450-550W Power Supplies

A 450W to 550W power supply is ideal for budget and office builds, or gaming PCs with an efficient mid-range or entry graphics card. Our range of 500W and 550W units covers trusted brands with solid 80 Plus efficiency and quiet operation, all in UK stock with a full warranty and a live price on each listing. A quality lower-wattage PSU is a safer bet than an unbranded one of the same rating. Not sure what wattage you need? Our power supply guide works it out with you.