PC Computer Power Supply Units (61 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 25 - 48 of 61 results
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Aerocool Cylon 400W Fully Wired 80+ PSU/Power Supply

  • Fully Wired ATX PSU
  • 80PLUS White
  • Single Rail
  • 30A
  • 120mm Fan

£ 30.99  inc. vat

£ 25.82 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

£ 176.51  inc. vat

£ 147.09 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

£ 156.84  inc. vat

£ 130.70 ex. vat

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Antec 750W EA750G PRO EarthWatts Gold Pro PSU

  • 80 Plus Gold Certified
  • Semi Modular
  • Japanese Capacitors
  • Whisper-quiet high-quality Fan
  • 7 Year Warranty

£ 98.18  inc. vat

£103.11save £4.93

£ 81.81 ex. vat

£85.92save £4.11
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Straight Power 11 650w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency (up to 93%)
  • Powerful multi-GPU support
  • Japanese 105°C-rated capacitors ensure stability and reliability...

£ 126.69  inc. vat

£ 105.57 ex. vat

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Straight Power 11 850w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency
  • Powerful multi-GPU support
  • Japanese capacitors ensure reliability
  • 5-year manufacturer’s warranty

£ 151.47  inc. vat

£ 126.22 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

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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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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! Pure Power 11 350w Power Supply

  • 80 Plus Bronze
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Attractively Sleeved Cables
  • 5 Year Warranty

£ 55.67  inc. vat

£ 46.39 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

£ 97.14  inc. vat

£ 80.95 ex. vat

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Premium Braided 30cm PSU Extension Cable Kit - Blue

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

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

Premium Braided PSU Extension Cable Kit - White & Black

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

£ 14.98  inc. vat

£ 12.48 ex. vat

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EXDISPLAY CIT 400W Dual 12V Rail PSU V2.2- 12cm Fan - 20+4pin 3x SATA 1x PCI-E

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto 21 Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

Sorry, this product is temporarily out of stock.

Be Quiet TFX Power 2 300W Fully Wired 80+ Gold Power Supply

  • Black Coloured PSU with a 80mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto Amps
  • Equipped with 8 PCI-E Connectors for Graphics Cards

£ 62.75  inc. vat

£ 52.29 ex. vat

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EXDISPLAY Extra Value Builder 500W Fully Wired Efficient Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 20 Amps
  • 1 Year Warranty for Peace of Mind

£ 12.11  inc. vat

£ 10.09 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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Straight Power 11 450w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency
  • Powerful multi-GPU support
  • Japanese capacitors ensure reliability
  • 5-year manufacturer’s warranty

£ 97.42  inc. vat

£ 81.18 ex. vat

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Be Quiet! Pure Power 11 300w Power Supply

  • 80 Plus Bronze
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Attractively Sleeved Cables
  • 5 Year Warranty

£ 50.50  inc. vat

£ 42.08 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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EXDISPLAY Powercool 750W Modular PSU 80+ Dual 12V V2.2 High Efficiency

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 54 Amps
  • Equipped with 2 PCI-E Connectors for Graphics Cards

£ 44.25  inc. vat

£ 36.87 ex. vat

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CISCO SYSTEMS PWR-C1-350WAC= Cisco - Power supply

  • 350W AC Config 1 power supply

£ 455.99  inc. vat

£ 379.99 ex. vat

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Aerocool Cylon 400W Fully Wired 80+ PSU/Power Supply

  • Fully Wired ATX PSU
  • 80PLUS White
  • Single Rail
  • 30A
  • 120mm Fan

QuickFind: 958727

Mfr part code: ACPW-CN40AKC.11

£ 30.99  inc. vat

£ 25.82 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

£ 176.51  inc. vat

£ 147.09 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

£ 156.84  inc. vat

£ 130.70 ex. vat

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Antec 750W EA750G PRO EarthWatts Gold Pro PSU

  • 80 Plus Gold Certified
  • Semi Modular
  • Japanese Capacitors
  • Whisper-quiet high-quality Fan
  • 7 Year Warranty

QuickFind: 810566

Mfr part code: 0-761345-11623-7

£ 98.18  inc. vat

£103.11save £4.93

£ 81.81 ex. vat

£85.92save £4.11
More Info

Straight Power 11 650w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency (up to 93%)
  • Powerful multi-GPU support
  • Japanese 105°C-rated capacitors ensure stability and reliability...

QuickFind: 826246

Mfr part code: BN282

£ 126.69  inc. vat

£ 105.57 ex. vat

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Straight Power 11 850w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency
  • Powerful multi-GPU support
  • Japanese capacitors ensure reliability
  • 5-year manufacturer’s warranty

QuickFind: 826249

Mfr part code: BN284

£ 151.47  inc. vat

£ 126.22 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

QuickFind: 843896

Mfr part code: CP-9020087-UK

£ 413.31  inc. vat

£ 344.42 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

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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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

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Be Quiet! Pure Power 11 350w Power Supply

  • 80 Plus Bronze
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Attractively Sleeved Cables
  • 5 Year Warranty

QuickFind: 865165

Mfr part code: BN291

£ 55.67  inc. vat

£ 46.39 ex. vat

More Info

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

More Info

Premium Braided 30cm PSU Extension Cable Kit - Blue

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

QuickFind: 912962

Mfr part code: PSUBLUE

£ 14.98  inc. vat

£ 12.48 ex. vat

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Premium Braided PSU Extension Cable Kit - White & Black

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

QuickFind: 912965

Mfr part code: PSUWHITEBLK

£ 14.98  inc. vat

£ 12.48 ex. vat

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EXDISPLAY CIT 400W Dual 12V Rail PSU V2.2- 12cm Fan - 20+4pin 3x SATA 1x PCI-E

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto 21 Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

QuickFind: 395077

Mfr part code: EBR3-PSUCIT400UB

Sorry, this product is temporarily out of stock.

Be Quiet TFX Power 2 300W Fully Wired 80+ Gold Power Supply

  • Black Coloured PSU with a 80mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto Amps
  • Equipped with 8 PCI-E Connectors for Graphics Cards

QuickFind: 620504

Mfr part code: BN229

£ 62.75  inc. vat

£ 52.29 ex. vat

More Info

EXDISPLAY Extra Value Builder 500W Fully Wired Efficient Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 20 Amps
  • 1 Year Warranty for Peace of Mind

QuickFind: 649831

Mfr part code: EBR1-PSU500BUILDERBLACK

£ 12.11  inc. vat

£ 10.09 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

More Info

Straight Power 11 450w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency
  • Powerful multi-GPU support
  • Japanese capacitors ensure reliability
  • 5-year manufacturer’s warranty

QuickFind: 826244

Mfr part code: BN280

£ 97.42  inc. vat

£ 81.18 ex. vat

More Info

Be Quiet! Pure Power 11 300w Power Supply

  • 80 Plus Bronze
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Attractively Sleeved Cables
  • 5 Year Warranty

QuickFind: 865164

Mfr part code: BN290

£ 50.50  inc. vat

£ 42.08 ex. vat

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

£ 233.99  inc. vat

£ 194.99 ex. vat

More Info

EXDISPLAY Powercool 750W Modular PSU 80+ Dual 12V V2.2 High Efficiency

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 54 Amps
  • Equipped with 2 PCI-E Connectors for Graphics Cards

QuickFind: 281329

Mfr part code: EBR1-PSUPC750AUBAM

£ 44.25  inc. vat

£ 36.87 ex. vat

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CISCO SYSTEMS PWR-C1-350WAC= Cisco - Power supply

  • 350W AC Config 1 power supply

QuickFind: 483999

Mfr part code: PWR-C1-350WAC=

£ 455.99  inc. vat

£ 379.99 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.