High-quality PC power supplies for gaming, office and workstations – from quiet to high-performance models from leading brands such as Corsair, be quiet!, Seasonic and EVGA. Find the right power supply with the correct wattage and efficiency class for your computer – with fast delivery to Switzerland and the Principality of Liechtenstein.
In this category you'll find PC power supplies in various wattages and efficiency classes – from compact SFX power supplies for Mini-ITX systems to quiet 80 PLUS Gold models for gaming PCs, right through to high-performance power supplies with 1000 watts or more for workstations and high-end systems. Brands such as Corsair, be quiet!, Seasonic, EVGA and Thermaltake offer a wide selection of ATX, SFX and modular power supplies – ideal for PC builders, gamers and anyone who wants to reliably power their computer.
Buy power supplies online – for gaming, office & workstations
Whether you want to buy a power supply online, upgrade your existing system or assemble a new PC: the range covers standard ATX power supplies, compact SFX models, fully modular and semi-modular variants, as well as power supplies with 80 PLUS Bronze, Gold, Platinum and Titanium. This way, as a PC enthusiast, gamer or system integrator, you'll quickly find the right power supply – conveniently from home.
Wattage, Efficiency & Form Factor
For an office PC, 400–500 watts with 80 PLUS Bronze is often sufficient. For gaming PCs with current graphics cards, 650–850 watts and 80 PLUS Gold are recommended. High-end systems with multiple GPUs or workstations benefit from 1000–1600 watts and a Platinum or Titanium certification. Standard ATX power supplies fit into most mid-tower and full-tower cases, while SFX and SFX-L power supplies are the right choice for compact Mini-ITX builds.
Modular Power Supplies & Cable Management
Fully modular power supplies allow clean cable management, as only the cables actually needed are connected – particularly practical in cases with a window or in cramped spaces. Semi-modular models offer a good compromise, while non-modular power supplies represent a cost-effective option for closed systems without a window.
The category is ideal for PC builders and PC enthusiasts in Switzerland looking for a suitable power supply for their DIY build, as well as for gamers who need a powerful and efficient power supply for smooth gaming sessions. System integrators, IT professionals and anyone wanting to upgrade their existing computer with a reliable power supply will also find a wide selection here.
Quality, Safety & Product Selection
When buying a power supply, it's worth paying attention to high-quality workmanship, recognized certifications such as 80 PLUS, and comprehensive protection circuits (OVP, OCP, OTP, SCP). A high-quality power supply not only protects the installed components, but also ensures stable and efficient operation for many years.
Frequently Asked Questions
What wattage should my power supply have?▾
The required wattage depends on the components installed. For an office PC, 400–500 watts is often sufficient, while a gaming PC with a dedicated graphics card needs at least 650–750 watts. High-performance systems with multiple graphics cards require power supplies of 1000 watts or more. A power supply calculator or the graphics card manufacturer's specifications will help with the exact determination.
What is the difference between modular, semi-modular and non-modular power supplies?▾
With non-modular power supplies, all cables are permanently attached, which can lead to cable clutter. Semi-modular power supplies have fixed main cables, while additional cables can be plugged in as needed. Fully modular power supplies allow you to connect only the cables you actually need – ideal for clean cable management and better airflow in the case.
Which power supply is best suited for a gaming PC?▾
For gaming PCs, power supplies with 80 PLUS Gold certification or higher and a suitable wattage (usually 650–850 watts) are recommended. Brands such as Corsair, be quiet! and Seasonic offer models specifically optimized for gamers, with quiet fans, high efficiency and reliable protection circuits.
What does the 80 PLUS certification mean for power supplies?▾
80 PLUS is a certification standard for the energy efficiency of power supplies. The levels Bronze, Silver, Gold, Platinum and Titanium indicate how efficiently the power supply operates at different loads. An 80 PLUS Gold power supply, for example, achieves at least 87% efficiency at 20% and 100% load, and 90% at 50% load – saving electricity and reducing heat generation.
How do I know if a power supply fits into my PC case?▾
Most power supplies follow the ATX standard, but there are differences in dimensions. Standard ATX power supplies fit into most mid-tower and larger cases. For compact systems, SFX or SFX-L power supplies are required. Before purchasing, check the maximum supported power supply length of your case and the required form factor.
Which power supply brands are particularly reliable and long-lasting?▾
Among the most renowned brands are Seasonic, Corsair, be quiet! and EVGA. These manufacturers rely on high-quality components, thorough quality controls and often offer warranty periods of 5 to 12 years, indicating a long lifespan.
What should I look for if I want a power supply that is as quiet as possible?▾
Look for power supplies with a semi-passive or Zero RPM mode – the fan then remains completely off at low loads. Models from be quiet! are specifically optimized for quiet operation. High efficiency (80 PLUS Gold or better) also reduces waste heat and ensures lower fan speeds.
Can I continue to use my power supply for future hardware upgrades?▾
In principle yes, if there are sufficient power reserves and the necessary connectors (e.g. PCIe 5.0 / 12VHPWR for modern graphics cards) are available. A high-quality power supply with 750–850 watts and modular cable management provides enough headroom for later upgrades, without the need to immediately buy a new power supply.
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