How to choose the perfect power supply

The power supply, also known as the PSU (power supply unit), converts the 230V AC from the mains wall socket in your home to the various DC voltages the different components in your PC requires. Power supplies are rated by how much power, measured in watts, they output - however this will not always be constant - for instance, your PC might only need 150W when you’re watching YouTube but could need 500W when you fire up a game. As a general rule its best to choose a power supply with some power to spare. This is because power supplies work more efficiently at medium load levels.

Power Supplies

Efficient power supplies for high-performance gaming PCs

As every PC component draws a different amount of power, it is important to choose a power supply that has sufficient power to cope with the requirements from the components within your PC. Many power supply manufacturers provide calculators on their websites, which will recommend a power supply, based on your PC configuration. The below table offers some guidance as to your PC specification.

My PC has
1 CPU
amd-ryzen
1 CPU
amd-ryzen
1 CPU
amd-ryzen
1 CPU
amd-ryzen
1 CPU
amd-ryzen
Plus...
Integrated graphics 1 x Entry-level to Mid-range Graphics Card 1 x High-end Graphics Card 2 x Graphics Cards 4 x Graphics Cards
Recommended PSU wattage
Under 450W 450W or more 550W or more 850W or more 1600W or more

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800W to 880W ATX Power Supplies for Multi GPU PCs

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 800W or more of power, making them ideal for high-end gaming PCs and professional workstations with a dual-graphics card configurations.

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1000W Plus ATX Power Supplies for Extreme PC Builds

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 1000W, 1200W, 1300W, 1500W & even 1600W PSUs provide unparalled power, making them ideal for high-end gaming PCs and professional workstations with a multiple graphics cards and CPUs.

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Tekspek An in-depth guide into tech: Power Supply units