PC power supply for home server

A home server runs continuously to share files, backups or network services. It often hosts several hard drives or SSDs, but does without dedicated graphics card: most energy serves storage and continuous availability. Reliability matters more than raw power, and connectivity becomes central.

This configuration shifts usual priorities. The number of SATA connectors takes precedence to connect all units without adapter, while the twelve volt rail can remain modest in the absence of power-hungry graphics components. Price retains its importance for equipment that stays on all year, where efficiency affects the electricity bill over the long term.

What matters in this specific case

The same criteria as on the category page, but not the same weight: here is what goes up and what goes down.

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Price
Matters more coefficient 1.3

Price weighs more heavily on a home server, as the power supply runs without interruption. Initial savings carry over time, but you must balance purchase cost and build quality: a failing power supply stops all services. Compare models considering certified efficiency, which reduces continuous consumption. A measured investment in reliable power supply avoids failures and data loss.
Power
Unchanged weight coefficient 1

Total power keeps standard weight for a home server. Without dedicated graphics card, consumption remains moderate, even with several drives and an active processor. Benchmarks range from one hundred twenty to one thousand six hundred watts, but the middle bracket, around six to eight hundred watts, already covers most needs. No point aiming too high: it increases the bill without benefit, as the server rarely draws maximum power.
Connectivity
Matters more coefficient 1.7

The number of SATA connectors becomes the major criterion for a home server. Each additional drive requires its own connector: main storage, redundant backups, archives. Recorded benchmarks range from three to fourteen connectors, and the upper part of this range serves fully here. Eight connectors or more offer the necessary flexibility to evolve storage without changing power supply. Favour generous models, even if all slots are not immediately used.
12V rail
Matters less coefficient 0.8

Combined power on the twelve volt rail weighs less in a server without graphics card. This rail powers processor and any mechanical drives, but the load remains limited compared to a graphics or gaming station. Benchmarks extend from four hundred fifty-six to one thousand three hundred watts: here, the low or middle bracket suffices amply. Focus your attention on stability and electrical quality rather than unnecessary peak power.

What is not worth paying for

The features pushed in this category that make no difference in this context.

Oversized twelve volt rail

A twelve volt rail over one thousand watts serves no purpose on a server without dedicated graphics card. The load remains modest, and this excessive capacity costs dearly without improving reliability. Better invest in complete electrical protections and silent cooling.
Integrated RGB lighting

Some power supply models integrate decorative LEDs and colour control systems. In a server often stored out of sight and running continuously, these features serve no purpose. They increase price and add superfluous components liable to fail.
Premium flat or braided cables

High-end sleeved cables improve the aesthetics of a windowed case, but a home server prioritises reliability over appearance. Well-secured standard cables suffice widely. The premium for decorative finishes better finances an additional SATA connector or better efficiency certification.

Price ranges for this use

Orders of magnitude, not displayed prices: a price only appears on Kalyneo once it has been collected from a merchant, with its collection date.

Under €50

Under fifty euros: this range offers basic models that may suit a light server, but check the number of available SATA connectors.

€50 to €100

Fifty to one hundred euros: this tier offers more generous connectivity and efficiency certifications that reduce consumption over the long term, ideal for a continuous server.

Over €100

Over one hundred euros: this level brings advanced protections and useful modularity if the server evolves often, but most configurations find their fit below.

The products selected for this use

Ranked by relevance for this specific case, not by their overall score.

PC power supplies be quiet!

be quiet! POWER ZONE 2 1000W power supply unit 20+4 pin ATX ATX Black

Relevance for this use: 75/100

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Our selection criteria for this use

A product only enters this list if it meets every one of these points. Its relevance is rated for this specific use, independently of its overall score in the category.