PC Computer Power Supply Units (16 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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Corsair SF450 Platinum Fully Modular SFX Power Supply

  • Compact SFX Form-Factor
  • Individually Sleeved, Fully Modular Cables
  • 80 Plus Platinum Certified
  • 100% Japanese Capacitors
  • Zero RPM Fan Mode

£ 97.14  inc. vat

£ 80.95 ex. vat

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Corsair HX1000 1000W 80+ Platinum Fully Modular Power Supply

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

£ 184.49  inc. vat

£ 153.74 ex. vat

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Thermaltake Toughpower 850 Watt Full Modular 80+ Platinum ARGB PSU/Power Supply

  • 850 W 80 PLUS Platinum
  • 1 x 140mm w/ Addressable RGB LEDs
  • 150 x 86 x 180 (WxHxD)

£ 233.99  inc. vat

£ 194.99 ex. vat

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Corsair HX750 - 750 Watt Fully Modular PSU

  • 80 PLUS® Platinum efficiency
  • Zero RPM Fan Mode
  • Quiet, efficient operation
  • Easy Installation

£ 156.99  inc. vat

£ 130.82 ex. vat

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Corsair HX1200i High Performance Series (1200 Watt) 80 Plus Platinum ATX Power Supply Unit

  • HXi Series HX1200i High-Performance ATX Power Supply
  • 1200 Watt 80 Plus Platinum Certified PSU
  • Zero RPM Fan Mode

£ 256.47  inc. vat

£ 213.72 ex. vat

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BeQuiet Silent Wings Dark Power Pro 11 750W Power Supply

  • Black Coloured PSU with a 135mm Cooling Fan
  • Equipped with a Single 12v Rail
  • 80 Plus platinum

£ 172.98  inc. vat

£ 144.15 ex. vat

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Corsair AX1600i 1600W Modular 80+ Titanium PSU

  • 9x Molex Connectors
  • 16x SATA Connectors
  • 10x PCIe Connectors (6+2-Pin)
  • Modular Cable System
  • ATX Form Factor

£ 413.31  inc. vat

£ 344.42 ex. vat

Finance from per month.
( APR) representative

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Evga Supernova 1000w T2 80+ Titanium Power Supply

  • 80 Plus Platinum
  • Fully Modular
  • Advanced Hybrid Cable Management
  • PowerCache
  • Extreme Voltage and Fan Tuning

£ 253.66  inc. vat

£ 211.38 ex. vat

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Corsair AX850 850 Watt 80 Plus Titanium Fully Modular ATX Power Supply

  • 80 Plus Titanium Certified
  • 100% Japanese 105'c Capacitors
  • Zero RPM Fan Mode
  • 135mm Cooling Fan
  • Fully Modular Cables

£ 178.47  inc. vat

£ 148.72 ex. vat

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Be Quiet! 850W Modular PSU - Dark Power Pro 11

  • Fluid 135mm SilentWings® 3 Fan
  • Equipped with a Single 12v Rail
  • 80 Plus Platinum
  • Modular Design
  • SLI/XFire Ready

£ 245.99  inc. vat

£ 204.99 ex. vat

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EVGA SuperNOVA 850 T2 Power Supply

  • Advanced Hybrid Cable Management
  • PowerCache
  • Extreme Voltage and Fan Tuning

£ 201.39  inc. vat

£ 167.82 ex. vat

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Corsair HX1200 - 1200 Watt Fully Modular

  • 80 PLUS® Platinum efficiency
  • Zero RPM Fan Mode
  • Quiet, efficient operation
  • Easy Installation

£ 203.99  inc. vat

£ 169.99 ex. vat

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Be Quiet! 550W Modular PSU - Dark Power Pro 11

  • Equipped with a Single 12v Rail
  • Quiet SilentWings 3 fan
  • Hybrid Modular Design
  • 80 Plus platinum

£ 154.49  inc. vat

£ 128.74 ex. vat

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Be Quiet! 650W Modular PSU - BN251 Dark Power Pro 11

  • Black Coloured PSU with a 135mm Cooling Fan
  • Equipped with a Single 12v Rail
  • 80 Plus platinum
  • SLI/XFire Ready

£ 145.43  inc. vat

£ 121.19 ex. vat

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Be Quiet! 1000W Modular PSU - Dark Power Pro 11

  • Fluid 135mm SilentWings® 3 Fan
  • Equipped with a Single 12v Rail
  • 80 Plus Platinum
  • Modular Design
  • SLI/XFire Ready

£ 264.99  inc. vat

£ 220.82 ex. vat

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Seasonic Focus PX-550 550W 80+ Platinum Modular Power Supply

  • High-efficiency thanks to 80 PLUS Platinum certification
  • Powerful 45A single rail
  • Modular cable management with flat cables
  • 10 Year manufacturer's guarantee

£ 116.49  inc. vat

£ 97.07 ex. vat

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Corsair SF450 Platinum Fully Modular SFX Power Supply

  • Compact SFX Form-Factor
  • Individually Sleeved, Fully Modular Cables
  • 80 Plus Platinum Certified
  • 100% Japanese Capacitors
  • Zero RPM Fan Mode

QuickFind: 882202

Mfr part code: CP-9020181-UK

£ 97.14  inc. vat

£ 80.95 ex. vat

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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

£ 184.49  inc. vat

£ 153.74 ex. vat

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Thermaltake Toughpower 850 Watt Full Modular 80+ Platinum ARGB PSU/Power Supply

  • 850 W 80 PLUS Platinum
  • 1 x 140mm w/ Addressable RGB LEDs
  • 150 x 86 x 180 (WxHxD)

QuickFind: 914024

Mfr part code: PS-TPD-0850F3FAPE-1

£ 233.99  inc. vat

£ 194.99 ex. vat

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Corsair HX750 - 750 Watt Fully Modular PSU

  • 80 PLUS® Platinum efficiency
  • Zero RPM Fan Mode
  • Quiet, efficient operation
  • Easy Installation

QuickFind: 788619

Mfr part code: CP-9020137-UK

£ 156.99  inc. vat

£ 130.82 ex. vat

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Corsair HX1200i High Performance Series (1200 Watt) 80 Plus Platinum ATX Power Supply Unit

  • HXi Series HX1200i High-Performance ATX Power Supply
  • 1200 Watt 80 Plus Platinum Certified PSU
  • Zero RPM Fan Mode

QuickFind: 700189

Mfr part code: CP-9020070-UK

£ 256.47  inc. vat

£ 213.72 ex. vat

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BeQuiet Silent Wings Dark Power Pro 11 750W Power Supply

  • Black Coloured PSU with a 135mm Cooling Fan
  • Equipped with a Single 12v Rail
  • 80 Plus platinum

QuickFind: 728219

Mfr part code: BN252

£ 172.98  inc. vat

£ 144.15 ex. vat

More Info

Corsair AX1600i 1600W Modular 80+ Titanium PSU

  • 9x Molex Connectors
  • 16x SATA Connectors
  • 10x PCIe Connectors (6+2-Pin)
  • Modular Cable System
  • ATX Form Factor

QuickFind: 843896

Mfr part code: CP-9020087-UK

£ 413.31  inc. vat

£ 344.42 ex. vat

Finance from per month.
( APR) representative

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Evga Supernova 1000w T2 80+ Titanium Power Supply

  • 80 Plus Platinum
  • Fully Modular
  • Advanced Hybrid Cable Management
  • PowerCache
  • Extreme Voltage and Fan Tuning

QuickFind: 857503

Mfr part code: 220-T2-1000-X3

£ 253.66  inc. vat

£ 211.38 ex. vat

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Corsair AX850 850 Watt 80 Plus Titanium Fully Modular ATX Power Supply

  • 80 Plus Titanium Certified
  • 100% Japanese 105'c Capacitors
  • Zero RPM Fan Mode
  • 135mm Cooling Fan
  • Fully Modular Cables

QuickFind: 874510

Mfr part code: CP-9020151-UK

£ 178.47  inc. vat

£ 148.72 ex. vat

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Be Quiet! 850W Modular PSU - Dark Power Pro 11

  • Fluid 135mm SilentWings® 3 Fan
  • Equipped with a Single 12v Rail
  • 80 Plus Platinum
  • Modular Design
  • SLI/XFire Ready

QuickFind: 728220

Mfr part code: BN253

£ 245.99  inc. vat

£ 204.99 ex. vat

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EVGA SuperNOVA 850 T2 Power Supply

  • Advanced Hybrid Cable Management
  • PowerCache
  • Extreme Voltage and Fan Tuning

QuickFind: 759093

Mfr part code: 220-T2-0850-X3

£ 201.39  inc. vat

£ 167.82 ex. vat

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Corsair HX1200 - 1200 Watt Fully Modular

  • 80 PLUS® Platinum efficiency
  • Zero RPM Fan Mode
  • Quiet, efficient operation
  • Easy Installation

QuickFind: 788622

Mfr part code: CP-9020140-UK

£ 203.99  inc. vat

£ 169.99 ex. vat

More Info

Be Quiet! 550W Modular PSU - Dark Power Pro 11

  • Equipped with a Single 12v Rail
  • Quiet SilentWings 3 fan
  • Hybrid Modular Design
  • 80 Plus platinum

QuickFind: 728215

Mfr part code: BN250

£ 154.49  inc. vat

£ 128.74 ex. vat

More Info

Be Quiet! 650W Modular PSU - BN251 Dark Power Pro 11

  • Black Coloured PSU with a 135mm Cooling Fan
  • Equipped with a Single 12v Rail
  • 80 Plus platinum
  • SLI/XFire Ready

QuickFind: 728218

Mfr part code: BN251

£ 145.43  inc. vat

£ 121.19 ex. vat

More Info

Be Quiet! 1000W Modular PSU - Dark Power Pro 11

  • Fluid 135mm SilentWings® 3 Fan
  • Equipped with a Single 12v Rail
  • 80 Plus Platinum
  • Modular Design
  • SLI/XFire Ready

QuickFind: 728222

Mfr part code: BN254

£ 264.99  inc. vat

£ 220.82 ex. vat

More Info

Seasonic Focus PX-550 550W 80+ Platinum Modular Power Supply

  • High-efficiency thanks to 80 PLUS Platinum certification
  • Powerful 45A single rail
  • Modular cable management with flat cables
  • 10 Year manufacturer's guarantee

QuickFind: 919252

Mfr part code: FOCUS-PX-550

£ 116.49  inc. vat

£ 97.07 ex. vat

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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.