What PSU do you need for an Intel Arc A770?
The Intel Arc A770 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 Intel Arc A770 paired with a Ryzen 5 5600 / 5600X; if your parts differ, the calculator gives your exact number in seconds.
Paired with a Ryzen 5 5600 / 5600X, this build draws about 391W at peak (225W GPU + 76W CPU + system). A 750W unit runs it at ~52% load. Absolute minimum: 500W.
| GPU Intel Arc A770 / A750 | 225W |
| CPU Ryzen 5 5600 / 5600X | 76W |
| Motherboard + RAM + drives + fans Rest of system | 90W |
| Total peak draw | 391W |
Recommended power supplies
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FAQ
Is a 500W PSU enough for an Intel Arc A770?
It's the bare minimum, but we'd recommend 750W. This build peaks around 391W, and a 750W 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 Intel Arc A770?
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.