What PSU do you need for an Intel Arc A770?
Recommended PSU
750W · 80+ Gold
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 |
Change the CPU, drives, fans and overclock for a precise number.
Recommended power supplies
MSI MAG A750GL (750W, 80+ Gold, ATX 3.0) ↗
Native 12VHPWR cable — ideal for a 4070-class card.
Corsair RM850e (850W, 80+ Gold, ATX 3.1) ↗The safe default for high-end single-GPU rigs.
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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.