PC hardware · buying guide

Best Power Supply for a Gaming PC

Whichever game you're upgrading for, a GPU is only as good as the power supply feeding it. Here's how much wattage you actually need, what the 80 Plus rating means, and real PSUs worth buying at every budget.

The rule that matters most: undersizing a PSU doesn't just risk a shutdown under load, it can shorten the life of every component it powers. When in doubt, size up rather than down.

How much wattage do you actually need

This is a system-wide estimate (GPU + CPU + everything else), not just the GPU's own draw, and already includes headroom for efficiency loss and future upgrades.

GPU tierExample cardsRecommended PSU wattage
EntryRTX 4060, RX 7600550W
Mid-rangeRTX 4070, RX 7800 XT650–750W
High-endRTX 4080, RX 7900 XTX850W
EnthusiastRTX 4090, RTX 50901000–1200W

Not sure which GPU tier your build falls into? Run it through one of our PC checker tools first.

80 Plus ratings, explained

The 80 Plus badge measures how much of the power a PSU pulls from the wall actually reaches your components, versus being lost as heat. Higher tiers cost more up front but run cooler, quieter, and cheaper to operate over time.

RatingEfficiency at typical loadWho it's for
Bronze~85%Budget builds where price matters most
Gold~90%The sweet spot for most gaming PCs
Platinum~92%High-end builds running long sessions
Titanium~94%Enthusiast builds, diminishing returns for most people

Recommended power supplies, by budget

be quiet! Pure Power 12 M (750W, Gold)

Fully modular, quiet at load, and enough headroom for a mid-range build with room to upgrade the GPU later.

Amazon

Corsair RM750e (750W, Gold)

Corsair's most-recommended mid-tier unit, fully modular with a 10-year warranty.

Amazon

Corsair HX1000i (1000W, Platinum)

Built for RTX 4090/5090-class builds, digital monitoring included for real-time load tracking.

Amazon

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