PC Computer Power Supply Units (9 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.

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

  • 350W AC Config 1 power supply

£ 444.99  inc. vat

£ 370.82 ex. vat

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Aerocool Integrator 400W PSU 80 Plus 12cm Black Fan Active PFC TW Caps UK Lead

  • 80 Plus 230V EU Certified
  • Elegant Black PSU Casing & Black Mesh Cables
  • 12cm Silent Fan
  • Up to 4 Sata Connectors
  • 2 Year Warranty

£ 26.02  inc. vat

£ 21.68 ex. vat

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Aerocool Cylon 500W Power Supply 80 Plus

  • 80Plus 230V EU Standard Certified for up to 85%+ efficiency
  • Silent 12cm black fan with optimized thermal fan speed control...

£ 36.96  inc. vat

£ 30.80 ex. vat

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Aerocool Cylon 700w 80+ Psu

  • Wattage: 700W
  • Non-Modular
  • 80 PLUS White
  • 120mm Fan
  • 2 Year Warranty

£ 40.98  inc. vat

£ 34.15 ex. vat

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Thermaltake TR2 S 600W PSU

  • Ultra-Quiet 120mm Fan
  • Multiple Connectors
  • 80 Plus 230V Standard Certified and Kaby Lake-Ready
  • High Quality Components

£ 54.94  inc. vat

£ 45.78 ex. vat

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Aerocool Cylon 600W Fully Wired 80+ PSU/Power Supply

  • Fully Wired 80 PLUS White
  • Single Rail, 45A
  • 120mm Fan
  • ATX PSU

£ 40.96  inc. vat

£ 34.13 ex. vat

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Aerocool Aero Bronze 650W PSU

  • Up to 90%+ efficiency with 80Plus Bronze 230V EU certified
  • Built-in premium 105°C Japanese main capacitors
  • 12cm high-pressure fan with optimized fan speed
  • DC-to-DC conversion circuit for higher efficiency

£ 54.98  inc. vat

£ 45.81 ex. vat

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Aerocool Aero Bronze 550W PSU

  • Up to 90%+ efficiency with 80Plus Bronze 230V EU certified
  • Built-in premium 105°C Japanese main capacitors
  • 12cm high-pressure fan with optimized fan speed
  • DC-to-DC conversion circuit for higher efficiency

£ 56.46  inc. vat

£ 47.05 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

£ 33.99  inc. vat

£ 28.32 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=

£ 444.99  inc. vat

£ 370.82 ex. vat

Finance from per month.
( APR) representative

More Info

Aerocool Integrator 400W PSU 80 Plus 12cm Black Fan Active PFC TW Caps UK Lead

  • 80 Plus 230V EU Certified
  • Elegant Black PSU Casing & Black Mesh Cables
  • 12cm Silent Fan
  • Up to 4 Sata Connectors
  • 2 Year Warranty

QuickFind: 809285

Mfr part code: ACOOLPSUINTEGRATOR400W

£ 26.02  inc. vat

£ 21.68 ex. vat

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Aerocool Cylon 500W Power Supply 80 Plus

  • 80Plus 230V EU Standard Certified for up to 85%+ efficiency
  • Silent 12cm black fan with optimized thermal fan speed control...

QuickFind: 964797

Mfr part code: ACPW-CN50AKC.11

£ 36.96  inc. vat

£ 30.80 ex. vat

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Aerocool Cylon 700w 80+ Psu

  • Wattage: 700W
  • Non-Modular
  • 80 PLUS White
  • 120mm Fan
  • 2 Year Warranty

QuickFind: 958728

Mfr part code: ACPW-CN70AKC.11

£ 40.98  inc. vat

£ 34.15 ex. vat

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Thermaltake TR2 S 600W PSU

  • Ultra-Quiet 120mm Fan
  • Multiple Connectors
  • 80 Plus 230V Standard Certified and Kaby Lake-Ready
  • High Quality Components

QuickFind: 788082

Mfr part code: PS-TRS-0600NPCWUK-2

£ 54.94  inc. vat

£ 45.78 ex. vat

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Aerocool Cylon 600W Fully Wired 80+ PSU/Power Supply

  • Fully Wired 80 PLUS White
  • Single Rail, 45A
  • 120mm Fan
  • ATX PSU

QuickFind: 975187

Mfr part code: ACPW-CN60AKC.11

£ 40.96  inc. vat

£ 34.13 ex. vat

More Info

Aerocool Aero Bronze 650W PSU

  • Up to 90%+ efficiency with 80Plus Bronze 230V EU certified
  • Built-in premium 105°C Japanese main capacitors
  • 12cm high-pressure fan with optimized fan speed
  • DC-to-DC conversion circuit for higher efficiency

QuickFind: 975185

Mfr part code: ACPB-AR65AKC.11

£ 54.98  inc. vat

£ 45.81 ex. vat

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Aerocool Aero Bronze 550W PSU

  • Up to 90%+ efficiency with 80Plus Bronze 230V EU certified
  • Built-in premium 105°C Japanese main capacitors
  • 12cm high-pressure fan with optimized fan speed
  • DC-to-DC conversion circuit for higher efficiency

QuickFind: 975184

Mfr part code: ACPB-AR55AKC.11

£ 56.46  inc. vat

£ 47.05 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

£ 33.99  inc. vat

£ 28.32 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.