PC Power Supply Units (20 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

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Corsair RM850e 850W Fully Modular 80 Plus Gold Power Supply

  • 850W Fully Modular
  • 120mm Cooling Fan
  • 105c Rated Capacitors
  • Dual 8-Pin EPS12V Cables
  • 7 Year Warranty

£ 132.99  inc. vat

£ 110.82 ex. vat

0% Interest offers available

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Antec Signature 1300w Platinum Fully Modular PSU/Power Supply

  • 1300W Fully Module Power Supply
  • 80 PLUS Platinum
  • 100% Top-Grade Japanese Capacitors
  • 10 year warranty

£ 204.99  inc. vat

£ 170.82 ex. vat

0% Interest offers available

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Thermaltake Toughpower DPS G 1200W Platinum Modular PSU

  • 1200W Modular Power Supply
  • 80 Plus Platinum
  • 100% High Quality Japanese Capacitors

£ 139.98  inc. vat

£207.99save £68.01

£ 116.65 ex. vat

£173.32save £56.67

0% Interest offers available

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Aerocool Cylon 700w Semi-modular Psu 80+

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

£ 48.40  inc. vat

£52.82save £4.42

£ 40.33 ex. vat

£44.01save £3.68
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Thermaltake Toughpower PF1 850W 80+ Platinum ARGB Full Modular Power Supply

  • 80 Plus Platinum 850W Power Supply
  • Sync with Asus, Gigabyte, MSI and ASRock Boards
  • 100% Japanese Capacitors
  • 10 Year Warranty

£ 139.98  inc. vat

£174.99save £35.01

£ 116.65 ex. vat

£145.82save £29.17

0% Interest offers available

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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 MPG A850G PCIe5 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

£ 169.98  inc. vat

£ 141.65 ex. vat

0% Interest offers available

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Premium Braided 30cm PSU Extension Cable Kit - Black

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

£ 12.59  inc. vat

£ 10.49 ex. vat

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EXDISPLAY Corsair SF750 750w 80 Plus Platinum High Performance SFX Power Supply

£ 121.95  inc. vat

£ 101.62 ex. vat

0% Interest offers available

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TUF Gaming 850W 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

£ 159.99  inc. vat

£ 133.32 ex. vat

0% Interest offers available

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ROG Loki SFX-L 850W Fully Modular 80+ Platinum ARGB Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • PCIe 5.0 Ready and ATX3.0 Compatible
  • 120mm PWM Dual Ball Fan Bearings
  • ROG Heatsinks
  • ARGB Fan with Aura Sync
  • 10 Year Warranty

£ 244.98  inc. vat

£ 204.15 ex. vat

0% Interest offers available

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Premium Braided 30cm PSU Extension Cable Kit - White

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

£ 12.59  inc. vat

£ 10.49 ex. vat

More Info

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

ROG Loki SFX-L 1000W Fully Modular 80+ Platinum Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • PCIe 5.0 Ready and ATX3.0 Compatible
  • 120mm PWM Dual Ball Fan Bearings
  • ROG Heatsinks
  • ARGB Fan with Aura Sync
  • 10 Year Warranty

Coming Soon

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

Kolink Classic Power 400W 80 Plus Bronze Power Supply

  • 2x Molex Connectors
  • 3x SATA Connectors
  • 1x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

£ 35.99  inc. vat

£ 29.99 ex. vat

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Antec VP 400 PC EC

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

£ 37.00  inc. vat

£ 30.83 ex. vat

More Info

MSI MEG Ai1300P 1300W PCIE5 80 Plus Platinum Fully Modular Power Supply

  • 1300W 80 Plus Platinum
  • PCIe 5.0 and ATX 3.0 Ready
  • 100% Japanese Capacitors
  • 120mm Hydro-Dynamic Bearing Fan

Coming Soon

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

ROG Loki SFX-L 750W Fully Modular 80+ Platinum ARGB Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • PCIe 5.0 Ready and ATX3.0 Compatible
  • 120mm PWM Dual Ball Fan Bearings
  • ROG Heatsinks
  • ARGB Fan with Aura Sync
  • 10 Year Warranty

£ 209.99  inc. vat

£ 174.99 ex. vat

0% Interest offers available

More Info

Corsair RM850e 850W Fully Modular 80 Plus Gold Power Supply

  • 850W Fully Modular
  • 120mm Cooling Fan
  • 105c Rated Capacitors
  • Dual 8-Pin EPS12V Cables
  • 7 Year Warranty

QuickFind: 1539701

Mfr part code: CP-9020249-UK

£ 132.99  inc. vat

£ 110.82 ex. vat

0% Interest offers available

More Info

Antec Signature 1300w Platinum Fully Modular PSU/Power Supply

  • 1300W Fully Module Power Supply
  • 80 PLUS Platinum
  • 100% Top-Grade Japanese Capacitors
  • 10 year warranty

QuickFind: 1264293

Mfr part code: 0-761345-11708-1

£ 204.99  inc. vat

£ 170.82 ex. vat

0% Interest offers available

More Info

Thermaltake Toughpower DPS G 1200W Platinum Modular PSU

  • 1200W Modular Power Supply
  • 80 Plus Platinum
  • 100% High Quality Japanese Capacitors

QuickFind: 1287558

Mfr part code: PS-TPG-1200DPCPEU-P

£ 139.98  inc. vat

£207.99save £68.01

£ 116.65 ex. vat

£173.32save £56.67

0% Interest offers available

More Info

Aerocool Cylon 700w Semi-modular Psu 80+

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

QuickFind: 958729

Mfr part code: ACPW-CM70AKC.11

£ 48.40  inc. vat

£52.82save £4.42

£ 40.33 ex. vat

£44.01save £3.68
More Info

Thermaltake Toughpower PF1 850W 80+ Platinum ARGB Full Modular Power Supply

  • 80 Plus Platinum 850W Power Supply
  • Sync with Asus, Gigabyte, MSI and ASRock Boards
  • 100% Japanese Capacitors
  • 10 Year Warranty

QuickFind: 1139882

Mfr part code: PS-TPD-0850F3FAPK-1

£ 139.98  inc. vat

£174.99save £35.01

£ 116.65 ex. vat

£145.82save £29.17

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 MPG A850G PCIe5 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

£ 169.98  inc. vat

£ 141.65 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

£ 12.59  inc. vat

£ 10.49 ex. vat

More Info

EXDISPLAY Corsair SF750 750w 80 Plus Platinum High Performance SFX Power Supply

QuickFind: 1584879

Mfr part code: EBR2-CP-9020186-UK

£ 121.95  inc. vat

£ 101.62 ex. vat

0% Interest offers available

More Info

TUF Gaming 850W 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: 1541416

Mfr part code: 90YE00S2-B0NA00

£ 159.99  inc. vat

£ 133.32 ex. vat

0% Interest offers available

More Info

ROG Loki SFX-L 850W Fully Modular 80+ Platinum ARGB Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • PCIe 5.0 Ready and ATX3.0 Compatible
  • 120mm PWM Dual Ball Fan Bearings
  • ROG Heatsinks
  • ARGB Fan with Aura Sync
  • 10 Year Warranty

QuickFind: 1541413

Mfr part code: 90YE00N3-B0NA00

£ 244.98  inc. vat

£ 204.15 ex. vat

0% Interest offers available

More Info

Premium Braided 30cm PSU Extension Cable Kit - White

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

QuickFind: 912963

Mfr part code: PSUWHITE

£ 12.59  inc. vat

£ 10.49 ex. vat

More Info

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

ROG Loki SFX-L 1000W Fully Modular 80+ Platinum Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • PCIe 5.0 Ready and ATX3.0 Compatible
  • 120mm PWM Dual Ball Fan Bearings
  • ROG Heatsinks
  • ARGB Fan with Aura Sync
  • 10 Year Warranty

QuickFind: 1541412

Mfr part code: 90YE00N1-B0NA00

Coming Soon

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

Kolink Classic Power 400W 80 Plus Bronze Power Supply

  • 2x Molex Connectors
  • 3x SATA Connectors
  • 1x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 1138175

Mfr part code: KL-400V2

£ 35.99  inc. vat

£ 29.99 ex. vat

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

£ 37.00  inc. vat

£ 30.83 ex. vat

More Info

MSI MEG Ai1300P 1300W PCIE5 80 Plus Platinum Fully Modular Power Supply

  • 1300W 80 Plus Platinum
  • PCIe 5.0 and ATX 3.0 Ready
  • 100% Japanese Capacitors
  • 120mm Hydro-Dynamic Bearing Fan

QuickFind: 1541427

Mfr part code: MEG AI1300P PCIE5

Coming Soon

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

ROG Loki SFX-L 750W Fully Modular 80+ Platinum ARGB Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • PCIe 5.0 Ready and ATX3.0 Compatible
  • 120mm PWM Dual Ball Fan Bearings
  • ROG Heatsinks
  • ARGB Fan with Aura Sync
  • 10 Year Warranty

QuickFind: 1541414

Mfr part code: 90YE00N4-B0NA00

£ 209.99  inc. vat

£ 174.99 ex. vat

0% Interest offers available

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.