PC Computer Power Supply Units

Free Delivery available on orders over £49.99*
More information about delivery

14 Day money back guarantee
More information about returns

PC Power Supply Units

When we think of ways to improve our computers performance many of us will overlook the value of the PC power supply unit (PSU). But the power supply unit is a vital piece of equipment that should not be under estimated.

Why You Need A High Quality PSU

The role of a PC power supply unit is to convert the AC electric power that comes from the mains to the DC power that the computer requires. But it can do much more than that. A good quality power supply can make your system more efficient, stable and reliable.

Choosing Your Power Supply

Firstly, ensure you select a PSU from a reputable manufacturer. Here at Ebuyer we have PSUs from Antec, Corsair and Coolermaster amongst other leading names in the tech industry.

Output

When choosing a PSU the output is very important. This output is listed as watts and should be greater than the combined wattage of all the components in your system plus 40 to 60%. Very simplistically speaking the more demands you place on your system the higher the wattage of the PC power supply unit should be. For example, a high end gamer will require a far higher wattage than a home user who surfs the net and does some word processing.

Energy Efficiency

But it isn't all about the wattage. Efficiency is important so look for PSUs that have the 80 Plus certification. This indicates that the PSU will waste less energy than other units making it cheaper to run and much more reliable.

PSU Cabling

There are different types of PSU and cabling. Fully modular power supply units enable the user to remove surplus cables from the case, whilst a semi modular PSU has a mix of detachable and hard wired, or permanent, cables.

The third option is a fully wired PSU which, as the name suggests, does not allow any cables to be disconnected. Of the three the fully modular unit is the most versatile.

View all 192 PC Computer Power Supply Units
  • 1
  • 2
  • 3
  • 4
  • 5
  • 13 pages with 192 products

Corsair 430W V2 CX Series PSU

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 32 Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

£44.99 inc. vat

£37.49 ex. vat

View product

QuickFind: 271798   |   Mfr part code: CP-9020046-UK

Ace Black 120mm Fan 550W Fully Wired Efficient Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 22 Amps
  • 1 Year Warranty for Peace of Mind

£12.99 inc. vat

£15.48save £2.49

£10.82 ex. vat

£12.90save £2.08
View product

QuickFind: 566862   |   Mfr part code: PSUACE550BR

Xenta 400W Fully Wired Efficient Power Supply 

  • 400W rated power
  • 80mm Cooling Fan
  • Low Noise

£8.99 inc. vat

£12.48save £3.49

£7.49 ex. vat

£10.40save £2.91
View product

QuickFind: 722230   |   Mfr part code: X400A

EVGA 650W G2 Fully Modular 80+ PSU

  • Single +12V Rail
  • LLC Resonant Circuit layout
  • Fully Modular
  • Double Ball Bearing Fan
  • Gold Rated Efficiency

£91.98 inc. vat

£76.65 ex. vat

View product

QuickFind: 716706   |   Mfr part code: 220-G2-0650-Y3

Xenta 500W Fully Wired Efficient Power Supply

  • 500W rated power
  • 120mm Cooling Fan
  • Low Noise

£9.99 inc. vat

£12.48save £2.49

£8.32 ex. vat

£10.40save £2.08
View product

QuickFind: 722231   |   Mfr part code: X500A

Corsair CX 500W Fully Wired 80+ Bronze Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 38 Amps
  • Equipped with 2 PCI-E Connectors for Graphics Cards

£42.99 inc. vat

£48.99save £6.00

£35.82 ex. vat

£40.82save £5.00
View product

QuickFind: 278634   |   Mfr part code: CP-9020047-UK

Cooler Master B-series V2 700w Power Supply Unit 80+ Efficiency With Uk Cable

  • Higher than 85% efficiency under typical load operation
  • Active PFC & PWM Combo Control
  • Silent 120mm fan with intelligent fan speed control

£52.98 inc. vat

£67.98save £15.00

£44.15 ex. vat

£56.65save £12.50
View product

QuickFind: 702907   |   Mfr part code: RS700-ACABB1-UK

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)

£36.99 inc. vat

£41.99save £5.00

£30.82 ex. vat

£34.99save £4.17
View product

QuickFind: 713439   |   Mfr part code: ACP-I700HG

Xenta 600W Fully Wired Efficient Power Supply

  • 600W rated power
  • 120mm Cooling Fan
  • Low Noise

£14.99 inc. vat

£18.48save £3.49

£12.49 ex. vat

£15.40save £2.91
View product

QuickFind: 722232   |   Mfr part code: X600A

Corsair CX 600W Fully Wired 80+ Bronze Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 46 Amps
  • Equipped with 2 PCI-E Connectors for Graphics Cards

£64.98 inc. vat

£54.15 ex. vat

View product

QuickFind: 269259   |   Mfr part code: CP-9020048-UK

Ace Black 120mm Fan 650W Fully Wired Efficient Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 30 Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

£16.98 inc. vat

£18.99save £2.01

£14.15 ex. vat

£15.82save £1.67
View product

QuickFind: 566864   |   Mfr part code: PSUACE650BR

EVGA 430W Fully Wired 80+ Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 34 Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

£38.49 inc. vat

£32.07 ex. vat

View product

QuickFind: 630122   |   Mfr part code: 100-W1-0430-KR

Xenta 300W Fully Wired Efficient Power Supply

  • 300W rated power
  • 80mm Cooling Fan
  • Low Noise

£6.99 inc. vat

£10.98save £3.99

£5.82 ex. vat

£9.15save £3.33
View product

QuickFind: 722229   |   Mfr part code: X300A

Corsair VS Series 550 Watt VS550 Power Supply

  • At least 85% efficient (80 PLUS White 230v EU Certified)
  • Corsair engineering and quality control
  • Plentiful connectors and long cables

£45.48 inc. vat

£37.90 ex. vat

View product

QuickFind: 702009   |   Mfr part code: CP-9020097-UK

Element Gaming 600W 80+ Certified PSU 12cm Fan Active PFC

  • 120mm blue Element Gaming fan
  • Black metal casing
  • 80+ efficiency
  • Built in Active PFC for improved stabilised power delivery

£29.99 inc. vat

£24.99 ex. vat

View product

QuickFind: 722233   |   Mfr part code: 600EG1

  • 1
  • 2
  • 3
  • 4
  • 5
  • 13 pages with 192 products