PC Power Supply Units (52 products)

It is essential you use the correct power supply for your computer. Whether you are 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 Power Supply Units

Showing 1 - 24 of 52 results
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Thermaltake Toughpower GF 750W - TT Premium Edition

  • 750W 80+ Gold
  • Ultra Quiet 140mm Hydraulic Bearing Fan
  • Fully Modular
  • Premium Japanese Capacitors
  • 10 Year Warranty

£ 82.49  inc. vat

£ 68.74 ex. vat

More Info

Aerocool Cylon 700w Semi-modular Psu 80+

  • Wattage: 700W
  • Semi-Modular
  • 80 PLUS White
  • 120mm Fan
  • 2 Year Warranty

£ 51.52  inc. vat

£ 42.93 ex. vat

More Info

Corsair RM850e 850W Fully Modular 80 Plus Gold Power Supply

  • 850W Fully Modular
  • 120mm Cooling Fan
  • 105c Rated Capacitors
  • Dual 8-Pin EPS12V Cables
  • 7 Year Warranty

£ 129.99  inc. vat

£ 108.32 ex. vat

0% Interest offers available

More Info

Corsair RM1000e 1000W Fully Modular 80 Plus Gold Power Supply

  • 1000W Fully Modular
  • 120mm Cooling Fan
  • 105c Rated Capacitors
  • Dual 8-Pin EPS12V Cables
  • 7 Year Warranty

£ 159.99  inc. vat

£ 133.32 ex. vat

0% Interest offers available

More Info

MSI MAG A650BN UK PSU 650W 80 Plus Bronze certified Sleeved non-modular cable

  • 2x Molex Connectors
  • 5x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4+4-Pin CPU Power Connector
  • ATX Form Factor

£ 54.99  inc. vat

£ 45.82 ex. vat

More Info

Thermaltake Toughpower GF 650 Watt 80+ Gold Fully Modular Power Supply

  • Full Modular 80 PLUS Gold
  • SLI/CrossFire
  • Single Rail
  • 140mm Fan
  • 10 Year Warranty

£ 74.99  inc. vat

£ 62.49 ex. vat

More Info

MSI MAG A550BN UK PSU 550W 80 Plus Bronze certified Sleeved non-modular cable

  • 2x Molex Connectors
  • 5x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4+4-Pin CPU Power Connector
  • ATX Form Factor

£ 59.30  inc. vat

£ 49.41 ex. vat

More Info

Corsair RM650i RMi Series 650 Watt Fully Modular Power Supply Unit (80 Plus Gold Certified)

  • 80 PLUS Gold certified
  • Fully Modular
  • Corsair Link monitoring and control
  • Dimensions 425 x 310 x 445 (mm)

£ 105.99  inc. vat

£ 88.32 ex. vat

0% Interest offers available

More Info

Thermaltake Toughpower GF 550 Watt 80+ Gold Fully Modular Power Supply

  • 550W 80+ Gold
  • Ultra Quiet 140mm Hydraulic Bearing Fan
  • Fully Modular
  • Premium Japanese Capacitors
  • 10 Year Warranty

£ 69.99  inc. vat

£ 58.32 ex. vat

More Info

Premium Braided 30cm PSU Extension Cable Kit - Black

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

£ 12.99  inc. vat

£ 10.82 ex. vat

More Info

Thermaltake Toughpower GF 750W - TT Premium Edition

    £ 72.99  inc. vat

    £84.99save £12.00

    £ 60.82 ex. vat

    £70.82save £10.00
    More Info

    Be Quiet! 700W System Power 9 PSU

    • Rock-solid stability with two strong 12V-rails
    • DC-to-DC technology for tight voltage regulation
    • Multi-GPU support with four PCIe connectors
    • Stand-by drain of less than 0.15 watts

    £ 65.39  inc. vat

    £ 54.49 ex. vat

    More Info

    Be Quiet! 600W System Power 9 PSU

    • Rock-solid stability with two strong 12V-rails
    • DC-to-DC technology for tight voltage regulation
    • Multi-GPU support with four PCIe connectors
    • 80PLUS® Bronze efficiency (up to 89%

    £ 57.23  inc. vat

    £62.33save £5.10

    £ 47.69 ex. vat

    £51.94save £4.25
    More Info

    Thermaltake Smart BM2 450 Watt Quiet Semi Modular 80+ Bronze Quiet PSU/Power Supply

    • Semi Modular
    • 80PLUS Bronze
    • Single Rail, 37.5A
    • 140mm Fan
    • ATX Form Factor

    £ 49.98  inc. vat

    £ 41.65 ex. vat

    More Info

    Thermaltake Toughpower PF1 850W 80+ Platinum ARGB Full Modular Power Supply

    • 80 Plus Platinum 850W Power Supply
    • Sync with Asus, Gigabyte, MSI and ASRock Boards
    • 100% Japanese Capacitors
    • 10 Year Warranty

    £ 174.99  inc. vat

    £ 145.82 ex. vat

    0% Interest offers available

    More Info

    Corsair HX1000 1000W 80+ Platinum Fully Modular Power Supply

    • 80 Plus Platinum
    • Fully Modular
    • Zero RPM Mode
    • 10 Year Warranty

    £ 225.93  inc. vat

    £ 188.27 ex. vat

    0% Interest offers available

    More Info

    EVGA 500 BQ Power Supply

    • 80 PLUS Bronze
    • Hybrid Modular
    • SLI/CrossFire Ready
    • Single Rail
    • 3 Year Warranty

    £ 68.96  inc. vat

    £ 57.46 ex. vat

    More Info

    EVGA 850 Watt BQ Semi Modular ATX PSU/Power Supply

    • Quiet and Intelligent Auto Fan for near-silent operation
    • NVIDIA SLI Ready
    • Fan Size / Bearing 140mm Teflon Nano-Steel Bearing
    • 5 Year Warranty

    £ 112.38  inc. vat

    £ 93.65 ex. vat

    0% Interest offers available

    More Info

    Thermaltake Smart BM2 750 Watt Quiet Semi-Modular 80+ Bronze PSU/Power Supply

    • Semi-Modular
    • 80PLUS Bronze
    • Single Rail, 62.5A
    • 140mm Fan
    • ATX Form Factor

    £ 70.98  inc. vat

    £ 59.15 ex. vat

    More Info

    Thermaltake Smart BM2 650 Watt Quiet Semi Modular 80+ Bronze PSU/Power Supply

    • Semi Modular
    • 80PLUS Bronze
    • Single Rail, 54A
    • 140mm Fan
    • ATX Form Factor

    £ 64.98  inc. vat

    £ 54.15 ex. vat

    More Info

    Thermaltake Smart BM2 550 Watt Quiet Semi Modular 80+ Bronze PSU/Power Supply

    • Semi Modular
    • 80PLUS Bronze
    • Single Rail, 45.5A
    • 140mm Fan
    • ATX Form Factor

    £ 54.99  inc. vat

    £ 45.82 ex. vat

    More Info

    MSI MPG A1000G 1000W 80 Plus Gold certified Fully Modular Power Supply

    • 4x Molex Connectors
    • 12x SATA Connectors
    • 7x PCIe Connectors (6+2-Pin)
    • 4+4+8-Pin CPU Power Connector
    • ATX Form Factor

    £ 168.93  inc. vat

    £ 140.77 ex. vat

    0% Interest offers available

    More Info

    Thermaltake Toughpower PF1 1050W ARGB Full Modular Power Supply

    • 80 Plus Platinum 1050W Power Supply
    • Sync with Asus, Gigabyte, MSI and ASRock Boards
    • 100% Japanese Capacitors
    • 10 Year Warranty

    £ 194.99  inc. vat

    £ 162.49 ex. vat

    0% Interest offers available

    More Info

    MSI MPG A750GF 750W Modular 80+ Gold PSU

    • 5x Molex Connectors
    • 8x SATA Connectors
    • 6x PCIe Connectors (6+2-Pin)
    • 4+4+8-Pin CPU Power Connector
    • ATX Form Factor

    £ 108.36  inc. vat

    £ 90.30 ex. vat

    0% Interest offers available

    More Info

    Thermaltake Toughpower GF 750W - TT Premium Edition

    • 750W 80+ Gold
    • Ultra Quiet 140mm Hydraulic Bearing Fan
    • Fully Modular
    • Premium Japanese Capacitors
    • 10 Year Warranty

    QuickFind: 1139886

    Mfr part code: PS-TPD-0750FNFAGK-2

    £ 82.49  inc. vat

    £ 68.74 ex. vat

    More Info

    Aerocool Cylon 700w Semi-modular Psu 80+

    • Wattage: 700W
    • Semi-Modular
    • 80 PLUS White
    • 120mm Fan
    • 2 Year Warranty

    QuickFind: 958729

    Mfr part code: ACPW-CM70AKC.11

    £ 51.52  inc. vat

    £ 42.93 ex. vat

    More Info

    Corsair RM850e 850W Fully Modular 80 Plus Gold Power Supply

    • 850W Fully Modular
    • 120mm Cooling Fan
    • 105c Rated Capacitors
    • Dual 8-Pin EPS12V Cables
    • 7 Year Warranty

    QuickFind: 1539701

    Mfr part code: CP-9020249-UK

    £ 129.99  inc. vat

    £ 108.32 ex. vat

    0% Interest offers available

    More Info

    Corsair RM1000e 1000W Fully Modular 80 Plus Gold Power Supply

    • 1000W Fully Modular
    • 120mm Cooling Fan
    • 105c Rated Capacitors
    • Dual 8-Pin EPS12V Cables
    • 7 Year Warranty

    QuickFind: 1539702

    Mfr part code: CP-9020250-UK

    £ 159.99  inc. vat

    £ 133.32 ex. vat

    0% Interest offers available

    More Info

    MSI MAG A650BN UK PSU 650W 80 Plus Bronze certified Sleeved non-modular cable

    • 2x Molex Connectors
    • 5x SATA Connectors
    • 2x PCIe Connectors (6+2-Pin)
    • 4+4-Pin CPU Power Connector
    • ATX Form Factor

    QuickFind: 1413126

    Mfr part code: MAG A650BN

    £ 54.99  inc. vat

    £ 45.82 ex. vat

    More Info

    Thermaltake Toughpower GF 650 Watt 80+ Gold Fully Modular Power Supply

    • Full Modular 80 PLUS Gold
    • SLI/CrossFire
    • Single Rail
    • 140mm Fan
    • 10 Year Warranty

    QuickFind: 1139880

    Mfr part code: PS-TPD-0650FNFAGK-2

    £ 74.99  inc. vat

    £ 62.49 ex. vat

    More Info

    MSI MAG A550BN UK PSU 550W 80 Plus Bronze certified Sleeved non-modular cable

    • 2x Molex Connectors
    • 5x SATA Connectors
    • 2x PCIe Connectors (6+2-Pin)
    • 4+4-Pin CPU Power Connector
    • ATX Form Factor

    QuickFind: 1413127

    Mfr part code: MAG A550BN

    £ 59.30  inc. vat

    £ 49.41 ex. vat

    More Info

    Corsair RM650i RMi Series 650 Watt Fully Modular Power Supply Unit (80 Plus Gold Certified)

    • 80 PLUS Gold certified
    • Fully Modular
    • Corsair Link monitoring and control
    • Dimensions 425 x 310 x 445 (mm)

    QuickFind: 715152

    Mfr part code: CP-9020081-UK

    £ 105.99  inc. vat

    £ 88.32 ex. vat

    0% Interest offers available

    More Info

    Thermaltake Toughpower GF 550 Watt 80+ Gold Fully Modular Power Supply

    • 550W 80+ Gold
    • Ultra Quiet 140mm Hydraulic Bearing Fan
    • Fully Modular
    • Premium Japanese Capacitors
    • 10 Year Warranty

    QuickFind: 1139879

    Mfr part code: PS-TPD-0550FNFAGK-2

    £ 69.99  inc. vat

    £ 58.32 ex. vat

    More Info

    Premium Braided 30cm PSU Extension Cable Kit - Black

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

    QuickFind: 912961

    Mfr part code: PSUBLACK

    £ 12.99  inc. vat

    £ 10.82 ex. vat

    More Info

    Thermaltake Toughpower GF 750W - TT Premium Edition

      QuickFind: 1416564

      Mfr part code: PS-TPD-0750FNFAGK-2-BUNDLE

      £ 72.99  inc. vat

      £84.99save £12.00

      £ 60.82 ex. vat

      £70.82save £10.00
      More Info

      Be Quiet! 700W System Power 9 PSU

      • Rock-solid stability with two strong 12V-rails
      • DC-to-DC technology for tight voltage regulation
      • Multi-GPU support with four PCIe connectors
      • Stand-by drain of less than 0.15 watts

      QuickFind: 859750

      Mfr part code: BN248

      £ 65.39  inc. vat

      £ 54.49 ex. vat

      More Info

      Be Quiet! 600W System Power 9 PSU

      • Rock-solid stability with two strong 12V-rails
      • DC-to-DC technology for tight voltage regulation
      • Multi-GPU support with four PCIe connectors
      • 80PLUS® Bronze efficiency (up to 89%

      QuickFind: 859749

      Mfr part code: BN247

      £ 57.23  inc. vat

      £62.33save £5.10

      £ 47.69 ex. vat

      £51.94save £4.25
      More Info

      Thermaltake Smart BM2 450 Watt Quiet Semi Modular 80+ Bronze Quiet PSU/Power Supply

      • Semi Modular
      • 80PLUS Bronze
      • Single Rail, 37.5A
      • 140mm Fan
      • ATX Form Factor

      QuickFind: 1538328

      Mfr part code: PS-SPD-0450MNFABK-1

      £ 49.98  inc. vat

      £ 41.65 ex. vat

      More Info

      Thermaltake Toughpower PF1 850W 80+ Platinum ARGB Full Modular Power Supply

      • 80 Plus Platinum 850W Power Supply
      • Sync with Asus, Gigabyte, MSI and ASRock Boards
      • 100% Japanese Capacitors
      • 10 Year Warranty

      QuickFind: 1139882

      Mfr part code: PS-TPD-0850F3FAPK-1

      £ 174.99  inc. vat

      £ 145.82 ex. vat

      0% Interest offers available

      More Info

      Corsair HX1000 1000W 80+ Platinum Fully Modular Power Supply

      • 80 Plus Platinum
      • Fully Modular
      • Zero RPM Mode
      • 10 Year Warranty

      QuickFind: 788621

      Mfr part code: CP-9020139-UK

      £ 225.93  inc. vat

      £ 188.27 ex. vat

      0% Interest offers available

      More Info

      EVGA 500 BQ Power Supply

      • 80 PLUS Bronze
      • Hybrid Modular
      • SLI/CrossFire Ready
      • Single Rail
      • 3 Year Warranty

      QuickFind: 768921

      Mfr part code: 110-BQ-0500-K3

      £ 68.96  inc. vat

      £ 57.46 ex. vat

      More Info

      EVGA 850 Watt BQ Semi Modular ATX PSU/Power Supply

      • Quiet and Intelligent Auto Fan for near-silent operation
      • NVIDIA SLI Ready
      • Fan Size / Bearing 140mm Teflon Nano-Steel Bearing
      • 5 Year Warranty

      QuickFind: 756501

      Mfr part code: 110-BQ-0850-V3

      £ 112.38  inc. vat

      £ 93.65 ex. vat

      0% Interest offers available

      More Info

      Thermaltake Smart BM2 750 Watt Quiet Semi-Modular 80+ Bronze PSU/Power Supply

      • Semi-Modular
      • 80PLUS Bronze
      • Single Rail, 62.5A
      • 140mm Fan
      • ATX Form Factor

      QuickFind: 1538331

      Mfr part code: PS-SPD-0750MNFABK-1

      £ 70.98  inc. vat

      £ 59.15 ex. vat

      More Info

      Thermaltake Smart BM2 650 Watt Quiet Semi Modular 80+ Bronze PSU/Power Supply

      • Semi Modular
      • 80PLUS Bronze
      • Single Rail, 54A
      • 140mm Fan
      • ATX Form Factor

      QuickFind: 1538330

      Mfr part code: PS-SPD-0650MNFABK-1

      £ 64.98  inc. vat

      £ 54.15 ex. vat

      More Info

      Thermaltake Smart BM2 550 Watt Quiet Semi Modular 80+ Bronze PSU/Power Supply

      • Semi Modular
      • 80PLUS Bronze
      • Single Rail, 45.5A
      • 140mm Fan
      • ATX Form Factor

      QuickFind: 1538329

      Mfr part code: PS-SPD-0550MNFABK-1

      £ 54.99  inc. vat

      £ 45.82 ex. vat

      More Info

      MSI MPG A1000G 1000W 80 Plus Gold certified Fully Modular Power Supply

      • 4x Molex Connectors
      • 12x SATA Connectors
      • 7x PCIe Connectors (6+2-Pin)
      • 4+4+8-Pin CPU Power Connector
      • ATX Form Factor

      QuickFind: 1424366

      Mfr part code: MPG A1000G

      £ 168.93  inc. vat

      £ 140.77 ex. vat

      0% Interest offers available

      More Info

      Thermaltake Toughpower PF1 1050W ARGB Full Modular Power Supply

      • 80 Plus Platinum 1050W Power Supply
      • Sync with Asus, Gigabyte, MSI and ASRock Boards
      • 100% Japanese Capacitors
      • 10 Year Warranty

      QuickFind: 1139883

      Mfr part code: PS-TPD-1050F3FAPK-1

      £ 194.99  inc. vat

      £ 162.49 ex. vat

      0% Interest offers available

      More Info

      MSI MPG A750GF 750W Modular 80+ Gold PSU

      • 5x Molex Connectors
      • 8x SATA Connectors
      • 6x PCIe Connectors (6+2-Pin)
      • 4+4+8-Pin CPU Power Connector
      • ATX Form Factor

      QuickFind: 1128799

      Mfr part code: MPG A750GF

      £ 108.36  inc. vat

      £ 90.30 ex. vat

      0% Interest offers available

      More Info
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      Power Supplies for your system

      If your power supply does not provide enough power for your system, it can cause serious performance issues or system errors. Whether you are building your own PC, or need to replace a faulty power supply, it is important to work out the type and wattage of the power supply you need. It is important to check the efficiency rating of your power supply; 80%+ efficiency PSUs are a better option, as they waste less electricity, and do not create as much heat inside your system. You should also consider whether you are 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 will 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 is 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 does not 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.

      What parts are powered by the computer PSU?

      The motherboard, CPU, RAM disc drives, hard drive and more or less everything contained in the computer chassis are powered by the power supply. All the external devices such as printers and monitors have a standard power source such as the mains power supply. If you have a laptop or an All-in-one computer, the display is powered by the computer power supply.

      Does the fan use a power supply?

      Whenever your computer is on then the fan should always be running. If the fan is not moving, and by moving we mean spinning, then your computer needs attention. Either the fan itself is broken or the power supply needs looking at. There are certain power supplies which have variable controls, and these can increase or decrease the speed of your fan depending on its temperature inside the computer. The main point though is that your fan (or fans) must ALWAYS be spinning.

      Is it OK to leave your computer on overnight?

      It is always a good idea to turn off your computer overnight. For a start, it saves using your electricity unnecessarily. Sometimes, you may need to keep your computer on, for example for updates, security scanning and doing backups. Alternatively, you could do these tasks during the day if you are not planning to use your computer for certain periods.

      Does turning off a computer wear down the power switch?

      Prior to 1994 there were issues with power buttons breaking easily, which made people apprehensive about actually turning off their computer. Today, problems like that are a thing of the past. Of course, power buttons can still wear out, but the truth is, they have a lifecycle which outlasts many of the other components in your computer, so there is nothing to worry about.

      Can turning off your computer cause soldering cracks?

      No. Soldering can withstand changes of temperature easily. Most people have multiple TVs in their homes and these are turned on and off all the time, so you can see that it can withstand all the daily operations without any problems at all.

      Can you prevent a power surge by turning off your computer?

      No, a power surge will happen regardless of what you do with your computer. Having your computer power cord connected to a surge protector can safeguard a computer from an electrical surge. And thus from any potential damage. To prevent any damage to your computer during storms, blackouts or other power-related problems, use a UPS (uninterruptable power supply) which will provide you with power for an amount of time, during which the issues will hopefully be solved.