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.
The graphics card is by far and away the most power-hungry components in a PC, so you can use the table below as a guide to what size PSU is right for you. Simply read across the columns till you find the graphics card you own or intend to buy. Don’t forget you also need to leave plenty of headroom for the CPU and other components in the PC too.
NVIDIA Geforce Graphics Card
3050, 3060, 4060 Ti
3060 Ti
3070, 4070
4070 Ti
3070 Ti, 3080, 4080
4090
AMD Radeon Graphics Card
6400
6500 XT
6600
6600 XT, 6650 XT
7600
6700 XT, 6750 XT, 6800
6800 XT, 7900 XT
6900 XT, 6950 XT, 7900 XT
Recommended PSU
350W+
400W+
450W+
500W+
550W+
600W+
650W+
700W+
750W+
800W+
850W+
600W to 780W ATX Power Supplies for Single GPU PCs
PSUs (Power Supply Units) supply electricity to the components inside your system. It's important to pick a good-quality PSU to ensure a stable supply of power, low noise and not to waste too much electricity.
In this category you'll find a variety of ATX 2.x PSUs which are rated up to deliver between 600 and to 780W, making them suitable for PCs with a mid-range GPU.
Start by checking how many Watts (W for short) your system requires. You can find this information in your component documentation or our buyers guide.
It's also essential to pick a PSU with the right connections for all the components in your system. Choosing a PSU with modular cables will save space inside your system, aiding cooling.
It’s also important to look at efficiency, which can be seen in a PSU’s 80 PLUS rating. More efficient PSUs waste less electricity as well as running quieter and cooler.