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 1 - 24 of 61 results
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Corsair 650W TX650M Gold Hybid Modular Power Supply/PSU

  • 650W Corsair TX-M Series TX650M PSU
  • 80PLUS Gold
  • Hybrid Modular
  • Single Rail
  • 51A + 12V, 120mm Fan

£ 86.25  inc. vat

£ 71.87 ex. vat

More Info

ThermalTake Litepower RGB 450W PSU/Power Supply

  • 450W
  • Single Rail 33A
  • 1 x 120m RGB Fan
  • EPS/ATX PSU

£ 35.78  inc. vat

£ 29.81 ex. vat

More Info

EVGA SuperNOVA 850 G3 Power Supply

  • 80 Plus Gold
  • Fully Modular
  • SLI / Crossfire Ready
  • Highest quality Japanese capacitors
  • 10 Year Warranty

£ 135.52  inc. vat

£ 112.93 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%

£ 79.92  inc. vat

£ 66.60 ex. vat

More Info

Corsair VS Series 350 Watt Power Supply

  • A dedicated single +12V rail offers maximum
  • Conforms to ATX12V v2.31 standard,
  • AC input from 200~240VAV

£ 34.49  inc. vat

£ 28.74 ex. vat

More Info

Corsair RM650 650 Watt 80+ Gold Fully Modular PSU

  • 80+ Gold Certified
  • Fully Modular
  • 140mm Fan Size
  • Multiple GPU Ready
  • Zero RPM Fan Mode

£ 89.49  inc. vat

£ 74.57 ex. vat

More Info

Premium Braided 30cm PSU Extension Cable Kit - White

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

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

EVGA 850 B3 850W Modular 80+ Bronze PSU

  • 3x Molex Connectors
  • 9x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

£ 106.65  inc. vat

£ 88.87 ex. vat

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

£ 82.95  inc. vat

£ 69.12 ex. vat

More Info

Corsair 750W CX750 Bronze ATX Power Supply/PSU

  • 750W Corsair CX Series CX750
  • 80PLUS Bronze
  • Fully Wired
  • Single Rail
  • 62.5A +12V, 140mm Fan

£ 91.98  inc. vat

£ 76.65 ex. vat

More Info

Thermaltake Smart DPS G Digital 450w Power Supply 80+ G

  • Smart Power Management
  • Ultra Quiet 120mm Fan
  • 80 Plus 230V Standard Certified
  • Multiple Connectors

£ 42.99  inc. vat

£ 35.82 ex. vat

More Info

Be Quiet! 400W System Power 9 PSU

  • Attained by using a high-quality fan
  • Advanced reliability for CPU and GPU
  • Equipped with a wealth of advanced technology
  • Attractive design for high performance, cost-effective systems...

£ 54.15  inc. vat

£ 45.12 ex. vat

More Info

Be Quiet! Pure Power 11 CM 500w Power Supply

  • 80 Plus Gold
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Modular cable management
  • 5 Year Warranty

£ 90.84  inc. vat

£ 75.70 ex. vat

More Info

Premium Braided 30cm PSU Extension Cable Kit - Black

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

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

Premium Braided 30cm PSU Exention Cable Kit - Red

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

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

Cougar VTE 400W 80 Plus Bronze Fixed Cable ATX PSU Series

  • 400W Bronze Rated PSU
  • High Power Conversion Efficiency
  • Single +12V DC Source
  • Integrated Air Inlet Design

£ 31.47  inc. vat

£ 26.22 ex. vat

More Info

Evga 1000w G3 80+ Modular Gold

  • Unbeatable 10 Year Warranty
  • 80 PLUS Gold certified
  • Hydraulic Dynamic Bearing Fan
  • Fully Modular

£ 169.98  inc. vat

£ 141.65 ex. vat

More Info

Antec NE650M GB Semi Modular 80BRONZE PSU

  • 650W Continuous Power
  • 80 PLUS BRONZE certified
  • Advanced hybrid cable management
  • 3 year warranty
  • Whisper-quiet high-quality fan

£ 65.99  inc. vat

£ 54.99 ex. vat

More Info

Straight Power 11 550w - 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

£ 113.49  inc. vat

£ 94.57 ex. vat

More Info

Be Quiet Power Zone 650W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 54 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£ 121.26  inc. vat

£ 101.05 ex. vat

More Info

Be Quiet Power Zone 850W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 70 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£ 141.72  inc. vat

£ 118.10 ex. vat

More Info

Be Quiet! Pure Power 11 500w Power Supply

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

£ 74.99  inc. vat

£ 62.49 ex. vat

More Info

Premium Braided PSU Extension Cable Kit - Red & Black

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

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

CORSAIR CV Series CV450 - 450 Watt Power Supply

  • 80 PLUS Bronze Certified
  • Full Continuous Power
  • Low-Noise Cooling
  • Black Sleeving and Casing
  • Three-Year Warranty

£ 42.77  inc. vat

£ 35.64 ex. vat

More Info

Corsair 650W TX650M Gold Hybid Modular Power Supply/PSU

  • 650W Corsair TX-M Series TX650M PSU
  • 80PLUS Gold
  • Hybrid Modular
  • Single Rail
  • 51A + 12V, 120mm Fan

QuickFind: 782057

Mfr part code: CP-9020132-UK

£ 86.25  inc. vat

£ 71.87 ex. vat

More Info

ThermalTake Litepower RGB 450W PSU/Power Supply

  • 450W
  • Single Rail 33A
  • 1 x 120m RGB Fan
  • EPS/ATX PSU

QuickFind: 937192

Mfr part code: PS-LTP-0450NHSANE-1

£ 35.78  inc. vat

£ 29.81 ex. vat

More Info

EVGA SuperNOVA 850 G3 Power Supply

  • 80 Plus Gold
  • Fully Modular
  • SLI / Crossfire Ready
  • Highest quality Japanese capacitors
  • 10 Year Warranty

QuickFind: 769000

Mfr part code: 220-G3-0850-X3

£ 135.52  inc. vat

£ 112.93 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

£ 79.92  inc. vat

£ 66.60 ex. vat

More Info

Corsair VS Series 350 Watt Power Supply

  • A dedicated single +12V rail offers maximum
  • Conforms to ATX12V v2.31 standard,
  • AC input from 200~240VAV

QuickFind: 726364

Mfr part code: CP-9020095-UK

£ 34.49  inc. vat

£ 28.74 ex. vat

More Info

Corsair RM650 650 Watt 80+ Gold Fully Modular PSU

  • 80+ Gold Certified
  • Fully Modular
  • 140mm Fan Size
  • Multiple GPU Ready
  • Zero RPM Fan Mode

QuickFind: 908646

Mfr part code: CP-9020194-UK

£ 89.49  inc. vat

£ 74.57 ex. vat

More Info

Premium Braided 30cm PSU Extension Cable Kit - White

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

QuickFind: 912963

Mfr part code: PSUWHITE

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

EVGA 850 B3 850W Modular 80+ Bronze PSU

  • 3x Molex Connectors
  • 9x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 791244

Mfr part code: 220-B3-0850-V3

£ 106.65  inc. vat

£ 88.87 ex. vat

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

£ 82.95  inc. vat

£ 69.12 ex. vat

More Info

Corsair 750W CX750 Bronze ATX Power Supply/PSU

  • 750W Corsair CX Series CX750
  • 80PLUS Bronze
  • Fully Wired
  • Single Rail
  • 62.5A +12V, 140mm Fan

QuickFind: 782055

Mfr part code: CP-9020123-UK

£ 91.98  inc. vat

£ 76.65 ex. vat

More Info

Thermaltake Smart DPS G Digital 450w Power Supply 80+ G

  • Smart Power Management
  • Ultra Quiet 120mm Fan
  • 80 Plus 230V Standard Certified
  • Multiple Connectors

QuickFind: 766407

Mfr part code: PS-SPG-0450DPCWEU-2

£ 42.99  inc. vat

£ 35.82 ex. vat

More Info

Be Quiet! 400W System Power 9 PSU

  • Attained by using a high-quality fan
  • Advanced reliability for CPU and GPU
  • Equipped with a wealth of advanced technology
  • Attractive design for high performance, cost-effective systems...

QuickFind: 859737

Mfr part code: BN245

£ 54.15  inc. vat

£ 45.12 ex. vat

More Info

Be Quiet! Pure Power 11 CM 500w Power Supply

  • 80 Plus Gold
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Modular cable management
  • 5 Year Warranty

QuickFind: 865171

Mfr part code: BN297

£ 90.84  inc. vat

£ 75.70 ex. vat

More Info

Premium Braided 30cm PSU Extension Cable Kit - Black

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

QuickFind: 912961

Mfr part code: PSUBLACK

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

Premium Braided 30cm PSU Exention Cable Kit - Red

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

QuickFind: 912960

Mfr part code: PSURED

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

Cougar VTE 400W 80 Plus Bronze Fixed Cable ATX PSU Series

  • 400W Bronze Rated PSU
  • High Power Conversion Efficiency
  • Single +12V DC Source
  • Integrated Air Inlet Design

QuickFind: 958339

Mfr part code: VTE400

£ 31.47  inc. vat

£ 26.22 ex. vat

More Info

Evga 1000w G3 80+ Modular Gold

  • Unbeatable 10 Year Warranty
  • 80 PLUS Gold certified
  • Hydraulic Dynamic Bearing Fan
  • Fully Modular

QuickFind: 767602

Mfr part code: 220-G3-1000-X3

£ 169.98  inc. vat

£ 141.65 ex. vat

More Info

Antec NE650M GB Semi Modular 80BRONZE PSU

  • 650W Continuous Power
  • 80 PLUS BRONZE certified
  • Advanced hybrid cable management
  • 3 year warranty
  • Whisper-quiet high-quality fan

QuickFind: 789918

Mfr part code: 0-761345-10574-3

£ 65.99  inc. vat

£ 54.99 ex. vat

More Info

Straight Power 11 550w - 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: 826245

Mfr part code: BN281

£ 113.49  inc. vat

£ 94.57 ex. vat

More Info

Be Quiet Power Zone 650W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 54 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

QuickFind: 546364

Mfr part code: BN210

£ 121.26  inc. vat

£ 101.05 ex. vat

More Info

Be Quiet Power Zone 850W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 70 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

QuickFind: 546367

Mfr part code: BN212

£ 141.72  inc. vat

£ 118.10 ex. vat

More Info

Be Quiet! Pure Power 11 500w Power Supply

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

QuickFind: 865167

Mfr part code: BN293

£ 74.99  inc. vat

£ 62.49 ex. vat

More Info

Premium Braided PSU Extension Cable Kit - Red & Black

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

QuickFind: 912964

Mfr part code: PSUREDBLACK

£ 14.98  inc. vat

£ 12.48 ex. vat

More Info

CORSAIR CV Series CV450 - 450 Watt Power Supply

  • 80 PLUS Bronze Certified
  • Full Continuous Power
  • Low-Noise Cooling
  • Black Sleeving and Casing
  • Three-Year Warranty

QuickFind: 951101

Mfr part code: CP-9020209-UK

£ 42.77  inc. vat

£ 35.64 ex. vat

More Info
Showing 1 - 24 of 61 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.