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 29 PC Computer Power Supply Units

Corsair RM650x High Performance Power Supply

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

£ 84.11  inc. vat

£92.67save £8.56

£70.09 ex. vat

£77.22save £7.13
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QuickFind: 724681   |   Mfr part code: CP-9020091-UK

Corsair HX750i 750 Watt Power Supply

  • 80 PLUS Platinum efficiency, delivering 92% energy efficiency at real...
  • ZeroRPM mode for fan-less operation at low loads and outstanding noise...

£ 124.42  inc. vat

£132.51save £8.09

£103.68 ex. vat

£110.42save £6.74
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QuickFind: 659514   |   Mfr part code: CP-9020072-UK

550w G3 80+ Modular Gold

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

£ 80.09  inc. vat

£66.74 ex. vat

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

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

£ 170.78  inc. vat

£142.31 ex. vat

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

Corsair SF Series 600 Watt 80 PLUS Gold Certified High Performance SFX PSU

  • 600 Watts SF Series
  • Fanless mode Yes
  • SFX Form Factor
  • 80 PLUS Gold certified
  • Zero RPM Fan Mode

£ 100.98  inc. vat

£84.15 ex. vat

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QuickFind: 745622   |   Mfr part code: CP-9020105-UK

Evga 1000w G3 80+ Modular Gold

  • Unbeatable 10 Year Warranty
  • 80 PLUS Gold certified
  • Hydraulic Dynamic Bearing Fan
  • Fully Modular

£ 178.97  inc. vat

£193.70save £14.73

£149.14 ex. vat

£161.41save £12.27
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QuickFind: 767602   |   Mfr part code: 220-G3-1000-X3

Evga Supernova 650 G3 Power Supply

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

£ 94.11  inc. vat

£78.42 ex. vat

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QuickFind: 768997   |   Mfr part code: 220-G3-0650-Y3

Corsair AXi 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

£ 201.33  inc. vat

£167.77 ex. vat

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QuickFind: 410035   |   Mfr part code: CP-9020037-UK

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)

£ 111.99  inc. vat

£93.32 ex. vat

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QuickFind: 715152   |   Mfr part code: CP-9020081-UK

Corsair RM1000i RMi Series 1000 Watt Fully Modular Power Supply Unit (80 Plus Gold Certified)

  • 80 PLUS Gold certified
  • Fully Modular
  • Corsair Link monitoring and control
  • Dimensions 470 x 405 x 165

£ 162.11  inc. vat

£135.09 ex. vat

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QuickFind: 715155   |   Mfr part code: CP-9020084-UK

Be Quiet Power Zone 850W Fully Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 70 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£ 125.99  inc. vat

£104.99 ex. vat

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QuickFind: 546367   |   Mfr part code: BN212

EVGA SuperNOVA 750 P2 Power Supply

  • Unbeatable 10 Year Warranty and unparalleled EVGA Customer Support...
  • Double Ball Bearing fan for exceptional reliability and quiet...
  • Total 750W @ +50C

£ 118.98  inc. vat

£99.15 ex. vat

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QuickFind: 718834   |   Mfr part code: 220-P2-0750-X3

Cooler Master Vanguard V850W 80+ Gold Fully Modular PSU

  • Single 12V Rail at 70A
  • 80 Plus Gold
  • Fully Modular Flat Black Cables
  • 135mm Silent Fan

£ 136.98  inc. vat

£114.15 ex. vat

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QuickFind: 514899   |   Mfr part code: RS850-AFBAG1-UK

Antec High Current Pro 1300W Fully Modular 80+ Platinum Power Supply

  • Black Coloured PSU with a 135mm Silent Cooling Fan
  • Equipped with a Quad 12v Rail Delivering upto 108.33 Amps
  • Equipped with 10 PCI-E Connectors for Graphics Cards

£ 278.99  inc. vat

£232.49 ex. vat

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QuickFind: 581000   |   Mfr part code: 0-761345-06261-9

Corsair HX850i 850 Watt Power Supply

  • 80 PLUS Platinum efficiency, delivering 92% energy efficiency at real...
  • 140mm thermally controlled fluid dynamic bearing fan spins up as...

£ 148.98  inc. vat

£124.15 ex. vat

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QuickFind: 659513   |   Mfr part code: CP-9020073-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.