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Updated April 2026

⚡ Best gaming PC power supply 2026

The PSU is the most overlooked gaming PC component, yet it powers everything. In 2026, aim for at least 650W for a PC with RTX 4070 or equivalent, with 80 PLUS Gold certification for efficiency and longevity.

Best Alimentatore PC — picks by budget

BaseMSI

MSI A550BN — Alimentation ATX — 550 W — 80 PLUS Bronze — Ventilateur 120 mm

550 W · Bronze · non modulaire

~58 €

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BaseCorsair

CORSAIR CX550 — Alimentation ATX — 550 W — 80 PLUS Bronze — Fiable bureautique & gaming léger

550 W · Bronze · câblage fixe

~62 €

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BaseCorsair

CORSAIR CX650 — Alimentation ATX — 650 W — 80 PLUS Bronze — PC gaming milieu de gamme

650 W · Bronze · ventilateur 120 mm

~68 €

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BaseTecnoware

Tecnoware Free Silent Pro — 650 W — ATX — PC avec carte graphique GeForce GTX / RTX — Ventilateur silencieux

650 W · connecteurs PCI-E · Free Silent Pro

~70 €

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BaseTecnoware

Tecnoware — Onduleur Line-Interactive — Secours coupure secteur — Prise PC / périphériques

UPS · protection surtension · autonomie courte

~74 €

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Media gammaASUS

ASUS Prime — Alimentation ATX — 750 W — 80 PLUS Bronze — PC gaming & création

750 W · Bronze · double ball bearing fan

~88 €

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Media gammaThermaltake

Thermaltake Toughpower GT — 750 W — ATX 3.1 — 80 PLUS Gold — Modulaire

750 W · Gold · ATX 3.1 · modulaire

~108 €

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Alta gammaCorsair

CORSAIR RM750e (2025) — 750 W — Full modulaire — ATX 3.1 / PCIe 5.1 — Cybenetics Gold

750 W · full modulaire · câble 12V-2x6 · silencieuse

~118 €

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Alta gammaCorsair

CORSAIR RM850e (2025) — 850 W — Alimentation ATX — Full modulaire — Silencieuse — 80 PLUS Gold

850 W · Gold · full modulaire · RM e 2025

~132 €

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How to choose a gaming PC power supply?

✓Wattage: calculate total component consumption (GPU + CPU + peripherals) and add 20–30% headroom. 650W covers most gaming setups.
✓80 PLUS: Bronze = 82%+ efficiency, Gold = 87%+, Platinum = 90%+. Gold is the best value in 2026.
✓Modular vs fixed: modular PSUs (detachable cables) simplify cable management and improve airflow in the case.
✓Reliable brands: Seasonic, be quiet!, Corsair, EVGA, Fractal Design. Avoid unknown budget brands for this critical component.
✓Warranty: a quality PSU comes with 5–10 year warranty — a sign of reliability.

FAQ

How many watts for an RTX 4070?

The RTX 4070 draws up to 200W under load. With a Ryzen 7 or i7 CPU, total system draw is 350–400W. A 650W PSU is the recommended minimum with 25% headroom.

What does 80 PLUS Gold mean?

80 PLUS Gold guarantees ≥87% electrical efficiency at 50% load. This reduces heat dissipation, noise and your electricity bill.

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