough for an GTX 970?
It's the bare minimum, but we'd recommend 650W. This build peaks around 335W, and a 650W 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 GTX 970?
80+ Bronze or 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.