PC Power Supply Units (71 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 71 results
Grid
List

Corsair RM1000e 1000W Fully Modular 80 Plus Gold Power Supply

  • 1000W Fully Modular
  • 120mm Cooling Fan
  • 105c Rated Capacitors
  • Dual 8-Pin EPS12V Cables
  • 7 Year Warranty

£ 119.99  inc. vat

£165.99save £46.00

£ 99.99 ex. vat

£138.32save £38.33

0% Interest offers available

More Info

Corsair RM850x 850W Modular 80+ Gold PSU

  • 4x Molex Connectors
  • 10x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4+4+8-Pin CPU Power Connector
  • ATX Form Factor

£ 139.98  inc. vat

£147.99save £8.01

£ 116.65 ex. vat

£123.32save £6.67

0% Interest offers available

More Info

Premium Braided PSU Extension Cable Kit - Red & Black

  • High-quality, rugged, and routable modular 18AWG multi-color PSU...
  • High-density flexible protective sleeve for a stiff yet adaptable...
  • 2 Year Warranty

£ 4.98  inc. vat

£12.00save £7.02

£ 4.15 ex. vat

£10.00save £5.85
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

CiT FX Pro 700W 80 PLUS Bronze Non-Modular PSU Power Supply

  • Wattage: 700W
  • Non-Modular Cables
  • 80 Plus Bronze
  • Fan Size: 140mm
  • Warranty: 2 Year Warranty

£ 36.99  inc. vat

£ 30.82 ex. vat

More Info

Premium Braided 30cm PSU Extension Cable Kit - White

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

£ 12.58  inc. vat

£ 10.48 ex. vat

More Info

CORSAIR RMe Series RM850e Fully Modular 80PLUS Gold ATX Power Supply

  • Intel® ATX 3.0 Certified
  • 105°C-Rated Capacitors
  • Modern Standby Compatible
  • 80 PLUS Gold-Certified
  • Zero RPM Fan Mode

£ 124.98  inc. vat

£ 104.15 ex. vat

0% Interest offers available

More Info

MSI MPG A850G PCIe5 ATX 3.0 850W Modular Power Supply 80 Plus Gold

  • Supports Nvidia® GeForce RTX® 40 Series graphics cards
  • Full modular design
  • Flat cables
  • 80 Plus Gold certified for high efficiency

£ 139.98  inc. vat

£172.13save £32.15

£ 116.65 ex. vat

£143.44save £26.79

0% Interest offers available

More Info

Asus ROG Thor 1000W Platinum II Power Supply

  • 80 Plus Platinum
  • OLED Power Draw Display
  • 135mm Axial-Tech PWM Fan
  • 100% Japanese Capacitors
  • Aura Sync

£ 294.99  inc. vat

£ 245.82 ex. vat

0% Interest offers available

More Info

MSI MEG A1000G 1000W PCIE5 80 Plus Gold Fully Modular Power Supply

  • 1000W 80 Plus Gold
  • PCIe 5.0 and ATX 3.0 Ready
  • 100% Japanese Capacitors
  • 120mm Hydro-Dynamic Bearing Fan

£ 169.98  inc. vat

£209.99save £40.01

£ 141.65 ex. vat

£174.99save £33.34

0% Interest offers available

More Info

ASUS TUF Gaming 1000W Fully Modular 80+ Gold ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • Dual Ball Fan Bearings
  • Protective PCB Coating
  • 135mm Axial-Tech Fan Design
  • 10 Year Warranty

£ 189.99  inc. vat

£ 158.32 ex. vat

0% Interest offers available

More Info

CiT 400W Micro Atx Power Supply

  • 400w Micro ATX PSU
  • 4 x 4-Pin Molex Connectors, 2 x SATA Connectors
  • Dimensions 125mm x 65mm x 100mm (W x H x D)

£ 21.99  inc. vat

£ 18.32 ex. vat

More Info

Be Quiet! System Power 10 550W Power Supply 80 Plus Bronze

  • Dependable operation to support powerful GPUs
  • Stand-by drain of less than 0.15 watts
  • 80 PLUS Bronze efficiency (up to 89.1%)
  • Attractive black flat cables
  • Complete suite of top safety features

£ 55.49  inc. vat

£ 46.24 ex. vat

More Info

be quiet! 12VHPWR Adapter Cable

  • 600W rated
  • Handles all graphics cards requiring an 12VHPWR connector
  • Requires 2 be quiet! 12-pin PCIe-Connectors on PSU side

£ 15.99  inc. vat

£ 13.32 ex. vat

More Info
Free Next Day Delivery* Corsair RM1200x Shift Series, 1200W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

Corsair RM1200x Shift Series, 1200W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

  • Fully Modular
  • 1200 Watts
  • 80 PLUS Gold Certified
  • PCIe 5.0 ATX 3.0 Certified
  • 10 Year Warranty

£ 234.99  inc. vat

£259.98save £24.99

£ 195.82 ex. vat

£216.65save £20.83

0% Interest offers available

More Info
Free Next Day Delivery* Corsair RM750x Shift Series, 750W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

Corsair RM750x Shift Series, 750W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

  • 750 Watts
  • 80 Plus efficiency Gold
  • 140mm Fan
  • PCIe 5.0 ATX 3.0 Certified
  • 10 Year Warranty

£ 146.99  inc. vat

£159.99save £13.00

£ 122.49 ex. vat

£133.32save £10.83

0% Interest offers available

More Info

TUF Gaming 750W Fully Modular 80+ Gold ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • Dual Ball Fan Bearings
  • Protective PCB Coating
  • 135mm Axial-Tech Fan Design
  • 10 Year Warranty

£ 139.98  inc. vat

£ 116.65 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

Seasonic G12 GC-850 Watt Fully Wired 80+ Gold PSU/Power Supply

  • Fully Wired
  • 80 PLUS Gold
  • Single Rail 70A
  • 120mm Fan
  • ATX PSU

£ 98.76  inc. vat

£ 82.30 ex. vat

More Info

Straight Power 11 750w - 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

£ 123.99  inc. vat

£ 103.32 ex. vat

0% Interest offers available

More Info

CIT Micro ATX 300W Fully Wired Efficient Power Supply

  • Grey Coloured PSU with a 80mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 15 Amps
  • 1 Year Warranty for Peace of Mind

£ 18.32  inc. vat

£ 15.26 ex. vat

More Info

CORSAIR RMe Series RM1000e Fully Modular 80PLUS Gold ATX Power Supply

  • Intel® ATX 3.0 Certified
  • 105°C-Rated Capacitors
  • Modern Standby Compatible
  • 80 PLUS Gold-Certified
  • Zero RPM Fan Mode

£ 152.99  inc. vat

£ 127.49 ex. vat

0% Interest offers available

More Info

CORSAIR SF-L Series SF850L Fully Modular Low-Noise SFX Power Supply

  • Fully Modular, Micro-Fit PSU Connectors
  • 120mm Rifle Bearing PWM Fan
  • 100% Japanese 105°C-Rated Electrolytic Capacitors
  • Modern Standby Support

£ 189.99  inc. vat

£ 158.32 ex. vat

0% Interest offers available

More Info

CiT FX Pro 800W 80 PLUS Bronze Non-Modular PSU Power Supply

  • Wattage: 800w
  • Non-Modular Cables
  • 80 Plus Bronze
  • Fan Size: 140mm
  • Warranty: 2 Year Warranty

£ 47.49  inc. vat

£ 39.57 ex. vat

More Info

Corsair RM1000e 1000W Fully Modular 80 Plus Gold Power Supply

  • 1000W Fully Modular
  • 120mm Cooling Fan
  • 105c Rated Capacitors
  • Dual 8-Pin EPS12V Cables
  • 7 Year Warranty

QuickFind: 1539702

Mfr part code: CP-9020250-UK

£ 119.99  inc. vat

£165.99save £46.00

£ 99.99 ex. vat

£138.32save £38.33

0% Interest offers available

More Info

Corsair RM850x 850W Modular 80+ Gold PSU

  • 4x Molex Connectors
  • 10x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4+4+8-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 1144842

Mfr part code: CP-9020200-UK

£ 139.98  inc. vat

£147.99save £8.01

£ 116.65 ex. vat

£123.32save £6.67

0% Interest offers available

More Info

Premium Braided PSU Extension Cable Kit - Red & Black

  • High-quality, rugged, and routable modular 18AWG multi-color PSU...
  • High-density flexible protective sleeve for a stiff yet adaptable...
  • 2 Year Warranty

QuickFind: 912964

Mfr part code: PSUREDBLACK

£ 4.98  inc. vat

£12.00save £7.02

£ 4.15 ex. vat

£10.00save £5.85
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

CiT FX Pro 700W 80 PLUS Bronze Non-Modular PSU Power Supply

  • Wattage: 700W
  • Non-Modular Cables
  • 80 Plus Bronze
  • Fan Size: 140mm
  • Warranty: 2 Year Warranty

QuickFind: 1818237

Mfr part code: CIT 700W FX PRO

£ 36.99  inc. vat

£ 30.82 ex. vat

More Info

Premium Braided 30cm PSU Extension Cable Kit - White

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

QuickFind: 912963

Mfr part code: PSUWHITE

£ 12.58  inc. vat

£ 10.48 ex. vat

More Info

CORSAIR RMe Series RM850e Fully Modular 80PLUS Gold ATX Power Supply

  • Intel® ATX 3.0 Certified
  • 105°C-Rated Capacitors
  • Modern Standby Compatible
  • 80 PLUS Gold-Certified
  • Zero RPM Fan Mode

QuickFind: 1830187

Mfr part code: CP-9020263-UK

£ 124.98  inc. vat

£ 104.15 ex. vat

0% Interest offers available

More Info

MSI MPG A850G PCIe5 ATX 3.0 850W Modular Power Supply 80 Plus Gold

  • Supports Nvidia® GeForce RTX® 40 Series graphics cards
  • Full modular design
  • Flat cables
  • 80 Plus Gold certified for high efficiency

QuickFind: 1584827

Mfr part code: MPG A850G PCIE5

£ 139.98  inc. vat

£172.13save £32.15

£ 116.65 ex. vat

£143.44save £26.79

0% Interest offers available

More Info

Asus ROG Thor 1000W Platinum II Power Supply

  • 80 Plus Platinum
  • OLED Power Draw Display
  • 135mm Axial-Tech PWM Fan
  • 100% Japanese Capacitors
  • Aura Sync

QuickFind: 1411124

Mfr part code: 90YE00L1-B0NA00

£ 294.99  inc. vat

£ 245.82 ex. vat

0% Interest offers available

More Info

MSI MEG A1000G 1000W PCIE5 80 Plus Gold Fully Modular Power Supply

  • 1000W 80 Plus Gold
  • PCIe 5.0 and ATX 3.0 Ready
  • 100% Japanese Capacitors
  • 120mm Hydro-Dynamic Bearing Fan

QuickFind: 1541428

Mfr part code: MPG A1000G PCIE5

£ 169.98  inc. vat

£209.99save £40.01

£ 141.65 ex. vat

£174.99save £33.34

0% Interest offers available

More Info

ASUS TUF Gaming 1000W Fully Modular 80+ Gold ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • Dual Ball Fan Bearings
  • Protective PCB Coating
  • 135mm Axial-Tech Fan Design
  • 10 Year Warranty

QuickFind: 1541415

Mfr part code: 90YE00S1-B0NA00

£ 189.99  inc. vat

£ 158.32 ex. vat

0% Interest offers available

More Info

CiT 400W Micro Atx Power Supply

  • 400w Micro ATX PSU
  • 4 x 4-Pin Molex Connectors, 2 x SATA Connectors
  • Dimensions 125mm x 65mm x 100mm (W x H x D)

QuickFind: 713444

Mfr part code: M-400U

£ 21.99  inc. vat

£ 18.32 ex. vat

More Info

Be Quiet! System Power 10 550W Power Supply 80 Plus Bronze

  • Dependable operation to support powerful GPUs
  • Stand-by drain of less than 0.15 watts
  • 80 PLUS Bronze efficiency (up to 89.1%)
  • Attractive black flat cables
  • Complete suite of top safety features

QuickFind: 1792854

Mfr part code: BN327

£ 55.49  inc. vat

£ 46.24 ex. vat

More Info

be quiet! 12VHPWR Adapter Cable

  • 600W rated
  • Handles all graphics cards requiring an 12VHPWR connector
  • Requires 2 be quiet! 12-pin PCIe-Connectors on PSU side

QuickFind: 1792841

Mfr part code: BC072

£ 15.99  inc. vat

£ 13.32 ex. vat

More Info
Free Next Day Delivery*

Corsair RM1200x Shift Series, 1200W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

  • Fully Modular
  • 1200 Watts
  • 80 PLUS Gold Certified
  • PCIe 5.0 ATX 3.0 Certified
  • 10 Year Warranty

QuickFind: 1615754

Mfr part code: CP-9020254-UK

£ 234.99  inc. vat

£259.98save £24.99

£ 195.82 ex. vat

£216.65save £20.83

0% Interest offers available

More Info
Free Next Day Delivery*

Corsair RM750x Shift Series, 750W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

  • 750 Watts
  • 80 Plus efficiency Gold
  • 140mm Fan
  • PCIe 5.0 ATX 3.0 Certified
  • 10 Year Warranty

QuickFind: 1615751

Mfr part code: CP-9020251-UK

£ 146.99  inc. vat

£159.99save £13.00

£ 122.49 ex. vat

£133.32save £10.83

0% Interest offers available

More Info

TUF Gaming 750W Fully Modular 80+ Gold ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • Dual Ball Fan Bearings
  • Protective PCB Coating
  • 135mm Axial-Tech Fan Design
  • 10 Year Warranty

QuickFind: 1541417

Mfr part code: 90YE00S3-B0NA00

£ 139.98  inc. vat

£ 116.65 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

Seasonic G12 GC-850 Watt Fully Wired 80+ Gold PSU/Power Supply

  • Fully Wired
  • 80 PLUS Gold
  • Single Rail 70A
  • 120mm Fan
  • ATX PSU

QuickFind: 1287211

Mfr part code: G12-GC-850

£ 98.76  inc. vat

£ 82.30 ex. vat

More Info

Straight Power 11 750w - 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: 826248

Mfr part code: BN283

£ 123.99  inc. vat

£ 103.32 ex. vat

0% Interest offers available

More Info

CIT Micro ATX 300W Fully Wired Efficient Power Supply

  • Grey Coloured PSU with a 80mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 15 Amps
  • 1 Year Warranty for Peace of Mind

QuickFind: 125004

Mfr part code: M-300U

£ 18.32  inc. vat

£ 15.26 ex. vat

More Info

CORSAIR RMe Series RM1000e Fully Modular 80PLUS Gold ATX Power Supply

  • Intel® ATX 3.0 Certified
  • 105°C-Rated Capacitors
  • Modern Standby Compatible
  • 80 PLUS Gold-Certified
  • Zero RPM Fan Mode

QuickFind: 1830188

Mfr part code: CP-9020264-UK

£ 152.99  inc. vat

£ 127.49 ex. vat

0% Interest offers available

More Info

CORSAIR SF-L Series SF850L Fully Modular Low-Noise SFX Power Supply

  • Fully Modular, Micro-Fit PSU Connectors
  • 120mm Rifle Bearing PWM Fan
  • 100% Japanese 105°C-Rated Electrolytic Capacitors
  • Modern Standby Support

QuickFind: 1830178

Mfr part code: CP-9020245-UK

£ 189.99  inc. vat

£ 158.32 ex. vat

0% Interest offers available

More Info

CiT FX Pro 800W 80 PLUS Bronze Non-Modular PSU Power Supply

  • Wattage: 800w
  • Non-Modular Cables
  • 80 Plus Bronze
  • Fan Size: 140mm
  • Warranty: 2 Year Warranty

QuickFind: 1818238

Mfr part code: CIT 800W FX PRO

£ 47.49  inc. vat

£ 39.57 ex. vat

More Info
Showing 1 - 24 of 71 results
Grid
List

Return to top

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.