PC Computer Power Supply Units (11 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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EVGA 750w G3 80+ Modular Gold

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

£ 114.48  inc. vat

£ 95.40 ex. vat

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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

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EVGA SuperNOVA 650w PSU

  • 5 Year Warranty
  • 80PLUS Gold Certificate, with up to 90% efficiency
  • Highest quality Japanese Capacitors
  • Fully Modular to reduce clutter and improve airflow

£ 97.32  inc. vat

£ 81.10 ex. vat

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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

£ 106.98  inc. vat

£ 89.15 ex. vat

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EVGA SuperNOVA 1000 G2 Power Supply

  • 80 PLUS Gold certified
  • Fully Modular to reduce clutter and improve airflow
  • NVIDIA SLI & AMD Crossfire Ready
  • Unbeatable 10 Year Warranty

£ 151.65  inc. vat

£ 126.37 ex. vat

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EVGA 1000 GQ Modular Gold Rated 80+ Power Supply

  • 80 PLUS Gold certified
  • NVIDIA SLI & AMD Crossfire Ready
  • Modular Design to reduce clutter and improve airflow

£ 127.52  inc. vat

£ 106.26 ex. vat

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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

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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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EVGA SuperNOVA 1000 G1+ PSU

  • 80 Plus Gold Certified
  • Fully Modular to reduce clutter and improve airflow
  • NVIDIA SLI & AMD Crossfire Ready
  • 100% Japanese Capacitors

£ 146.99  inc. vat

£ 122.49 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

£ 253.98  inc. vat

£ 211.65 ex. vat

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EVGA BR 450W 80+ Bronze Power Supply

  • Quiet and Intelligent Auto Fan
  • 80 PLUS Bronze certified
  • 3 Year Warranty
  • Hard Lined Design
  • Long Sleeve Bearing Fan

£ 42.28  inc. vat

£ 35.23 ex. vat

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EVGA 750w G3 80+ Modular Gold

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

QuickFind: 767601

Mfr part code: 220-G3-0750-X3

£ 114.48  inc. vat

£ 95.40 ex. vat

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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

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EVGA SuperNOVA 650w PSU

  • 5 Year Warranty
  • 80PLUS Gold Certificate, with up to 90% efficiency
  • Highest quality Japanese Capacitors
  • Fully Modular to reduce clutter and improve airflow

QuickFind: 830658

Mfr part code: 120-GP-0650-X3

£ 97.32  inc. vat

£ 81.10 ex. vat

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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

£ 106.98  inc. vat

£ 89.15 ex. vat

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EVGA SuperNOVA 1000 G2 Power Supply

  • 80 PLUS Gold certified
  • Fully Modular to reduce clutter and improve airflow
  • NVIDIA SLI & AMD Crossfire Ready
  • Unbeatable 10 Year Warranty

QuickFind: 759092

Mfr part code: 120-G2-1000-X3

£ 151.65  inc. vat

£ 126.37 ex. vat

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EVGA 1000 GQ Modular Gold Rated 80+ Power Supply

  • 80 PLUS Gold certified
  • NVIDIA SLI & AMD Crossfire Ready
  • Modular Design to reduce clutter and improve airflow

QuickFind: 730233

Mfr part code: 210-GQ-1000-V3

£ 127.52  inc. vat

£ 106.26 ex. vat

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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

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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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EVGA SuperNOVA 1000 G1+ PSU

  • 80 Plus Gold Certified
  • Fully Modular to reduce clutter and improve airflow
  • NVIDIA SLI & AMD Crossfire Ready
  • 100% Japanese Capacitors

QuickFind: 828430

Mfr part code: 120-GP-1000-X3

£ 146.99  inc. vat

£ 122.49 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

£ 253.98  inc. vat

£ 211.65 ex. vat

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EVGA BR 450W 80+ Bronze Power Supply

  • Quiet and Intelligent Auto Fan
  • 80 PLUS Bronze certified
  • 3 Year Warranty
  • Hard Lined Design
  • Long Sleeve Bearing Fan

QuickFind: 869760

Mfr part code: 100-BR-0450-K3

£ 42.28  inc. vat

£ 35.23 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.