PC Computer Power Supply Units

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.

Read more...

View more...
View all 48 PC Computer Power Supply Units

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

£ 15.51  inc. vat

£12.92 ex. vat

View Product

QuickFind: 566862   |   Mfr part code: PSUACE550BR

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

£ 40.13  inc. vat

£43.10save £2.97

£33.44 ex. vat

£35.91save £2.47
View Product

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

Aerocool Integrator 500W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable

  • High Efficiency
  • 500w 80+ Efficiency
  • 12cm Fan
  • Dimensions 150mm x 85mm x 140mm (W x H x D)

£ 29.34  inc. vat

£24.45 ex. vat

View Product

QuickFind: 713434   |   Mfr part code: ACP-I500HG

Ace Black 120mm Fan 700W 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

£ 20.25  inc. vat

£16.87 ex. vat

View Product

QuickFind: 566865   |   Mfr part code: PSUACE700BR

Evga 430w 80+ White Series Psu

  • 80 Plus Efficiency
  • Continuous Power
  • 12V Single Rail

£ 33.22  inc. vat

£27.68 ex. vat

View Product

QuickFind: 766944   |   Mfr part code: 100-W1-0430-K3

Corsair VS Series 450 Watt Power Supply

  • A dedicated single +12V rail offers maximum
  • Conforms to ATX12V v2.31 standard,
  • AC input from 200~240VAV

£ 37.98  inc. vat

£31.65 ex. vat

View Product

QuickFind: 726366   |   Mfr part code: CP-9020096-UK

Cooler Master MasterWatt Lite 400 PSU

  • Advanced Circuit Design
  • Silent and Durable Fan
  • Green Power
  • 85% efficiency
  • 80 Plus

£ 38.72  inc. vat

£32.26 ex. vat

View Product

QuickFind: 773356   |   Mfr part code: MPX-4001-ACABW-UK

CIT Gold 750W Fully Wired Efficient Power Supply

  • Gold Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto 44 Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

£ 26.92  inc. vat

£28.98save £2.06

£22.43 ex. vat

£24.15save £1.72
View Product

QuickFind: 255454   |   Mfr part code: PSUCIT750UGOLD

Ace Black 120mm Fan 500W Fully Wired Efficient Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 18 Amps
  • 1 Year Warranty for Peace of Mind

£ 16.42  inc. vat

£13.68 ex. vat

View Product

QuickFind: 566861   |   Mfr part code: PSUACE500BR

EVGA 450B Bronze Power Supply

  • 80 PLUS Bronze certified
  • Heavy-duty protections
  • Quiet and Intelligent Auto Fan for near-silent operation
  • 3 Year Warranty

£ 36.48  inc. vat

£38.39save £1.91

£30.40 ex. vat

£31.99save £1.59
View Product

QuickFind: 759087   |   Mfr part code: 100-B1-0450-K3

CIT 850W Black Edition PSU 12cm Dual 12v CE PFC Model 850UB

  • Cooling: 12cm Silent Fan
  • Silent and Better Ventilation
  • ATX 12V Compliant for all Types of CPU and Mainboard
  • Dual 12v Rails

£ 36.11  inc. vat

£39.82save £3.71

£30.09 ex. vat

£33.18save £3.09
View Product

QuickFind: 191844   |   Mfr part code: PSUCIT850UB

CIT Dual Rail 750W Fully Wired Efficient Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto 44 Amps
  • Equipped with 1 PCI-E Connectors for Graphics Cards

£ 31.35  inc. vat

£26.12 ex. vat

View Product

QuickFind: 159708   |   Mfr part code: PSUCIT750UB

ACE 520W 12cm Fan SATA 20+4pin Grey PSU

  • Cooling: 12cm Fan
  • Silent and Better Ventilation
  • ATX 12V Compliant for all Types of CPU and Mainboard
  • CE Approved

£ 18.94  inc. vat

£15.78 ex. vat

View Product

QuickFind: 255701   |   Mfr part code: PSUACE52012CM

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

£ 20.00  inc. vat

£16.66 ex. vat

View Product

QuickFind: 566864   |   Mfr part code: PSUACE650BR

Antec VP 450p 450w PSU

  • Quiet Cooling
  • Short Circuit Protection (SCP)
  • Over Power Protection (OPP)
  • Dimensions 150mm x 86mm x 140mm (WxHxD)

£ 38.46  inc. vat

£32.05 ex. vat

View Product

QuickFind: 663454   |   Mfr part code: 0-761345-06451-4

Return to top

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.