An undersized power supply can cause crashes, while an overpowered one could be an unnecessary investment. Between wattage, 80 PLUS certification and cabling type (modular, semi-modular or non-modular), there are several criteria to consider when making an informed choice. In this guide, we present a selection of the best power supplies on the market for different configurations and uses, from gaming to video editing to silent PCs.
Our selection of the best PSUs in 2026
|
Budget-friendly
MSI MAG
|
Best choice
Corsair RMx 2024
|
High-end
be quiet! Dark Power 13
|
|---|---|---|
 |
 |
 |
|
650 W for a modest 1080p build. 80 PLUS Bronze and single 12V rail. OVP, OCP, OPP, OTP, SCP protections. 5-year MSI warranty. |
850 W fully modular. ATX 3.1 with native 12V-2x6 cable. 80 PLUS Gold and Zero RPM mode. 10-year Corsair warranty. |
850 W to 1300 W depending on needs. 80 PLUS Titanium. Native 12VHPWR connector. For high-end RTX and workstations. |
| 49,99 € | Voir sur Amazon | 249,99 € |
Need a high-performance power supply for a high-performance PC?
Aerocool Lux – The inexpensive power supply for office applications
The Aerocool Lux RGB M 550W is a semi-modular power supply that combines performance, RGB design and energy efficiency. Certified 80 Plus Bronze 230V EU, it offers up to 88% efficiency, reducing power consumption and heat generation. With power ratings of 550W, 650W or 750W depending on the model, it is suitable for mid-range office and gaming configurations, guaranteeing a stable and efficient power supply.
Its integrated RGB lighting features 13 lighting effect modes, controllable via a dedicated button, and can be synchronized with ARGB 5V-compatible motherboards for complete customization. Its semi-modular design facilitates cable management and case ventilation. Flat black cables ensure clean, neat installation, reducing unnecessary clutter.
On the cooling side, the Aerocool Lux RGB M 550W is equipped with a silent 120 mm fan optimized to automatically adjust its speed according to the load. A 30% increase in ventilation area on the power supply case improves heat dissipation to prevent overheating. With its modern design, customizable lighting and solid performance, this power supply represents a balanced choice for those who want a reliable, aesthetically pleasing solution without breaking the bank.
Highlights :
Drawbacks :
Buy at the Best Price on Amazon
MSI MAG – The best 650W power supply unit
The MSI MAG A550BN is an 80 Plus Bronze-certified 550W power supply, guaranteeing good energy efficiency while reducing power consumption. Its unique 12V rail ensures stable current distribution, making it suitable for entry-level and mid-range configurations. Thanks to its active PFC, it improves system stability and reliability, limiting voltage fluctuations that can affect component performance.
This model features a 120 mm fan with plain bearings, providing efficient cooling with low noise levels. Its DC-to-DC circuit optimizes voltage conversion, improving overall power supply efficiency. It also features multiple electronic protections (OVP, OCP, OPP, OTP, SCP) that prevent overvoltage, short-circuiting and overheating, ensuring greater durability.
The MSI MAG A550BN’s non-modular cabling makes installation quick and easy, although less flexible than modular models. Its standard ATX format ensures compatibility with most PC cases. Finally, MSI backs this model with a 5-year warranty, testifying to its reliability for users looking for an affordable, high-performance power supply.
Highlights :
Drawbacks :
Buy at the Best Price on Amazon
Be quiet! Straight Power 12: 750W power supply with up to 94% efficiency
The be quiet! Straight Power 12 750W is a high-end power supply featuring 80 Plus Platinum certification and up to 94% energy efficiency. Designed for gaming and workstation configurations, it complies with ATX 3.0 standards and features a 12VHPWR connector for PCIe 5.0 graphics cards, as well as four PCIe 6+2 pin connectors for optimum compatibility with recent and future GPUs.
Its optimized cooling is based on a 135 mm Silent Wings fan designed to run almost silently, even under heavy load. Thanks to its design without internal wiring, ventilation is improved and component durability is preserved. What’s more, Full Bridge LLC technology and the use of 105°C-certified Japanese capacitors ensure irreproachable electrical stability for high-performance systems.
Totally modular, the Straight Power 12 facilitates cable management to improve and case airflow. With its robust construction and silent operation, this power supply is aimed at users looking for a reliable, high-performance solution to power their mid-range or high-end configuration, while minimizing energy consumption.
Highlights :
Drawbacks :
be quiet ! Dark Power 13: The overpowered power supply up to 1600W
The be quiet! Dark Power 13 is a high-end power supply designed for the most demanding gaming and professional configurations. Certified 80 Plus Titanium, it offers up to 95.8% energy efficiency, optimized power consumption and reduced heat generation. Available in 750W, 850W and up to 1600W, it meets the needs of modern workstation and high-end gaming PC configurations.
ATX 3.0 and PCIe 5.0 compatible, this power supply features a 12VHPWR connector for the latest graphics cards, while retaining several PCIe 6+2 pin connectors for previous models. Its cooling is based on a frameless Silent Wings fan, ensuring virtually inaudible operation and optimized airflow. What’s more, the cabling-free design improves heat dissipation and extends component life.
One of its major assets is the presence of an overclocking mode via a switch that allows you to switch from a multi-rail mode to a single-rail mode. This offers greater flexibility for powering high-consumption components, particularly graphics cards and overclocked processors. Thanks to its impeccable build quality, electrical stability and silent operation, the Dark Power 13 is a benchmark for users looking for a reliable, high-performance, long-lasting power supply.
Highlights :
Drawbacks :
In this buying guide dedicated to the best PC power supplies (or Power Supply, often abbreviated to Alim), it’s crucial to choose a model suited to the configuration you’re planning to mount. Whether you’re aiming for a gamer PC to get more FPS or a more traditional workstation, the PC motherboard (whether ATX, micro-ATX or mini-ITX), processor (for example, an Intel Core processor), graphics card (Nvidia GeForce GTX or Radeon) and even cooling (fans, radiator, even watercooling) will influence the wattage required.
Don’t let the algorithm decide for you
Add Assistouest to your preferred sources on Google so you can find our guides faster when you search for an IT solution.
How to choose the right PC power supply?
A good PC power supply must offer excellent value for money and rock-solid reliability. ATX power supplies available on the market range from entry-level to high-end models, and are often modular, which facilitates wiring: you can plug in only the pins you need (PCI-Express connectors, Molex, etc.). In addition, well-known brands such as Cooler Master, Fractal Design and Asus ROG offer power supplies capable of handling demanding configurations, especially if you’re planning SLI or advanced overclocking of your Intel processor.
assistouest.frBy choosing a modular PSU, you free up space in your ATX case and improve air circulation for the cooling system. The ports available on these PSUs (multiple PCI-Express sockets, 24-pin main connector, HDD cables, etc.) guarantee full compatibility with your ATX or micro-ATX motherboard. This flexibility is particularly appreciated by gamers who want to optimize their configuration for recent titles, take advantage of Nvidia GeForce or Radeon technologies, and keep a safety margin in terms of watts for future upgrades.
If you’re a gamer looking for maximum performance, you should know that some Cooler Master models or series offer certificates of efficiency (80 Plus Gold, Platinum, etc.) and a design thought out for muscular configurations (boosted GTX cards, state-of-the-art socket, etc.). With this type of PC power supply, you can guarantee your motherboard, graphics card and peripherals stable, secure power and the best value for money for your gamer PC in 2026.