virransyöttöosioon

Virransyöttöosio refers to the power supply unit, often abbreviated as PSU, in a computer system. This crucial component is responsible for converting the alternating current (AC) from a wall outlet into the direct current (DC) voltages required by the various components within the computer, such as the motherboard, CPU, graphics card, and storage drives. Without a functioning power supply unit, the computer cannot operate.

PSUs come in various wattage ratings, indicating the maximum amount of power they can deliver. The required wattage depends on the power consumption of the computer's components; a more powerful system with a high-end graphics card will necessitate a higher wattage PSU. They also vary in efficiency ratings, such as 80 Plus Bronze, Silver, Gold, Platinum, and Titanium, which denote how effectively they convert AC power to DC power, with higher ratings meaning less energy is wasted as heat.

The physical form factor of a PSU, such as ATX, SFX, or TFX, determines its size and shape, influencing its compatibility with different computer case sizes. Some PSUs are modular, meaning that the cables can be detached when not needed, allowing for cleaner cable management and improved airflow within the case. Others are non-modular, with all cables permanently attached. The reliability and quality of a PSU are essential for the stable operation and longevity of a computer system, as a faulty PSU can potentially damage other components.