PC Computer Power Supply Units (27 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

Showing 1 - 24 of 27 results
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Corsair AX1000 1000 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

£ 205.65  inc. vat

£ 171.37 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

£ 380.01  inc. vat

£ 316.67 ex. vat

Finance from per month.
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EVGA SuperNOVA 850 T2 Power Supply

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

£ 199.42  inc. vat

£ 166.18 ex. vat

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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

£ 234.99  inc. vat

£ 195.82 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

£189.48save £11.01

£ 148.72 ex. vat

£157.90save £9.18
More Info

Corsair HX850i 850 Watt Power Supply

  • 80 PLUS Platinum efficiency, delivering 92% energy efficiency at real...
  • 140mm thermally controlled fluid dynamic bearing fan spins up as...

£ 156.48  inc. vat

£166.24save £9.76

£ 130.40 ex. vat

£138.53save £8.13
More Info

Corsair HX850 - 850 Watt Fully Modular PSU

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

£ 146.37  inc. vat

£160.11save £13.74

£ 121.97 ex. vat

£133.42save £11.45
More Info

Corsair HX1000i High Performance Series (1000 Watt) 80 Plus Platinum Atx Power Supply Unit

  • ZeroRPM mode for fanless operation at low loads
  • 140mm thermally controlled fluid dynamic bearing
  • 80 PLUS Platinum efficiency

£ 197.99  inc. vat

£ 164.99 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

£ 217.98  inc. vat

£239.03save £21.05

£ 181.65 ex. vat

£199.19save £17.54
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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

£ 157.12  inc. vat

£ 130.93 ex. vat

More Info

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

£ 200.99  inc. vat

£ 167.49 ex. vat

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Be Quiet! 1200W 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

£ 231.99  inc. vat

£ 193.32 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

£ 131.99  inc. vat

£ 109.99 ex. vat

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Seasonic Focus PX-750 750W 80+ Platinum Modular Power Supply

  • 80 PLUS Platinum certification
  • Powerful 70A single rail Modular cable management with flat cables...
  • 10 Year manufacturer's guarantee
  • Four 6+2-pin PCIe connectors for graphics cards

£ 140.00  inc. vat

£ 116.66 ex. vat

More Info

Corsair HX750i 750 Watt Power Supply

  • 80 PLUS Platinum efficiency, delivering 92% energy efficiency at real...
  • ZeroRPM mode for fan-less operation at low loads and outstanding noise...

£ 140.00  inc. vat

£154.28save £14.28

£ 116.66 ex. vat

£128.56save £11.90
More Info

Corsair HX1000 1000W 80+ Platinum Fully Modular Power Supply

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

£ 158.49  inc. vat

£ 132.07 ex. vat

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EVGA Supernova 1200W Fully Modular 80+ Platinum Power Supply

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with 2 x 12v Rails Delivering upto 99.9 Amps per Rail...
  • Equipped with 6 x 8pin & 2 x 6pin PCI-E Connectors for Graphics Cards...

£ 335.99  inc. vat

£ 279.99 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)

£ 203.37  inc. vat

£ 169.47 ex. vat

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Thermaltake Toughpower 1200 Watt Full Modular 80+ Platinum ARGB PSU/Power Supply

  • 1200 W 80 PLUS Platinum
  • 1 x 140mm w/ Addressable RGB LEDs
  • 150 x 86 x 180 (WxHxD)

£ 284.60  inc. vat

£ 237.16 ex. vat

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Seasonic Focus PX-650 650W 80+ Platinum Modular Power Supply

  • 80 PLUS Platinum certification
  • Powerful 70A single rail
  • Modular cable management with flat cables
  • 10 Year manufacturer's guarantee

£ 119.96  inc. vat

£ 99.96 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

£ 112.98  inc. vat

£ 94.15 ex. vat

More Info

Corsair HX1200 - 1200 Watt Fully Modular

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

£ 179.49  inc. vat

£ 149.57 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

£ 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

£ 209.68  inc. vat

£ 174.73 ex. vat

More Info

Corsair AX1000 1000 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: 874511

Mfr part code: CP-9020152-UK

£ 205.65  inc. vat

£ 171.37 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

£ 380.01  inc. vat

£ 316.67 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

£ 199.42  inc. vat

£ 166.18 ex. vat

More Info

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

£ 234.99  inc. vat

£ 195.82 ex. vat

More Info

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

£189.48save £11.01

£ 148.72 ex. vat

£157.90save £9.18
More Info

Corsair HX850i 850 Watt Power Supply

  • 80 PLUS Platinum efficiency, delivering 92% energy efficiency at real...
  • 140mm thermally controlled fluid dynamic bearing fan spins up as...

QuickFind: 659513

Mfr part code: CP-9020073-UK

£ 156.48  inc. vat

£166.24save £9.76

£ 130.40 ex. vat

£138.53save £8.13
More Info

Corsair HX850 - 850 Watt Fully Modular PSU

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

QuickFind: 788620

Mfr part code: CP-9020138-UK

£ 146.37  inc. vat

£160.11save £13.74

£ 121.97 ex. vat

£133.42save £11.45
More Info

Corsair HX1000i High Performance Series (1000 Watt) 80 Plus Platinum Atx Power Supply Unit

  • ZeroRPM mode for fanless operation at low loads
  • 140mm thermally controlled fluid dynamic bearing
  • 80 PLUS Platinum efficiency

QuickFind: 663410

Mfr part code: CP-9020074-UK

£ 197.99  inc. vat

£ 164.99 ex. vat

More Info

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

£ 217.98  inc. vat

£239.03save £21.05

£ 181.65 ex. vat

£199.19save £17.54
More Info

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

£ 157.12  inc. vat

£ 130.93 ex. vat

More Info

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

£ 200.99  inc. vat

£ 167.49 ex. vat

More Info

Be Quiet! 1200W 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: 728223

Mfr part code: BN255

£ 231.99  inc. vat

£ 193.32 ex. vat

More Info

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

£ 131.99  inc. vat

£ 109.99 ex. vat

More Info

Seasonic Focus PX-750 750W 80+ Platinum Modular Power Supply

  • 80 PLUS Platinum certification
  • Powerful 70A single rail Modular cable management with flat cables...
  • 10 Year manufacturer's guarantee
  • Four 6+2-pin PCIe connectors for graphics cards

QuickFind: 919250

Mfr part code: FOCUS-PX-750

£ 140.00  inc. vat

£ 116.66 ex. vat

More Info

Corsair HX750i 750 Watt Power Supply

  • 80 PLUS Platinum efficiency, delivering 92% energy efficiency at real...
  • ZeroRPM mode for fan-less operation at low loads and outstanding noise...

QuickFind: 659514

Mfr part code: CP-9020072-UK

£ 140.00  inc. vat

£154.28save £14.28

£ 116.66 ex. vat

£128.56save £11.90
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

£ 158.49  inc. vat

£ 132.07 ex. vat

More Info

EVGA Supernova 1200W Fully Modular 80+ Platinum Power Supply

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with 2 x 12v Rails Delivering upto 99.9 Amps per Rail...
  • Equipped with 6 x 8pin & 2 x 6pin PCI-E Connectors for Graphics Cards...

QuickFind: 655997

Mfr part code: 220-P2-1200-X3

£ 335.99  inc. vat

£ 279.99 ex. vat

Finance from per month.
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More Info

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

£ 203.37  inc. vat

£ 169.47 ex. vat

More Info

Thermaltake Toughpower 1200 Watt Full Modular 80+ Platinum ARGB PSU/Power Supply

  • 1200 W 80 PLUS Platinum
  • 1 x 140mm w/ Addressable RGB LEDs
  • 150 x 86 x 180 (WxHxD)

QuickFind: 914027

Mfr part code: PS-TPD-1200F3FAPE-1

£ 284.60  inc. vat

£ 237.16 ex. vat

Finance from per month.
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More Info

Seasonic Focus PX-650 650W 80+ Platinum Modular Power Supply

  • 80 PLUS Platinum certification
  • Powerful 70A single rail
  • Modular cable management with flat cables
  • 10 Year manufacturer's guarantee

QuickFind: 919251

Mfr part code: FOCUS-PX-650

£ 119.96  inc. vat

£ 99.96 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

£ 112.98  inc. vat

£ 94.15 ex. vat

More Info

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

£ 179.49  inc. vat

£ 149.57 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

£ 209.68  inc. vat

£ 174.73 ex. vat

More Info
Showing 1 - 24 of 27 results
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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.