Gaming accessory
Updated July 2026Best 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 PC power supply — picks by budget
~$63
MSI
MSI A550BN — Alimentation ATX — 550 W — 80 PLUS Bronze — Ventilateur 120 mm
550 W · Bronze · non modulaire
~$68
Corsair
CORSAIR CX550 — Alimentation ATX — 550 W — 80 PLUS Bronze — Fiable bureautique & gaming léger
550 W · Bronze · câblage fixe
~$74
Corsair
CORSAIR CX650 — Alimentation ATX — 650 W — 80 PLUS Bronze — PC gaming milieu de gamme
650 W · Bronze · ventilateur 120 mm
~$76
Tecnoware
Tecnoware Free Silent Pro — 650 W — ATX — PC avec carte graphique GeForce GTX / RTX — Ventilateur silencieux
650 W · connecteurs PCI-E · Free Silent Pro
~$81
Tecnoware
Tecnoware — Onduleur Line-Interactive — Secours coupure secteur — Prise PC / périphériques
UPS · protection surtension · autonomie courte
~$96
ASUS
ASUS Prime — Alimentation ATX — 750 W — 80 PLUS Bronze — PC gaming & création
750 W · Bronze · double ball bearing fan
~$118
Thermaltake
Thermaltake Toughpower GT — 750 W — ATX 3.1 — 80 PLUS Gold — Modulaire
750 W · Gold · ATX 3.1 · modulaire
~$129
Corsair
CORSAIR RM750e (2025) — 750 W — Full modulaire — ATX 3.1 / PCIe 5.1 — Cybenetics Gold
750 W · full modulaire · câble 12V-2x6 · silencieuse
~$144
Corsair
CORSAIR RM850e (2025) — 850 W — Alimentation ATX — Full modulaire — Silencieuse — 80 PLUS Gold
850 W · Gold · full modulaire · RM e 2025
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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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