PC Computer Power Supply Units (9 products)

It's essential you use the correct power supply for your computer. Whether you're upgrading, building a new set up, or have a broken supply, we have plenty of high-quality, low cost power supplies available at Ebuyer.

Read more about PC Computer Power Supply Units

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Antec 500W VP500P Plus Power Supply

  • Continuous power - guaranteed 500W continuous power from Antec...
  • 80 PLUS 230V Standard certified - up to 85% efficient, to reduce your...
  • AQ3 - Antec quality 3 year Warranty

£ 45.48  inc. vat

£49.53save £4.05

£ 37.90 ex. vat

£41.27save £3.37
More Info

Antec 550W EA550G PRO EarthWatts Gold Pro PSU

  • 80 Plus Gold Certified
  • Semi Modular
  • 100% Japanese Capacitors
  • Whisper-quiet, high-quality fan
  • 7 Year Warranty

£ 76.02  inc. vat

£ 63.35 ex. vat

More Info

Antec VP 400 PC EC

  • 400W Continuous Power
  • Up to 82% efficient
  • 120 mm Silence
  • Heavy-duty Caps

£ 34.26  inc. vat

£ 28.55 ex. vat

More Info

Antec NE550M GB Semi Modular 80 BRONZE PSU

  • 550W Continuous Power
  • 80 PLUS BRONZE
  • Advanced hybrid cable management
  • Antec Quality 3 year warranty

£ 64.23  inc. vat

£68.63save £4.40

£ 53.52 ex. vat

£57.19save £3.67
More Info

Antec VP700P Plus -GB 80+ PSU

£ 59.49  inc. vat

£ 49.57 ex. vat

More Info

Xenta 600W 80+ Power Supply Unit 230V with 12cm FAN

    £ 28.48  inc. vat

    £ 23.73 ex. vat

    More Info

    Xenta 400W 80+ Power Supply Unit 230V 12cm Fan

      £ 22.97  inc. vat

      £ 19.14 ex. vat

      More Info

      Xenta 500W 8+ Power Supply Unit 230V 12cm Fan

        £ 25.97  inc. vat

        £ 21.64 ex. vat

        More Info

        EXDISPLAY Premium Braided 30cm PSU Extension Cable Kit - Blue

        • 24pin
        • 6pin
        • 4+4pin
        • 6+2pin

        £ 10.94  inc. vat

        £ 9.11 ex. vat

        More Info

        Antec 500W VP500P Plus Power Supply

        • Continuous power - guaranteed 500W continuous power from Antec...
        • 80 PLUS 230V Standard certified - up to 85% efficient, to reduce your...
        • AQ3 - Antec quality 3 year Warranty

        QuickFind: 958302

        Mfr part code: 0-761345-11653-4

        £ 45.48  inc. vat

        £49.53save £4.05

        £ 37.90 ex. vat

        £41.27save £3.37
        More Info

        Antec 550W EA550G PRO EarthWatts Gold Pro PSU

        • 80 Plus Gold Certified
        • Semi Modular
        • 100% Japanese Capacitors
        • Whisper-quiet, high-quality fan
        • 7 Year Warranty

        QuickFind: 810565

        Mfr part code: 0-761345-11615-2

        £ 76.02  inc. vat

        £ 63.35 ex. vat

        More Info

        Antec VP 400 PC EC

        • 400W Continuous Power
        • Up to 82% efficient
        • 120 mm Silence
        • Heavy-duty Caps

        QuickFind: 722891

        Mfr part code: 0-761345-06487-3

        £ 34.26  inc. vat

        £ 28.55 ex. vat

        More Info

        Antec NE550M GB Semi Modular 80 BRONZE PSU

        • 550W Continuous Power
        • 80 PLUS BRONZE
        • Advanced hybrid cable management
        • Antec Quality 3 year warranty

        QuickFind: 789916

        Mfr part code: 0-761345-10573-6

        £ 64.23  inc. vat

        £68.63save £4.40

        £ 53.52 ex. vat

        £57.19save £3.67
        More Info

        Antec VP700P Plus -GB 80+ PSU

        QuickFind: 982906

        Mfr part code: 0-761345-11659-6

        £ 59.49  inc. vat

        £ 49.57 ex. vat

        More Info

        Xenta 600W 80+ Power Supply Unit 230V with 12cm FAN

          QuickFind: 966446

          Mfr part code: XEN - 600W

          £ 28.48  inc. vat

          £ 23.73 ex. vat

          More Info

          Xenta 400W 80+ Power Supply Unit 230V 12cm Fan

            QuickFind: 966444

            Mfr part code: XEN-400W

            £ 22.97  inc. vat

            £ 19.14 ex. vat

            More Info

            Xenta 500W 8+ Power Supply Unit 230V 12cm Fan

              QuickFind: 966445

              Mfr part code: XEN-500W

              £ 25.97  inc. vat

              £ 21.64 ex. vat

              More Info

              EXDISPLAY Premium Braided 30cm PSU Extension Cable Kit - Blue

              • 24pin
              • 6pin
              • 4+4pin
              • 6+2pin

              QuickFind: 981448

              Mfr part code: EBR1-PSUBLUE

              £ 10.94  inc. vat

              £ 9.11 ex. vat

              More Info
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              If your power supply doesn't provide enough power for your system, it can cause serious performance issues or system errors. Whether you're building your own PC, or need to replace a faulty power supply, it's important to work out the type and wattage of the power supply you need.

              It's important to check the efficiency rating of your power supply; 80%+ efficiency PSUs are a better option, as they waste less electricity, and don't create as much heat inside your system. You should also consider whether you're looking for a modular or non-modular power supply - this will impact the way you build your system, manage cables, and upgrade in the future.

              How do I know which power supply I need for a computer?

              Which power supply you should buy depends on the components in your computer, and what you use the system for. Generally speaking, you should aim for a power supply that delivers a wattage at least 40% greater than the wattage used by your hardware combined.

              You'll also need to consider the processes you use your computer for - your system will work harder when running more demanding programs or games, and therefore will require more power. As a result, gamers and designers will need more headroom than those who use their computers for social media or admin tasks.

              What is the power supply on a computer?

              The power supply unit (PSU) in your computer converts alternating current (AC) from your plug socket into a continuous current (DC) to run the hardware in your computer. It's essentially the system that provides electricity to your set up, allowing it to power on. A low quality or under-powered PSU will cause erratic performance, and potentially damage your system.

              What voltage is a PC power supply?

              The power supply itself doesn't have voltage - it converts voltage from the plug socket into a low voltage direct current (DC). In Europe, this is usually around 220-240 volts, and the DC it is converted to will vary.