What PSU do you need for an GTX 1660 Super?
The GTX 1660 Super draws up to about 125W 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 1660 Super paired with a Core i5-12400 / 13400; if your parts differ, the calculator gives your exact number in seconds.
Paired with a Core i5-12400 / 13400, this build draws about 305W at peak (125W GPU + 90W CPU + system). A 600W unit runs it at ~51% load. Absolute minimum: 400W.
| GPU GTX 1660 Super / 1660 Ti | 125W |
| CPU Core i5-12400 / 13400 | 90W |
| Motherboard + RAM + drives + fans Rest of system | 90W |
| Total peak draw | 305W |
Recommended power supplies
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FAQ
Is a 400W PSU enough for an GTX 1660 Super?
It's the bare minimum, but we'd recommend 600W. This build peaks around 305W, and a 600W 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 1660 Super?
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.