Best power supply under 250 €
Efficiency, standard and warranty: power supplies under 250 € in stock, ranked on what really protects your machine.
A power supply is chosen on its certification first, not its wattage. The 80+ or Cybenetics label tells you how much of the power actually reaches the components: a Gold unit wastes less than a Bronze one, runs cooler, makes less noise and usually carries better capacitors. The standard comes next: an ATX 3.0 or 3.1 unit provides the 12V-2x6 cable used by recent graphics cards and absorbs their power spikes without shutting down. Modular cabling makes assembly and airflow easier, and the warranty, from five to twelve years depending on the model, shows how much the manufacturer trusts its components. Wattage, on the other hand, is sized to the machine: a typical gaming build draws between 400 and 600 W, and 750 to 850 W leave headroom for a future card. This ranking only includes models in stock at VoltCore, at catalogue prices; the configurator works out the wattage your machine needs.
By VoltCore, published on July 3, 2026. The ranking is recalculated on every visit from today's prices and stock — viewed in September 2026.
How this ranking is computed
The index weighs the efficiency certification first, the ATX 3.x standard second, then modular cabling and warranty length. Wattage only breaks ties at the end: a more powerful unit is not better for a machine that does not need it. Only models in stock, at catalogue prices.
Limitations to keep in mind
The labels measure efficiency, not the quality of the protections nor fan noise at full load, which are not in the specifications. Compact SFX units are included in the ranking: they fit an ATX case with an adapter, sometimes supplied. Prices and stock are today's.
If you are new to this
"80+ Gold" or "Cybenetics Gold" are efficiency labels: the more precious the metal, the less electricity the unit wastes as heat. "Modular" means the cables detach: you only plug in the ones you need, and the case breathes better.
Not sure about your pick? The configurator guides you part by part and checks compatibility at every step.