PC Computer Power Supply Units (35 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 35 results
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CORSAIR CV Series CV650 - 650 Watt Power Supply

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

£ 51.99  inc. vat

£56.90save £4.91

£ 43.32 ex. vat

£47.41save £4.09
More Info

Aerocool Integrator 700W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable

  • 12cm Silent Fan
  • 700w 80+ Efficiency
  • Dimensions 150mm x 85mm x 140mm (W x H x D)

£ 41.85  inc. vat

£44.51save £2.66

£ 34.87 ex. vat

£37.09save £2.22
More Info

Thermaltake Litepower 650W PSU

  • 80 Plus Efficiency
  • Ultra-Quiet Fan
  • Cables with High Flexibility
  • High-Quality Components

£ 41.99  inc. vat

£ 34.99 ex. vat

More Info

Aerocool Integrator 600W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable

  • 12cm Silent Fan
  • 600w 80+ Efficiency
  • Dimensions 150mm x 85mm x 140mm (WxHxD)

£ 36.98  inc. vat

£38.99save £2.01

£ 30.81 ex. vat

£32.49save £1.68
More Info

CORSAIR CV Series CV550 - 550 Watt Power Supply

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

£ 44.99  inc. vat

£50.00save £5.01

£ 37.49 ex. vat

£41.66save £4.17
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

£ 39.95  inc. vat

£46.48save £6.53

£ 33.29 ex. vat

£38.73save £5.44
More Info

Cougar VTE 500W 80 Plus Bronze Fixed Cable ATX PSU Series

£ 34.43  inc. vat

£ 28.69 ex. vat

More Info

Thermaltake TR2 S Series 700W Power Supply 80 Plus

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

£ 64.98  inc. vat

£ 54.15 ex. vat

More Info

Xenta 600W 80+ Power Supply Unit 230V with 12cm Fan

  • 600w
  • 12cm Low Noise Fan
  • 80+ Efficiency
  • APFC
  • 3-Pin UK AC adaptor Included

£ 34.98  inc. vat

£35.98save £1.00

£ 29.15 ex. vat

£29.98save £0.83
More Info

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...

£ 29.98  inc. vat

£36.98save £7.00

£ 24.98 ex. vat

£30.81save £5.83
More Info

Be Quiet! Pure Power 11 400w Power Supply

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

£ 51.99  inc. vat

£ 43.32 ex. vat

More Info

FSP 250W FLEX Power Supply FSP250-50GUB (Bronze)

  • Max power: 250W Continous
  • 80plus Bronze Certified: 85% efficient at Typical loads
  • Japanese primary capacitor
  • Flexible 20 or 24pin ATX connector

£ 34.98  inc. vat

£ 29.15 ex. vat

More Info

Aerocool Aero Bronze 750W 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

£ 68.93  inc. vat

£ 57.44 ex. vat

More Info

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

  • 350W AC Config 1 power supply

£ 439.98  inc. vat

£ 366.65 ex. vat

Finance from per month.
( APR) representative

More Info

Thermaltake Litepower 550W PSU

  • 550W PSU
  • Ultra-Quiet Fan
  • Elongated Sleeved Cables
  • Utmost Reliability and Compatibility
  • Powerful Dedicated +12v Output

£ 37.98  inc. vat

£ 31.65 ex. vat

More Info

Aerocool Integrator 500W Power Supply, 80 Plus Bronze

  • Wattage: 500W
  • Non-Modular
  • 80 PLUS Bronze
  • 120mm
  • ECO friendly

£ 32.99  inc. vat

£37.72save £4.73

£ 27.49 ex. vat

£31.43save £3.94
More Info

Antec VP 400 PC EC

  • 400W Continuous Power
  • Up to 82% efficient
  • 120 mm Silence
  • Heavy-duty Caps

£ 34.26  inc. vat

£ 28.55 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

£ 44.49  inc. vat

£ 37.07 ex. vat

More Info

Thermaltake Hamburg Pro RGB 550W 80+ Bronze

  • 550W 80+ Bronze
  • High Quality Japanese capacitor
  • 10 LED Lights including 256 Colors RGB Cycle
  • 120mm Fan for exceptional cooling

£ 51.60  inc. vat

£63.99save £12.39

£ 43.00 ex. vat

£53.32save £10.32
More Info

Antec NE550C GB 80+Bronze Certified PSU

  • 550W Continuous Power
  • 80 PLUS BRONZE certified
  • 3 year warranty
  • Whisper-quiet high-quality double ball bearing fan

£ 48.99  inc. vat

£ 40.82 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...

£ 43.98  inc. vat

£46.24save £2.26

£ 36.65 ex. vat

£38.53save £1.88
More Info

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

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

£ 29.99  inc. vat

£34.32save £4.33

£ 24.99 ex. vat

£28.60save £3.61
More Info

Xenta 400W 80+ Power Supply Unit 230V with 12cm Fan

  • 400w
  • 12cm Low Noise Fan
  • 80+ Efficiency
  • APFC
  • 3-Pin UK AC adaptor Included

£ 28.98  inc. vat

£ 24.15 ex. vat

More Info

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

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

£ 37.00  inc. vat

£40.97save £3.97

£ 30.83 ex. vat

£34.14save £3.31
More Info

CORSAIR CV Series CV650 - 650 Watt Power Supply

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

QuickFind: 951103

Mfr part code: CP-9020211-UK

£ 51.99  inc. vat

£56.90save £4.91

£ 43.32 ex. vat

£47.41save £4.09
More Info

Aerocool Integrator 700W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable

  • 12cm Silent Fan
  • 700w 80+ Efficiency
  • Dimensions 150mm x 85mm x 140mm (W x H x D)

QuickFind: 713439

Mfr part code: ACPB-IT70AKC.12

£ 41.85  inc. vat

£44.51save £2.66

£ 34.87 ex. vat

£37.09save £2.22
More Info

Thermaltake Litepower 650W PSU

  • 80 Plus Efficiency
  • Ultra-Quiet Fan
  • Cables with High Flexibility
  • High-Quality Components

QuickFind: 856009

Mfr part code: PS-LTP-0650NPCN UK-2

£ 41.99  inc. vat

£ 34.99 ex. vat

More Info

Aerocool Integrator 600W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable

  • 12cm Silent Fan
  • 600w 80+ Efficiency
  • Dimensions 150mm x 85mm x 140mm (WxHxD)

QuickFind: 713436

Mfr part code: ACP-I600HG

£ 36.98  inc. vat

£38.99save £2.01

£ 30.81 ex. vat

£32.49save £1.68
More Info

CORSAIR CV Series CV550 - 550 Watt Power Supply

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

QuickFind: 951102

Mfr part code: CP-9020210-UK

£ 44.99  inc. vat

£50.00save £5.01

£ 37.49 ex. vat

£41.66save £4.17
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

£ 39.95  inc. vat

£46.48save £6.53

£ 33.29 ex. vat

£38.73save £5.44
More Info

Cougar VTE 500W 80 Plus Bronze Fixed Cable ATX PSU Series

QuickFind: 958340

Mfr part code: VTE500

£ 34.43  inc. vat

£ 28.69 ex. vat

More Info

Thermaltake TR2 S Series 700W Power Supply 80 Plus

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

QuickFind: 788083

Mfr part code: PS-TRS-0700NPCWUK-2

£ 64.98  inc. vat

£ 54.15 ex. vat

More Info

Xenta 600W 80+ Power Supply Unit 230V with 12cm Fan

  • 600w
  • 12cm Low Noise Fan
  • 80+ Efficiency
  • APFC
  • 3-Pin UK AC adaptor Included

QuickFind: 966446

Mfr part code: XEN - 600W

£ 34.98  inc. vat

£35.98save £1.00

£ 29.15 ex. vat

£29.98save £0.83
More Info

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

£ 29.98  inc. vat

£36.98save £7.00

£ 24.98 ex. vat

£30.81save £5.83
More Info

Be Quiet! Pure Power 11 400w Power Supply

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

QuickFind: 865166

Mfr part code: BN292

£ 51.99  inc. vat

£ 43.32 ex. vat

More Info

FSP 250W FLEX Power Supply FSP250-50GUB (Bronze)

  • Max power: 250W Continous
  • 80plus Bronze Certified: 85% efficient at Typical loads
  • Japanese primary capacitor
  • Flexible 20 or 24pin ATX connector

QuickFind: 973093

Mfr part code: FSP250-50GUB

£ 34.98  inc. vat

£ 29.15 ex. vat

More Info

Aerocool Aero Bronze 750W 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: 975186

Mfr part code: ACPB-AR75AKC.11

£ 68.93  inc. vat

£ 57.44 ex. vat

More Info

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

  • 350W AC Config 1 power supply

QuickFind: 483999

Mfr part code: PWR-C1-350WAC=

£ 439.98  inc. vat

£ 366.65 ex. vat

Finance from per month.
( APR) representative

More Info

Thermaltake Litepower 550W PSU

  • 550W PSU
  • Ultra-Quiet Fan
  • Elongated Sleeved Cables
  • Utmost Reliability and Compatibility
  • Powerful Dedicated +12v Output

QuickFind: 845737

Mfr part code: PS-LTP-0550NPCNUK-2

£ 37.98  inc. vat

£ 31.65 ex. vat

More Info

Aerocool Integrator 500W Power Supply, 80 Plus Bronze

  • Wattage: 500W
  • Non-Modular
  • 80 PLUS Bronze
  • 120mm
  • ECO friendly

QuickFind: 989985

Mfr part code: ACPB-IT50AKC.11

£ 32.99  inc. vat

£37.72save £4.73

£ 27.49 ex. vat

£31.43save £3.94
More Info

Antec VP 400 PC EC

  • 400W Continuous Power
  • Up to 82% efficient
  • 120 mm Silence
  • Heavy-duty Caps

QuickFind: 722891

Mfr part code: 0-761345-06487-3

£ 34.26  inc. vat

£ 28.55 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

£ 44.49  inc. vat

£ 37.07 ex. vat

More Info

Thermaltake Hamburg Pro RGB 550W 80+ Bronze

  • 550W 80+ Bronze
  • High Quality Japanese capacitor
  • 10 LED Lights including 256 Colors RGB Cycle
  • 120mm Fan for exceptional cooling

QuickFind: 982574

Mfr part code: W0592RE

£ 51.60  inc. vat

£63.99save £12.39

£ 43.00 ex. vat

£53.32save £10.32
More Info

Antec NE550C GB 80+Bronze Certified PSU

  • 550W Continuous Power
  • 80 PLUS BRONZE certified
  • 3 year warranty
  • Whisper-quiet high-quality double ball bearing fan

QuickFind: 789917

Mfr part code: 0-761345-05553-6

£ 48.99  inc. vat

£ 40.82 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

£ 43.98  inc. vat

£46.24save £2.26

£ 36.65 ex. vat

£38.53save £1.88
More Info

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

£ 29.99  inc. vat

£34.32save £4.33

£ 24.99 ex. vat

£28.60save £3.61
More Info

Xenta 400W 80+ Power Supply Unit 230V with 12cm Fan

  • 400w
  • 12cm Low Noise Fan
  • 80+ Efficiency
  • APFC
  • 3-Pin UK AC adaptor Included

QuickFind: 966444

Mfr part code: XEN-400W

£ 28.98  inc. vat

£ 24.15 ex. vat

More Info

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

£ 37.00  inc. vat

£40.97save £3.97

£ 30.83 ex. vat

£34.14save £3.31
More Info
Showing 1 - 24 of 35 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.