PC Power Supply – How to Choose the Right Wattage and Quality

Calculating required wattage

Your PSU wattage depends on system components – the graphics card consumes the most power, followed by the CPU. For gaming builds with mid-range graphics cards, units like the ASUS TUF GAMING 750W provide adequate power headroom. For demanding systems with high-end GPUs, consider 850W or higher options.

80 PLUS certifications explained

80 PLUS Bronze, Gold, Platinum and Titanium certifications guarantee efficiency levels. A Gold rating like the Gigabyte UD1000GM Gold 80 Plus means at least 87% efficiency at typical load, reducing energy waste and heat output. Higher certifications pay off for systems running 24/7 or with high power draw.

Modular vs standard cabling

Fully modular power supplies let you connect only the cables you need, improving airflow and case aesthetics. Semi-modular models keep essential cables (24-pin, CPU) permanently attached while others are detachable. Brands like CORSAIR and BE QUIET! offer extensive modular options for cleaner builds.

Protection mechanisms – OVP, UVP, OCP

Quality power supplies must include over-voltage protection (OVP), under-voltage protection (UVP), over-current protection (OCP) and short-circuit protection (SCP). These features safeguard expensive components from damage during power grid instability or PSU failure. Manufacturers like ASUS, GIGABYTE and COOLER MASTER routinely include comprehensive protection suites in their models.

Noise levels and cooling systems

Fans with hydraulic bearings and semiconductor controls run quieter than budget models using sleeve bearings. Many PSUs feature zero-noise modes at low load – the fan only spins up under heavier operation. For silent workstations, look for "silent" or "quiet" designations from brands like BE QUIET! and CORSAIR.

Selection and Pricing

We offer 263 products from 35 brands across 3 sellers. Prices range from 1,258 to 561,349 RSD.