PC Computer Power Supply Units (28 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 28 results
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Cougar GX-S 650W 80 Plus Gold Fixed Cable ATX PSU Series

  • Efficiency: at least 90/87/87% at 50/20/100% load (115 volt input...
  • Form Factor: ATX12 V 2.3
  • Manufacturer Warranty: 5 Years

£ 71.97  inc. vat

£ 59.97 ex. vat

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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

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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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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 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

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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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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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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

£ 76.34  inc. vat

£ 63.61 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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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

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

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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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Be Quiet! Pure Power 11 700w Power Supply

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

£ 99.63  inc. vat

£ 83.02 ex. vat

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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

£ 121.49  inc. vat

£ 101.24 ex. vat

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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...

£ 54.48  inc. vat

£ 45.40 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

£ 250.98  inc. vat

£ 209.15 ex. vat

More Info

Be Quiet SFX Power 2 300W Fully Wired 80+ Bronze Power Supply

  • Black Coloured PSU with a 80mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

£ 58.07  inc. vat

£ 48.39 ex. vat

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Be Quiet! SFX L Power 500W Fully Modular Power Supply

  • 80 PLUS Gold certification (up to 92% efficiency)
  • Multi-GPU support with four PCIe connectors
  • Full cable management for maximum build flexibility
  • Temperature-controlled 120mm high-quality fan

£ 100.79  inc. vat

£ 83.99 ex. vat

More Info

Be Quiet! Pure Power 11 CM 700w Power Supply

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

£ 115.55  inc. vat

£ 96.29 ex. vat

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Straight Power 11 750w - 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

£ 134.37  inc. vat

£ 111.97 ex. vat

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Be Quiet Power Zone 750W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 62 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£ 111.23  inc. vat

£ 92.69 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

£ 270.00  inc. vat

£ 225.00 ex. vat

More Info

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

More Info

Be Quiet! Pure Power 11 600w Power Supply

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

£ 91.29  inc. vat

£ 76.07 ex. vat

More Info

Cougar GX-S 650W 80 Plus Gold Fixed Cable ATX PSU Series

  • Efficiency: at least 90/87/87% at 50/20/100% load (115 volt input...
  • Form Factor: ATX12 V 2.3
  • Manufacturer Warranty: 5 Years

QuickFind: 958334

Mfr part code: GX-S650

£ 71.97  inc. vat

£ 59.97 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

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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

QuickFind: 865164

Mfr part code: BN290

£ 50.50  inc. vat

£ 42.08 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

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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

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

More Info

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

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

£ 76.34  inc. vat

£ 63.61 ex. vat

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

£ 176.51  inc. vat

£ 147.09 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

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

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

More Info

Be Quiet! Pure Power 11 700w Power Supply

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

QuickFind: 865169

Mfr part code: BN295

£ 99.63  inc. vat

£ 83.02 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

£ 121.49  inc. vat

£ 101.24 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

£ 54.48  inc. vat

£ 45.40 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

£ 250.98  inc. vat

£ 209.15 ex. vat

More Info

Be Quiet SFX Power 2 300W Fully Wired 80+ Bronze Power Supply

  • Black Coloured PSU with a 80mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

QuickFind: 620499

Mfr part code: BN226

£ 58.07  inc. vat

£ 48.39 ex. vat

More Info

Be Quiet! SFX L Power 500W Fully Modular Power Supply

  • 80 PLUS Gold certification (up to 92% efficiency)
  • Multi-GPU support with four PCIe connectors
  • Full cable management for maximum build flexibility
  • Temperature-controlled 120mm high-quality fan

QuickFind: 879263

Mfr part code: BN238

£ 100.79  inc. vat

£ 83.99 ex. vat

More Info

Be Quiet! Pure Power 11 CM 700w Power Supply

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

QuickFind: 865173

Mfr part code: BN299

£ 115.55  inc. vat

£ 96.29 ex. vat

More Info

Straight Power 11 750w - 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: 826248

Mfr part code: BN283

£ 134.37  inc. vat

£ 111.97 ex. vat

More Info

Be Quiet Power Zone 750W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 62 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

QuickFind: 546365

Mfr part code: BN211

£ 111.23  inc. vat

£ 92.69 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

£ 270.00  inc. vat

£ 225.00 ex. vat

More Info

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

Be Quiet! Pure Power 11 600w Power Supply

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

QuickFind: 865168

Mfr part code: BN294

£ 91.29  inc. vat

£ 76.07 ex. vat

More Info
Showing 1 - 24 of 28 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.