PC Power Supply Units (108 products)

It is essential you use the correct power supply for your computer. Whether you are 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 Power Supply Units

Showing 1 - 24 of 108 results
Grid List
Sponsored

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

£ 44.98  inc. vat

£64.98save £20.00

£ 37.48 ex. vat

£54.15save £16.67
More Info
Sponsored

Thermaltake TR2 S 600W PSU

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

£ 37.98  inc. vat

£54.95save £16.97

£ 31.65 ex. vat

£45.79save £14.14
More Info
Sponsored

Thermaltake TR2 S Series 500W Power Supply 80 Plus

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

£ 32.98  inc. vat

£48.93save £15.95

£ 27.48 ex. vat

£40.77save £13.29
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

£ 76.98  inc. vat

£84.06save £7.08

£ 64.15 ex. vat

£70.05save £5.90
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

£ 82.98  inc. vat

£100.36save £17.38

£ 69.15 ex. vat

£83.63save £14.48
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

£ 25.98  inc. vat

£35.98save £10.00

£ 21.65 ex. vat

£29.98save £8.33
More Info

Corsair HX850 - 850 Watt Fully Modular PSU

  • 80 PLUS® Platinum efficiency
  • Zero RPM Fan Mode
  • Quiet, efficient operation
  • Easy Installation

£ 183.99  inc. vat

£ 153.32 ex. vat

0% Interest offers available

More Info

Thermaltake Litepower 550W PSU

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

£ 34.98  inc. vat

£37.98save £3.00

£ 29.15 ex. vat

£31.65save £2.50
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

£ 37.98  inc. vat

£44.99save £7.01

£ 31.65 ex. vat

£37.49save £5.84
More Info

Xenta 500W 80+ Power Supply Unit 230V with 12cm Fan

  • 500w
  • 12cm Low Noise Fan
  • 80+ Efficiency
  • APFC
  • 3-Pin UK AC adaptor Included

£ 22.98  inc. vat

£31.98save £9.00

£ 19.15 ex. vat

£26.65save £7.50
More Info

Corsair TX550M 550W 80 Plus Gold Power Supply

  • 550W Corsair TX-M Series TX550M PSU
  • 80PLUS Gold
  • Hybrid Modular, Single Rail
  • 43A + 12V, 120mm Fan
  • ATX PSU

£ 69.95  inc. vat

£73.56save £3.61

£ 58.29 ex. vat

£61.30save £3.01
More Info

Corsair RM750x 80+ Gold Fully Modular Power Supply

  • 80 Plus Gold Certified
  • Low Noise Operation
  • Zero RPM Fan Mode
  • 100% Japanese 105'c Capacitors
  • Fully Modular Cables

£ 115.00  inc. vat

£124.98save £9.98

£ 95.83 ex. vat

£104.15save £8.32

0% Interest offers available

More Info

Thermaltake Litepower 450W PSU

  • Ultra-Quiet Fan
  • Cables with High Flexibility
  • High-Quality Components

£ 29.99  inc. vat

£34.98save £4.99

£ 24.99 ex. vat

£29.15save £4.16
More Info

Corsair 850 Watt RM850x Fully Modular ATX Power Supply

  • 80 Plus Gold Certified
  • Tuned For Low Noise Operation
  • Zero RPM Fan Mode
  • 100% All Japanese 105'c Capacitors
  • Fully Modular Cables

£ 139.98  inc. vat

£ 116.65 ex. vat

0% Interest offers available

More Info

Seasonic Focus GX-750 750W 80+ Gold Modular Power Supply

  • High-efficiency thanks to 80 PLUS Gold certification
  • Powerful 70A single rail
  • Modular cable management with flat cables
  • 10 Year manufacturer's guarantee

£ 99.99  inc. vat

£ 83.32 ex. vat

0% Interest offers available

More Info

Corsair RMx Series RM550x 80 PLUS Gold Fully Modular ATX PSU

  • 80 Plus Gold
  • Low Noise Operation
  • Fully Modular
  • 100% All Japanese 105c Capacitors
  • 10 Year Warranty

£ 80.99  inc. vat

£110.00save £29.01

£ 67.49 ex. vat

£91.66save £24.17
More Info

EVGA 500 BQ Power Supply

  • 80 PLUS Bronze
  • Hybrid Modular
  • SLI/CrossFire Ready
  • Single Rail
  • 3 Year Warranty

£ 53.26  inc. vat

£ 44.38 ex. vat

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...

£ 26.49  inc. vat

£34.98save £8.49

£ 22.07 ex. vat

£29.15save £7.08
More Info

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

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

£ 33.40  inc. vat

£40.97save £7.57

£ 27.83 ex. vat

£34.14save £6.31
More Info

EVGA 750 BQ Power Supply

  • Quiet and Intelligent Auto Fan for near-silent operation
  • Fan Size / Bearing 140mm Teflon Nano-Steel Bearing
  • 5 Year Warranty

£ 74.66  inc. vat

£ 62.21 ex. vat

More Info

Corsair CX-F RGB Series 750W 80 Plus Bronze Fully Modular PSU Power Supply - White

  • Wattage: 750W
  • Fully-Modular
  • 80 Plus Bronze
  • 120mm RGB Fan

£ 86.99  inc. vat

£ 72.49 ex. vat

More Info

Corsair RM750i RMi Series 750 Watt Fully Modular Power Supply Unit 80 Plus Gold Certified

  • 80 PLUS Gold certified
  • Fully Modular
  • Corsair Link monitoring and control
  • Dimensions 354 x 288 x 232 (mm)

£ 133.98  inc. vat

£ 111.65 ex. vat

0% Interest offers available

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

£ 20.99  inc. vat

£28.98save £7.99

£ 17.49 ex. vat

£24.15save £6.66
More Info

Kolink Modular Power 700W 80 Plus Bronze Modular Power Supply

  • 700W 80Plus Bronze
  • Semi-modular cable management
  • 648W and 54A on a 12V rail
  • 80 PLUS bronze certificate for high efficiency

£ 54.95  inc. vat

£ 45.79 ex. vat

More Info
Sponsored

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

£ 44.98  inc. vat

£64.98save £20.00

£ 37.48 ex. vat

£54.15save £16.67
More Info
Sponsored

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

£ 37.98  inc. vat

£54.95save £16.97

£ 31.65 ex. vat

£45.79save £14.14
More Info
Sponsored

Thermaltake TR2 S Series 500W Power Supply 80 Plus

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

QuickFind: 788081

Mfr part code: PS-TRS-0500NPCWUK-2

£ 32.98  inc. vat

£48.93save £15.95

£ 27.48 ex. vat

£40.77save £13.29
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

£ 76.98  inc. vat

£84.06save £7.08

£ 64.15 ex. vat

£70.05save £5.90
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

£ 82.98  inc. vat

£100.36save £17.38

£ 69.15 ex. vat

£83.63save £14.48
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

£ 25.98  inc. vat

£35.98save £10.00

£ 21.65 ex. vat

£29.98save £8.33
More Info

Corsair HX850 - 850 Watt Fully Modular PSU

  • 80 PLUS® Platinum efficiency
  • Zero RPM Fan Mode
  • Quiet, efficient operation
  • Easy Installation

QuickFind: 788620

Mfr part code: CP-9020138-UK

£ 183.99  inc. vat

£ 153.32 ex. vat

0% Interest offers available

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

£ 34.98  inc. vat

£37.98save £3.00

£ 29.15 ex. vat

£31.65save £2.50
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

£ 37.98  inc. vat

£44.99save £7.01

£ 31.65 ex. vat

£37.49save £5.84
More Info

Xenta 500W 80+ Power Supply Unit 230V with 12cm Fan

  • 500w
  • 12cm Low Noise Fan
  • 80+ Efficiency
  • APFC
  • 3-Pin UK AC adaptor Included

QuickFind: 966445

Mfr part code: XEN-500W

£ 22.98  inc. vat

£31.98save £9.00

£ 19.15 ex. vat

£26.65save £7.50
More Info

Corsair TX550M 550W 80 Plus Gold Power Supply

  • 550W Corsair TX-M Series TX550M PSU
  • 80PLUS Gold
  • Hybrid Modular, Single Rail
  • 43A + 12V, 120mm Fan
  • ATX PSU

QuickFind: 782056

Mfr part code: CP-9020133-UK

£ 69.95  inc. vat

£73.56save £3.61

£ 58.29 ex. vat

£61.30save £3.01
More Info

Corsair RM750x 80+ Gold Fully Modular Power Supply

  • 80 Plus Gold Certified
  • Low Noise Operation
  • Zero RPM Fan Mode
  • 100% Japanese 105'c Capacitors
  • Fully Modular Cables

QuickFind: 858591

Mfr part code: CP-9020179-UK

£ 115.00  inc. vat

£124.98save £9.98

£ 95.83 ex. vat

£104.15save £8.32

0% Interest offers available

More Info

Thermaltake Litepower 450W PSU

  • Ultra-Quiet Fan
  • Cables with High Flexibility
  • High-Quality Components

QuickFind: 856008

Mfr part code: PS-LTP-0450NPCNUK-2

£ 29.99  inc. vat

£34.98save £4.99

£ 24.99 ex. vat

£29.15save £4.16
More Info

Corsair 850 Watt RM850x Fully Modular ATX Power Supply

  • 80 Plus Gold Certified
  • Tuned For Low Noise Operation
  • Zero RPM Fan Mode
  • 100% All Japanese 105'c Capacitors
  • Fully Modular Cables

QuickFind: 861268

Mfr part code: CP-9020180-UK

£ 139.98  inc. vat

£ 116.65 ex. vat

0% Interest offers available

More Info

Seasonic Focus GX-750 750W 80+ Gold Modular Power Supply

  • High-efficiency thanks to 80 PLUS Gold certification
  • Powerful 70A single rail
  • Modular cable management with flat cables
  • 10 Year manufacturer's guarantee

QuickFind: 919254

Mfr part code: FOCUS-GX-750

£ 99.99  inc. vat

£ 83.32 ex. vat

0% Interest offers available

More Info

Corsair RMx Series RM550x 80 PLUS Gold Fully Modular ATX PSU

  • 80 Plus Gold
  • Low Noise Operation
  • Fully Modular
  • 100% All Japanese 105c Capacitors
  • 10 Year Warranty

QuickFind: 856936

Mfr part code: CP-9020177-UK

£ 80.99  inc. vat

£110.00save £29.01

£ 67.49 ex. vat

£91.66save £24.17
More Info

EVGA 500 BQ Power Supply

  • 80 PLUS Bronze
  • Hybrid Modular
  • SLI/CrossFire Ready
  • Single Rail
  • 3 Year Warranty

QuickFind: 768921

Mfr part code: 110-BQ-0500-K3

£ 53.26  inc. vat

£ 44.38 ex. vat

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

£ 26.49  inc. vat

£34.98save £8.49

£ 22.07 ex. vat

£29.15save £7.08
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

£ 33.40  inc. vat

£40.97save £7.57

£ 27.83 ex. vat

£34.14save £6.31
More Info

EVGA 750 BQ Power Supply

  • Quiet and Intelligent Auto Fan for near-silent operation
  • Fan Size / Bearing 140mm Teflon Nano-Steel Bearing
  • 5 Year Warranty

QuickFind: 756500

Mfr part code: 110-BQ-0750-V3

£ 74.66  inc. vat

£ 62.21 ex. vat

More Info

Corsair CX-F RGB Series 750W 80 Plus Bronze Fully Modular PSU Power Supply - White

  • Wattage: 750W
  • Fully-Modular
  • 80 Plus Bronze
  • 120mm RGB Fan

QuickFind: 1125963

Mfr part code: CP-9020227-UK

£ 86.99  inc. vat

£ 72.49 ex. vat

More Info

Corsair RM750i RMi Series 750 Watt Fully Modular Power Supply Unit 80 Plus Gold Certified

  • 80 PLUS Gold certified
  • Fully Modular
  • Corsair Link monitoring and control
  • Dimensions 354 x 288 x 232 (mm)

QuickFind: 715153

Mfr part code: CP-9020082-UK

£ 133.98  inc. vat

£ 111.65 ex. vat

0% Interest offers available

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

£ 20.99  inc. vat

£28.98save £7.99

£ 17.49 ex. vat

£24.15save £6.66
More Info

Kolink Modular Power 700W 80 Plus Bronze Modular Power Supply

  • 700W 80Plus Bronze
  • Semi-modular cable management
  • 648W and 54A on a 12V rail
  • 80 PLUS bronze certificate for high efficiency

QuickFind: 1142015

Mfr part code: KL-700MV2

£ 54.95  inc. vat

£ 45.79 ex. vat

More Info
Showing 1 - 24 of 108 results
Grid List

Return to top

If your power supply does not provide enough power for your system, it can cause serious performance issues or system errors. Whether you are building your own PC, or need to replace a faulty power supply, it is important to work out the type and wattage of the power supply you need.

It is important to check the efficiency rating of your power supply; 80%+ efficiency PSUs are a better option, as they waste less electricity, and do not create as much heat inside your system. You should also consider whether you are 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 will 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 â€" 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.