The power supply unit (PSU) is one of the most important components of any PC. Despite its fundamental role, it is often overlooked when selecting components for a setup. In this guide, we will explain why the power supply is essential, what factors to consider when choosing one, and what are the best options depending on the type of PC.
Discover our catalog of power supplies at the following link.
Why is the Power Supply Important?
The power supply is responsible for distributing power to all the components of the system, ensuring that they receive the correct voltage. A quality power supply not only boosts the performance of the equipment, but also protects your components against power fluctuations.
Impact on Overall Performance
A proper power supply allows the processor, graphics card, and other components to operate at their full potential. If the PSU does not have enough power, the system may unexpectedly shut down or reduce performance to prevent damage. For example, in a gaming PC, the GPU (graphics card) requires a significant amount of power to perform at optimal levels, and an inadequate power supply can limit its operation.
Component Safety and Protection
Good quality power supplies include overcurrent (OCP), overvoltage (OVP), and short-circuit (SCP) protections. These protections help prevent costly damage by ensuring that internal components are not affected in the event of power fluctuations. A power supply with these features helps extend the life of all system components.
Factors to Consider When Choosing a Power Supply
Choosing the right power supply involves considering certain key factors such as power, efficiency, and modularity. Below we explain each of them.
Power and Efficiency Certification
The power supply’s power must be in line with your PC’s requirements. To estimate the ideal power, calculate the approximate consumption of your components (CPU, GPU, RAM, storage and fans), and select a power supply that covers at least 20% more than calculated. This leaves room for future upgrades and guarantees stability.
Efficiency certification is another crucial aspect. 80 Plus certifications (Bronze, Silver, Gold, Platinum, and Titanium) indicate the PSU’s efficiency percentage, meaning how much power it consumes and how much it wastes as heat. Higher-efficiency power supplies generate less heat and allow for more optimized electricity consumption.
Modularity and Cable Management
Modularity in a power supply refers to the ability to connect only the cables necessary for your setup. There are three types:
Non-modular: All cables are integrated into the power supply and cannot be removed.
Semi-modular: Some cables are fixed, while others are removable.
Modular: All cables are detachable, allowing for greater control and better internal organization.
Modular and semi-modular power supplies facilitate cable management, helping to maintain better airflow in the case and making installation easier. They are ideal for setups that seek a clean aesthetic and better air circulation.
Power Supply Recommendations by PC Type
Choosing a power supply varies depending on the use that will be given to the PC. Below, we recommend power supply options based on the type of equipment.
Power Supplies for Office PCs
A basic office PC (browsing, office applications, media playback) does not require a high-power power supply. Generally, a 350W to 500W power supply will suffice. 80 Plus Bronze or Silver certifications are recommended to ensure energy efficiency without requiring a high investment.
Recommended examples:
EVGA 400 W1 (400W, 80 Plus White) – Efficient and economical.
Corsair VS450 (450W, 80 Plus White) – Reliable power supply with good protections and an affordable price.
Power Supplies for Gaming and Professional PCs
For a gaming or work setup that involves high-demand tasks, such as video editing, 3D design or advanced programming, having a more powerful and efficient power supply is essential. 650W to 850W power supplies are ideal for configurations with dedicated graphics cards and advanced components. 80 Plus Gold or higher certifications help ensure stable consumption and lower heat generation, which is essential in demanding systems.
Recommended examples:
Seasonic Focus GX-750 (750W, 80 Plus Gold) – High efficiency and fully modular.
Corsair RM850x (850W, 80 Plus Gold) – Reliability and excellent protections, ideal for gaming.
EVGA SuperNOVA 750 G3 (750W, 80 Plus Gold) – Compact and modular power supply, perfect for advanced systems.
Conclusion: The Perfect Power Supply for Your PC
Choosing the right power supply is key to the performance, stability, and security of your PC. Evaluate the power needs of your setup and consider the efficiency rating that best fits your budget. Whether you need a modest power supply for an office PC or a powerful power supply for a gaming or professional setup, a good power supply is an investment that ensures all components function properly and remain protected from potential electrical problems.
