The power-supply unit, or PSU, powers all the components inside your PC. The main thing you need to know when shopping is the approximate wattage your system will consume, so roughly tally up the power consumption of your various components. It is recommended to over-spec a little to ensure reliable operation, and get a little extra for future upgrades. Also check that the PSU comes with enough connections for your build, and that it will fit inside your chassis. Modular PSUs allow you to minimise excess cabling by only having the connections you need attached, meaning your PC will not only look more professional but will also run cooler. The quality of a PSU can be indirectly derived by looking at its 80 PLUS rating, which defines its efficiency, with Bronze, Silver, Gold, Platinum and Titanium categories indicating ever-increasing power efficiency.
A power supply, or PSU, is the component that provides power to everything else inside your PC – and so it’s a crucial. Power supplies include a range of cables to plug into all of the standard components inside a computer. Some PSUs have modular cables, so you only need to fit the cables to you need, resulting in a neater build and better airflow inside the PC.
PSUs are also rated for efficiency, with a more efficient model consuming less power. The ratings go from Bronze to Silver, Gold, Platinum and Titanium.
These PSUs provide up to 500W or 550W of power, making them ideal for gaming PCs and professional workstations with a single graphics card.
- 500W Seasonic PRIME Fanless PX, Full Modular, 80 PLUS Platinum, SLI/CrossFire, Single Rail, 41A, ATX PSU£139.99£5.48 NEXT DAY DELIVERYIn stock
An Uninterruptible Power Supply is a backup power unit which provides a continuous clean power supply to your computer system. As well as the clean power supply, in the event of a power failure the unit contains its own battery and will continue to power your computer system for a certain length of time. Advanced features to look out for include auto shutdown features to ensure the safe shutdown of your computer system in the event of a power failure. These units are free standing.