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.

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View all 25 PC Computer Power Supply Units

Corsair AX 860W Fully Modular 80+ Platinum Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 71.6 Amps
  • Equipped with 6 PCI-E Connectors for Graphics Cards

£161.99 inc. vat

£134.99 ex. vat

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QuickFind: 410789   |   Mfr part code: CP-9020044-UK

Corsair HX1000i High Performance Series (1000 Watt) 80 Plus Platinum Atx Power Supply Unit

  • ZeroRPM mode for fanless operation at low loads
  • 140mm thermally controlled fluid dynamic bearing
  • 80 PLUS Platinum efficiency

£191.33 inc. vat

£159.44 ex. vat

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QuickFind: 663410   |   Mfr part code: CP-9020074-UK

Corsair RM850x High Performance Power Supply

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

£118.98 inc. vat

£99.15 ex. vat

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QuickFind: 724683   |   Mfr part code: CP-9020093-UK

Corsair RM650x High Performance Power Supply

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

£92.61 inc. vat

£77.17 ex. vat

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QuickFind: 724681   |   Mfr part code: CP-9020091-UK

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)

£116.99 inc. vat

£123.99save £7.00

£97.49 ex. vat

£103.32save £5.83
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QuickFind: 715153   |   Mfr part code: CP-9020082-UK

Corsair RM550x High Performance Power Supply

  • 80 PLUS Gold certified
  • Zero RPM Fan Mode
  • MTBF 100,000 hours
  • Warranty Seven years

£92.99 inc. vat

£77.49 ex. vat

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QuickFind: 724659   |   Mfr part code: CP-9020090-UK

EVGA SuperNOVA 850 T2 Power Supply

  • Advanced Hybrid Cable Management
  • PowerCache
  • Extreme Voltage and Fan Tuning

£194.99 inc. vat

£162.49 ex. vat

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QuickFind: 759093   |   Mfr part code: 220-T2-0850-X3

Be Quiet Power Zone 650W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 54 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£89.98 inc. vat

£74.98 ex. vat

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QuickFind: 546364   |   Mfr part code: BN210

Evga Supernova 650 G3 Power Supply

  • 80 PLUS Gold certified
  • Highest Quality Japanese Capacitors
  • Fully Modular
  • SLI & Crossfire Ready
  • 7 Year Warranty

£93.99 inc. vat

£100.78save £6.79

£78.32 ex. vat

£83.98save £5.66
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QuickFind: 768997   |   Mfr part code: 220-G3-0650-Y3

Corsair SF450 450 Watt 80 PLUS Gold Certified High Performance SFX PSU

  • 450 Watts SF Series
  • Fanless mode Yes
  • SFX Form Factor
  • 80 PLUS Gold efficiency

£73.97 inc. vat

£78.63save £4.66

£61.64 ex. vat

£65.52save £3.88
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QuickFind: 745620   |   Mfr part code: CP-9020104-UK

550w G3 80+ Modular Gold

  • 550W EVGA G3
  • 80 PLUS Gold
  • Full Modular
  • SLI/CrossFire
  • Single Rail

£80.99 inc. vat

£67.49 ex. vat

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QuickFind: 769400   |   Mfr part code: 220-G3-0550-Y3

Corsair AX 760W Fully Modular 80+ Platinum Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 63.3 Amps
  • Equipped with 6 PCI-E Connectors for Graphics Cards

£149.99 inc. vat

£124.99 ex. vat

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QuickFind: 410042   |   Mfr part code: CP-9020045-UK

Be Quiet Power Zone 750W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 62 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£104.99 inc. vat

£87.49 ex. vat

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QuickFind: 546365   |   Mfr part code: BN211

Be Quiet Power Zone 1000W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 83 Amps
  • Equipped with 6 PCI-E Connectors for Graphics Cards

£153.99 inc. vat

£128.32 ex. vat

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QuickFind: 546368   |   Mfr part code: BN213

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)

£103.97 inc. vat

£115.98save £12.01

£86.64 ex. vat

£96.65save £10.01
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QuickFind: 715152   |   Mfr part code: CP-9020081-UK

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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.