be quiet! Dark Power Pro 11 BN253

The king of power supplies

The be quiet! brand is firmly associated with premium, high‑quality A‑class products. However, the Dark Power Pro 11 PSU stands out even among its renowned siblings; its list of accolades is truly impressive. For example, its efficiency reaches 94% (as confirmed by its 80+ Platinum certification), it can run 24/7 at an ambient temperature of 50 °C (meeting server‑grade requirements), and it uses an OEM platform from FSP that overclockers know well.

Care for overclockers

The attention to overclockers doesn’t end there. For instance, there’s a dedicated switch on the PSU housing for the +12V rail modes: it can be a single rail or split into four “virtual” rails with current limits. At the same time, the main rail is dedicated and can boast a load capacity of 99% of the rated power. You can connect 4 additional fans directly to the PSU, and they’ll run in sync with the stock fan. And its exceptionally quiet operation is thanks to the be quiet! SilentWings branded fan on a fluid‑dynamic bearing.

For builds of any complexity

There’s little point dwelling on rail stability, peak power headroom, and ripple — all these metrics are on par with the best power supplies on the market. The 13% power reserve at peak loads is impressive as well. As a result, this tested model can be confidently recommended for high‑end systems with multiple graphics cards. Perhaps the only thing that might give you pause is the high price. But it’s a no‑compromise flagship with no weak spots, so the price is fully justified. It’s also one of the longest units in its class, so be sure to factor that in before buying.