PC Power Supply Units (61 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 61 results
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Corsair RM1000x 1000W Modular 80+ Gold PSU

  • 8x Molex Connectors
  • 14x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 8+8+6-Pin CPU Power Connector
  • ATX Form Factor

£ 129.99  inc. vat

£149.99save £20.00

£ 108.32 ex. vat

£124.99save £16.67

0% Interest offers available

More Info
Free Next Day Delivery*
Corsair CX-F RGB Series 550W 80 Plus Bronze Fully Modular PSU Power Supply

Corsair CX-F RGB Series 550W 80 Plus Bronze Fully Modular PSU Power Supply

  • Wattage: 550W
  • Fully-Modular
  • 80 Plus Bronze
  • 120mm RGB Fan

£ 49.98  inc. vat

£64.98save £15.00

£ 41.65 ex. vat

£54.15save £12.50
More Info

Thermaltake Toughpower GF 850 Watt 80+ Gold Fully Modular Power Supply

  • 850W 80+ Gold
  • Fully Modular
  • SLI/CrossFire
  • 140mm Fan, ATX,
  • 10 Year Warranty

£ 89.99  inc. vat

£ 74.99 ex. vat

More Info
Free Next Day Delivery* Corsair TX850M  80 PLUS Bronze Certified 850 Watts

Corsair TX850M 80 PLUS Bronze Certified 850 Watts

  • 8 Molex Connectors
  • 8 SATA Connectors
  • 4 PCI-E Connectors (6+2-Pin)
  • 0 Floppy Connectors
  • 4 + 4-Pin CPU Power Connector

£ 86.99  inc. vat

£ 72.49 ex. vat

More Info

Thermaltake Toughpower GF 750W - TT Premium Edition

  • 750W 80+ Gold
  • Ultra Quiet 140mm Hydraulic Bearing Fan
  • Fully Modular
  • Premium Japanese Capacitors
  • 10 Year Warranty

£ 82.49  inc. vat

£ 68.74 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...

£ 29.99  inc. vat

£34.50save £4.51

£ 24.99 ex. vat

£28.75save £3.76
More Info

Corsair RMx Series White RM750x Power supply

  • Pristine White Casing
  • Tuned for Low Noise Operation
  • 80 Plus Gold Certified
  • Zero RPM Fan Mode
  • Fully Modular

£ 90.69  inc. vat

£99.99save £9.30

£ 75.57 ex. vat

£83.32save £7.75
More Info

Be Quiet! 500W System Power 9 PSU

  • Rock-solid stability with two strong 12V-rails
  • DC-to-DC technology for tight voltage regulation
  • Multi-GPU support with two PCIe connectors
  • Stand-by drain of less than 0.15 watts

£ 49.98  inc. vat

£53.39save £3.41

£ 41.65 ex. vat

£44.49save £2.84
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

£ 61.98  inc. vat

£66.50save £4.52

£ 51.65 ex. vat

£55.41save £3.76
More Info

Be Quiet! Straight Power 11 1000w - 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

£ 180.80  inc. vat

£ 150.66 ex. vat

0% Interest offers available

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)

£ 116.00  inc. vat

£139.98save £23.98

£ 96.66 ex. vat

£116.65save £19.99

0% Interest offers available

More Info

Antec High Current Gamer 1000W Modular PSU

  • 6x Molex Connectors
  • 12x SATA Connectors
  • 8x PCIe Connectors (6+2-Pin)
  • 4+4-Pin x2 CPU Power Connector
  • ATX Form Factor

£ 156.99  inc. vat

£ 130.82 ex. vat

0% Interest offers available

More Info

Kolink Classic Power 600W 80 Plus Bronze Power Supply

  • 600W
  • Modern look with flat black cables
  • 546W and 45.5A on a 12V rail
  • 80 PLUS bronze certificate for high efficiency

£ 42.99  inc. vat

£ 35.82 ex. vat

More Info

MSI MAG A550BN UK PSU 550W 80 Plus Bronze certified Sleeved non-modular cable

  • 2x Molex Connectors
  • 5x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4+4-Pin CPU Power Connector
  • ATX Form Factor

£ 41.49  inc. vat

£46.26save £4.77

£ 34.57 ex. vat

£38.55save £3.98
More Info

Cougar GEX 650W 80 Plus Gold Fully Modular ATX PSU Series

  • 650W 80 Plus Gold
  • 120mm Silent Fan
  • Fully Modular
  • Up To 91% Efficiency

£ 73.10  inc. vat

£ 60.91 ex. vat

More Info

Corsair RM1000x High Performance Power Supply

  • 80 PLUS Gold certified
  • Zero RPM Fan Mode
  • MTBF 100,000 hours
  • Seven year warranty

£ 230.19  inc. vat

£ 191.82 ex. vat

0% Interest offers available

More Info

Corsair RM650i RMi Series 650 Watt Fully Modular Power Supply Unit (80 Plus Gold Certified)

  • 80 PLUS Gold certified
  • Fully Modular
  • Corsair Link monitoring and control
  • Dimensions 425 x 310 x 445 (mm)

£ 105.99  inc. vat

£ 88.32 ex. vat

0% Interest offers available

More Info

Corsair TX750M 750W Semi-Modular Low Noise Power Supply

  • Low-Noise ATX Power
  • All Japanese Capacitors
  • Dual EPS12V Connections
  • Compact 140mm Length

£ 73.98  inc. vat

£ 61.65 ex. vat

More Info

Kolink Classic Power 700W 80 Plus Bronze Power Supply

  • 700W
  • Modern look with flat black cables
  • 648W and 54A on a 12V rail
  • 80 PLUS bronze certificate for high efficiency

£ 46.00  inc. vat

£ 38.33 ex. vat

More Info

CWT 300W TFX power supply

  • 80mm Cooling Fan
  • Over Power and Voltage Protection
  • 85 x 65 x 175mm (WxHxD)
  • Fits CiT S506 and S503 Cases
  • 12 Months Warranty

£ 34.98  inc. vat

£ 29.15 ex. vat

More Info

MSI MPG A850GF 850W Modular 80+ Gold PSU

  • 5x Molex Connectors
  • 8x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4+4+8-Pin CPU Power Connector
  • ATX Form Factor

£ 119.99  inc. vat

£ 99.99 ex. vat

0% Interest offers available

More Info

NZXT C-Series 750 Watt 80+ Gold Fully Modular PSU/Power Supply

  • Fully Modular
  • 80 PLUS Gold
  • Single Rail 62A
  • 120mm Fan
  • ATX PSU

£ 99.48  inc. vat

£ 82.90 ex. vat

0% Interest offers available

More Info

Premium Braided 30cm PSU Extension Cable Kit - Black

  • 24pin
  • 6pin
  • 4+4pin
  • 6+2pin

£ 12.99  inc. vat

£17.70save £4.71

£ 10.82 ex. vat

£14.75save £3.93
More Info

CORSAIR CV750 CV Series 750 Watt Dual EPS 80 PLUS Bronze Power Supply

  • 750W Non-Modular
  • 120mm Low Noise Fan
  • Compact Design 125mm Long
  • Corsair 3 Year Guarantee

£ 64.98  inc. vat

£ 54.15 ex. vat

More Info

Corsair RM1000x 1000W Modular 80+ Gold PSU

  • 8x Molex Connectors
  • 14x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 8+8+6-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 1144843

Mfr part code: CP-9020201-UK

£ 129.99  inc. vat

£149.99save £20.00

£ 108.32 ex. vat

£124.99save £16.67

0% Interest offers available

More Info
Free Next Day Delivery*

Corsair CX-F RGB Series 550W 80 Plus Bronze Fully Modular PSU Power Supply

  • Wattage: 550W
  • Fully-Modular
  • 80 Plus Bronze
  • 120mm RGB Fan

QuickFind: 1125956

Mfr part code: CP-9020216-UK

£ 49.98  inc. vat

£64.98save £15.00

£ 41.65 ex. vat

£54.15save £12.50
More Info

Thermaltake Toughpower GF 850 Watt 80+ Gold Fully Modular Power Supply

  • 850W 80+ Gold
  • Fully Modular
  • SLI/CrossFire
  • 140mm Fan, ATX,
  • 10 Year Warranty

QuickFind: 1139881

Mfr part code: PS-TPD-0850FNFAGK-2

£ 89.99  inc. vat

£ 74.99 ex. vat

More Info
Free Next Day Delivery*

Corsair TX850M 80 PLUS Bronze Certified 850 Watts

  • 8 Molex Connectors
  • 8 SATA Connectors
  • 4 PCI-E Connectors (6+2-Pin)
  • 0 Floppy Connectors
  • 4 + 4-Pin CPU Power Connector

QuickFind: 782059

Mfr part code: CP-9020130-UK

£ 86.99  inc. vat

£ 72.49 ex. vat

More Info

Thermaltake Toughpower GF 750W - TT Premium Edition

  • 750W 80+ Gold
  • Ultra Quiet 140mm Hydraulic Bearing Fan
  • Fully Modular
  • Premium Japanese Capacitors
  • 10 Year Warranty

QuickFind: 1139886

Mfr part code: PS-TPD-0750FNFAGK-2

£ 82.49  inc. vat

£ 68.74 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

£ 29.99  inc. vat

£34.50save £4.51

£ 24.99 ex. vat

£28.75save £3.76
More Info

Corsair RMx Series White RM750x Power supply

  • Pristine White Casing
  • Tuned for Low Noise Operation
  • 80 Plus Gold Certified
  • Zero RPM Fan Mode
  • Fully Modular

QuickFind: 864766

Mfr part code: CP-9020187-UK

£ 90.69  inc. vat

£99.99save £9.30

£ 75.57 ex. vat

£83.32save £7.75
More Info

Be Quiet! 500W System Power 9 PSU

  • Rock-solid stability with two strong 12V-rails
  • DC-to-DC technology for tight voltage regulation
  • Multi-GPU support with two PCIe connectors
  • Stand-by drain of less than 0.15 watts

QuickFind: 859747

Mfr part code: BN246

£ 49.98  inc. vat

£53.39save £3.41

£ 41.65 ex. vat

£44.49save £2.84
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

£ 61.98  inc. vat

£66.50save £4.52

£ 51.65 ex. vat

£55.41save £3.76
More Info

Be Quiet! Straight Power 11 1000w - 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: 826243

Mfr part code: BN285

£ 180.80  inc. vat

£ 150.66 ex. vat

0% Interest offers available

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

£ 116.00  inc. vat

£139.98save £23.98

£ 96.66 ex. vat

£116.65save £19.99

0% Interest offers available

More Info

Antec High Current Gamer 1000W Modular PSU

  • 6x Molex Connectors
  • 12x SATA Connectors
  • 8x PCIe Connectors (6+2-Pin)
  • 4+4-Pin x2 CPU Power Connector
  • ATX Form Factor

QuickFind: 1420241

Mfr part code: 0-761345-11774-6

£ 156.99  inc. vat

£ 130.82 ex. vat

0% Interest offers available

More Info

Kolink Classic Power 600W 80 Plus Bronze Power Supply

  • 600W
  • Modern look with flat black cables
  • 546W and 45.5A on a 12V rail
  • 80 PLUS bronze certificate for high efficiency

QuickFind: 1418094

Mfr part code: KL-600V2

£ 42.99  inc. vat

£ 35.82 ex. vat

More Info

MSI MAG A550BN UK PSU 550W 80 Plus Bronze certified Sleeved non-modular cable

  • 2x Molex Connectors
  • 5x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4+4-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 1413127

Mfr part code: MAG A550BN

£ 41.49  inc. vat

£46.26save £4.77

£ 34.57 ex. vat

£38.55save £3.98
More Info

Cougar GEX 650W 80 Plus Gold Fully Modular ATX PSU Series

  • 650W 80 Plus Gold
  • 120mm Silent Fan
  • Fully Modular
  • Up To 91% Efficiency

QuickFind: 1126391

Mfr part code: GEX650

£ 73.10  inc. vat

£ 60.91 ex. vat

More Info

Corsair RM1000x High Performance Power Supply

  • 80 PLUS Gold certified
  • Zero RPM Fan Mode
  • MTBF 100,000 hours
  • Seven year warranty

QuickFind: 724685

Mfr part code: CP-9020094-UK

£ 230.19  inc. vat

£ 191.82 ex. vat

0% Interest offers available

More Info

Corsair RM650i RMi Series 650 Watt Fully Modular Power Supply Unit (80 Plus Gold Certified)

  • 80 PLUS Gold certified
  • Fully Modular
  • Corsair Link monitoring and control
  • Dimensions 425 x 310 x 445 (mm)

QuickFind: 715152

Mfr part code: CP-9020081-UK

£ 105.99  inc. vat

£ 88.32 ex. vat

0% Interest offers available

More Info

Corsair TX750M 750W Semi-Modular Low Noise Power Supply

  • Low-Noise ATX Power
  • All Japanese Capacitors
  • Dual EPS12V Connections
  • Compact 140mm Length

QuickFind: 1420068

Mfr part code: CP-9020230-UK

£ 73.98  inc. vat

£ 61.65 ex. vat

More Info

Kolink Classic Power 700W 80 Plus Bronze Power Supply

  • 700W
  • Modern look with flat black cables
  • 648W and 54A on a 12V rail
  • 80 PLUS bronze certificate for high efficiency

QuickFind: 1418095

Mfr part code: KL-700V2

£ 46.00  inc. vat

£ 38.33 ex. vat

More Info

CWT 300W TFX power supply

  • 80mm Cooling Fan
  • Over Power and Voltage Protection
  • 85 x 65 x 175mm (WxHxD)
  • Fits CiT S506 and S503 Cases
  • 12 Months Warranty

QuickFind: 1142138

Mfr part code: CWTPSUGPF300PBOX

£ 34.98  inc. vat

£ 29.15 ex. vat

More Info

MSI MPG A850GF 850W Modular 80+ Gold PSU

  • 5x Molex Connectors
  • 8x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4+4+8-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 1128798

Mfr part code: MPG A850GF

£ 119.99  inc. vat

£ 99.99 ex. vat

0% Interest offers available

More Info

NZXT C-Series 750 Watt 80+ Gold Fully Modular PSU/Power Supply

  • Fully Modular
  • 80 PLUS Gold
  • Single Rail 62A
  • 120mm Fan
  • ATX PSU

QuickFind: 981964

Mfr part code: NP-C750M-UK

£ 99.48  inc. vat

£ 82.90 ex. vat

0% Interest offers available

More Info

Premium Braided 30cm PSU Extension Cable Kit - Black

  • 24pin
  • 6pin
  • 4+4pin
  • 6+2pin

QuickFind: 912961

Mfr part code: PSUBLACK

£ 12.99  inc. vat

£17.70save £4.71

£ 10.82 ex. vat

£14.75save £3.93
More Info

CORSAIR CV750 CV Series 750 Watt Dual EPS 80 PLUS Bronze Power Supply

  • 750W Non-Modular
  • 120mm Low Noise Fan
  • Compact Design 125mm Long
  • Corsair 3 Year Guarantee

QuickFind: 1424906

Mfr part code: CP-9020237-UK

£ 64.98  inc. vat

£ 54.15 ex. vat

More Info
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Power Supplies for your system

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 is 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 does not 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.

What parts are powered by the computer PSU?

The motherboard, CPU, RAM disc drives, hard drive and more or less everything contained in the computer chassis are powered by the power supply. All the external devices such as printers and monitors have a standard power source such as the mains power supply. If you have a laptop or an All-in-one computer, the display is powered by the computer power supply.

Does the fan use a power supply?

Whenever your computer is on then the fan should always be running. If the fan is not moving, and by moving we mean spinning, then your computer needs attention. Either the fan itself is broken or the power supply needs looking at. There are certain power supplies which have variable controls, and these can increase or decrease the speed of your fan depending on its temperature inside the computer. The main point though is that your fan (or fans) must ALWAYS be spinning.

Is it OK to leave your computer on overnight?

It is always a good idea to turn off your computer overnight. For a start, it saves using your electricity unnecessarily. Sometimes, you may need to keep your computer on, for example for updates, security scanning and doing backups. Alternatively, you could do these tasks during the day if you are not planning to use your computer for certain periods.

Does turning off a computer wear down the power switch?

Prior to 1994 there were issues with power buttons breaking easily, which made people apprehensive about actually turning off their computer. Today, problems like that are a thing of the past. Of course, power buttons can still wear out, but the truth is, they have a lifecycle which outlasts many of the other components in your computer, so there is nothing to worry about.

Can turning off your computer cause soldering cracks?

No. Soldering can withstand changes of temperature easily. Most people have multiple TVs in their homes and these are turned on and off all the time, so you can see that it can withstand all the daily operations without any problems at all.

Can you prevent a power surge by turning off your computer?

No, a power surge will happen regardless of what you do with your computer. Having your computer power cord connected to a surge protector can safeguard a computer from an electrical surge. And thus from any potential damage. To prevent any damage to your computer during storms, blackouts or other power-related problems, use a UPS (uninterruptable power supply) which will provide you with power for an amount of time, during which the issues will hopefully be solved.