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 44 PC Computer Power Supply Units

Corsair CX Series CX450M 450W 80 Plus Bronze Certified Modular ATX PSU

  • 80 Plus Bronze
  • Semi Modular PSU
  • Sleeved cables Low-Profile All Black
  • Supports ATX12V 2.3/2.2/2.01 and EPS12V 2.91 standards

£47.57 inc. vat

£51.82save £4.25

£39.64 ex. vat

£43.18save £3.54
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QuickFind: 745621   |   Mfr part code: CP-9020101-UK

Corsair CSM 650W Semi Modular 80+ Gold Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 62 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£72.89 inc. vat

£79.98save £7.09

£60.74 ex. vat

£66.65save £5.91
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QuickFind: 584216   |   Mfr part code: CP-9020077-UK

EVGA 650 GQ Modular Gold Rated 80+ Power Supply

  • 80 PLUS Gold certified
  • NVIDIA SLI & AMD Crossfire Ready
  • Modular Design to reduce clutter and improve airflow

£74.58 inc. vat

£62.15 ex. vat

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QuickFind: 730191   |   Mfr part code: 210-GQ-0650-V3

EVGA 1000 GQ Modular Gold Rated 80+ Power Supply

  • 80 PLUS Gold certified
  • NVIDIA SLI & AMD Crossfire Ready
  • Modular Design to reduce clutter and improve airflow

£166.59 inc. vat

£138.82 ex. vat

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QuickFind: 730233   |   Mfr part code: 210-GQ-1000-V3

Corsair CX550M Semi-Modular ATX Power Supply

  • 80 PLUS Bronze certified
  • Modular cable management Semi-Modular
  • 120mm thermally controlled fan
  • Five year warranty

£60.15 inc. vat

£50.12 ex. vat

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QuickFind: 743020   |   Mfr part code: CP-9020102-UK

Corsair CXM 750W Semi Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 62 Amps
  • Equipped with 2 PCI-E Connectors for Graphics Cards

£82.98 inc. vat

£69.15 ex. vat

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QuickFind: 429987   |   Mfr part code: CP-9020061-UK

CX Series CX450M 450 Watt 80 PLUS

  • Low noise 80 PLUS Bronze certified efficiency
  • Reliable and compatible
  • Matte black finish, black-sleeved cables and black connectors...

£42.51 inc. vat

£48.27save £5.76

£35.42 ex. vat

£40.22save £4.80
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QuickFind: 781898   |   Mfr part code: CP-9020120-UK

Corsair TX550M 550W 80 Plus Gold Power Supply

  • 550W Corsair TX-M Series TX550M PSU
  • 80PLUS Gold
  • Hybrid Modular, Single Rail
  • 43A + 12V, 120mm Fan
  • ATX PSU

£64.30 inc. vat

£72.99save £8.69

£53.58 ex. vat

£60.82save £7.24
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QuickFind: 782056   |   Mfr part code: CP-9020133-UK

Corsair CSM 550W Semi Modular 80+ Gold Power Supply

  • Black Coloured PSU with a 120mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 51 Amps
  • Equipped with a single 6+2 pin PCI-E Connector for Graphics Cards...

£66.99 inc. vat

£74.98save £7.99

£55.82 ex. vat

£62.48save £6.66
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QuickFind: 584214   |   Mfr part code: CP-9020076-UK

EVGA 500 BQ Power Supply

  • 80 PLUS Bronze
  • Hybrid Modular
  • SLI/CrossFire Ready
  • Single Rail
  • 3 Year Warranty

£49.94 inc. vat

£41.61 ex. vat

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QuickFind: 768921   |   Mfr part code: 110-BQ-0500-K3

Pure Power 10 300W 80 Plus Bronze Power Supply

  • Exceptionally quiet
  • 300 Watts of continuous power
  • 80PLUS Bronze certification
  • Sleeved cable lengths

£43.96 inc. vat

£36.63 ex. vat

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QuickFind: 779004   |   Mfr part code: BN270

PowerCool 750W Semi Modular Power Supply

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 54 Amps
  • Equipped with 2 PCI-E Connectors for Graphics Cards

£44.94 inc. vat

£47.99save £3.05

£37.45 ex. vat

£39.99save £2.54
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QuickFind: 191850   |   Mfr part code: PSUPC750AUBAM

Corsair HX1200i High Performance Series (1200 Watt) 80 Plus Platinum ATX Power Supply Unit

  • HXi Series HX1200i High-Performance ATX Power Supply
  • 1200 Watt 80 Plus Platinum Certified PSU
  • Zero RPM Fan Mode

£226.98 inc. vat

£189.15 ex. vat

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QuickFind: 700189   |   Mfr part code: CP-9020070-UK

PowerCool 850W Semi Modular Power Supply

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 52 Amps
  • Equipped with 2 PCI-E Connectors for Graphics Cards

£61.97 inc. vat

£51.64 ex. vat

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QuickFind: 191851   |   Mfr part code: PSUPC850AUBAM

Thermaltake Smart SE 730W Semi Modular 80+ Bronze Power Supply

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 57 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£65.51 inc. vat

£54.59 ex. vat

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QuickFind: 631115   |   Mfr part code: SPS-730MPCBEU

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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.