PC Computer Power Supply Units (35)

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 about PC Computer Power Supply Units

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2 pages
Free Delivery* Evga Supernova 650 G3 Power Supply

Evga Supernova 650 G3 Power Supply

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

£ 87.65  inc. vat

£ 73.04 ex. vat

More Info
Free Delivery* EVGA 650w B3 PSU 80+ Bronze Fully Modular Power Supply

EVGA 650w B3 PSU 80+ Bronze Fully Modular Power Supply

  • 3x Molex Connectors
  • 6x SATA Connectors
  • 3x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

£ 70.94  inc. vat

£ 59.11 ex. vat

More Info
Free Delivery* Be Quiet! Pure Power 11 CM 600w Power Supply

Be Quiet! Pure Power 11 CM 600w Power Supply

  • 80 Plus Gold
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Modular cable management
  • 5 Year Warranty

£ 78.81  inc. vat

£89.79save £10.98

£ 65.67 ex. vat

£74.82save £9.15
More Info
Free Delivery* Corsair CXM 750W Semi Modular 80+ Bronze Power Supply

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

£ 88.18  inc. vat

£ 73.48 ex. vat

More Info
Free Delivery* Corsair 650W TX650M Gold Hybid Modular Power Supply/PSU

Corsair 650W TX650M Gold Hybid Modular Power Supply/PSU

  • 650W Corsair TX-M Series TX650M PSU
  • 80PLUS Gold
  • Hybrid Modular
  • Single Rail
  • 51A + 12V, 120mm Fan

£ 77.48  inc. vat

£ 64.56 ex. vat

More Info
Free Delivery* Antec 650W EA650G PRO EarthWatts Gold Pro PSU

Antec 650W EA650G PRO EarthWatts Gold Pro PSU

  • 650 W
  • 80 Plus Gold Certified
  • Hybrid Modular Cable Management
  • Whisper-quiet, high-quality fan
  • 7 Year Warranty

£ 75.39  inc. vat

£81.23save £5.84

£ 62.82 ex. vat

£67.69save £4.87
More Info
Free Delivery* EVGA SuperNOVA 550 G2 Power Supply

EVGA SuperNOVA 550 G2 Power Supply

  • Unbeatable 7 Year Warranty and unparalleled EVGA Customer Support...
  • Ultra Quiet Fan with ECO Intelligent Thermal Control Fan system...
  • Total 550W @ +50C

£ 81.48  inc. vat

£85.73save £4.25

£ 67.90 ex. vat

£71.44save £3.54
More Info
Free Delivery* Corsair SF Series 600 Watt 80 PLUS Gold Certified High Performance SFX PSU

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

£ 97.96  inc. vat

£ 81.63 ex. vat

More Info
Free Delivery* Riotoro Enigma G2 750W ATX Power Supply

Riotoro Enigma G2 750W ATX Power Supply

  • 80 Plus Gold Certified
  • Fully Modular
  • 100% Japanese Capacitors
  • Hybrid Silent Fan Control
  • 7 Year Warranty

£ 83.98  inc. vat

£ 69.98 ex. vat

More Info
Free Delivery* Seasonic Focus Plus 650W Gold 80 Plus Full Modular PSU

Seasonic Focus Plus 650W Gold 80 Plus Full Modular PSU

  • ATX 12 V
  • Fully Modular
  • 80 Plus Gold
  • Fluid Dynamic Fan Bearing
  • 10 Year Warranty

£ 92.68  inc. vat

£ 77.23 ex. vat

More Info
Free Delivery* Straight Power 11 550w - 80plus Gold Power Supply

Straight Power 11 550w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency
  • Powerful multi-GPU support
  • Japanese capacitors ensure reliability
  • 5-year manufacturer’s warranty

£ 86.99  inc. vat

£ 72.49 ex. vat

More Info
Free Delivery* EVGA SuperNOVA 650w PSU

EVGA SuperNOVA 650w PSU

  • 5 Year Warranty
  • 80PLUS Gold Certificate, with up to 90% efficiency
  • Highest quality Japanese Capacitors
  • Fully Modular to reduce clutter and improve airflow

£ 89.31  inc. vat

£ 74.42 ex. vat

More Info
Free Delivery* Corsair CX850M Semi Modular 80 Plus Bronze Power Supply

Corsair CX850M Semi Modular 80 Plus Bronze Power Supply

  • Up to 85% energy efficiency means less heat generation and lower energy...
  • 0.99 Active Power Factor Correction provides clean and reliable power...
  • Universal AC input from 90-264V

£ 99.20  inc. vat

£ 82.66 ex. vat

More Info
Free Delivery* 550w G3 80+ Modular Gold

550w G3 80+ Modular Gold

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

£ 84.48  inc. vat

£ 70.40 ex. vat

More Info
Free Delivery* EVGA 750 B3 750W Modular 80+ Bronze PSU

EVGA 750 B3 750W Modular 80+ Bronze PSU

  • 3x Molex Connectors
  • 6x SATA Connectors
  • 4x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

£ 74.99  inc. vat

£ 62.49 ex. vat

More Info
Free Delivery* Straight Power 11 650w - 80plus Gold Power Supply

Straight Power 11 650w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency (up to 93%)
  • Powerful multi-GPU support
  • Japanese 105°C-rated capacitors ensure stability and reliability...

£ 93.77  inc. vat

£99.48save £5.71

£ 78.14 ex. vat

£82.90save £4.76
More Info
Free Delivery* Corsair RMx Series RM550x 80 PLUS Gold Fully Modular ATX PSU

Corsair RMx Series RM550x 80 PLUS Gold Fully Modular ATX PSU

  • 80 Plus Gold
  • Low Noise Operation
  • Fully Modular
  • 100% All Japanese 105c Capacitors
  • 10 Year Warranty

£ 78.59  inc. vat

£88.49save £9.90

£ 65.49 ex. vat

£73.74save £8.25
More Info
Free Delivery* Be Quiet! Pure Power 11 700w Power Supply

Be Quiet! Pure Power 11 700w Power Supply

  • 80 Plus Gold
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Attractively Sleeved Cables
  • 5 Year Warranty

£ 79.97  inc. vat

£ 66.64 ex. vat

More Info
Free Delivery* Be Quiet! Pure Power 11 CM 700w Power Supply

Be Quiet! Pure Power 11 CM 700w Power Supply

  • 80 Plus Gold
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Modular cable management
  • 5 Year Warranty

£ 86.98  inc. vat

£ 72.48 ex. vat

More Info
Free Delivery* EVGA SuperNOVA 650 P2 Power Supply

EVGA SuperNOVA 650 P2 Power Supply

  • 80 PLUS Platinum certified
  • Fully Modular
  • NVIDIA SLI & AMD Crossfire Ready
  • Unbeatable 10 Year Warranty

£ 99.98  inc. vat

£123.41save £23.43

£ 83.31 ex. vat

£102.84save £19.53
More Info
Free Delivery* Corsair CX650M Semi-Modular ATX Power Supply

Corsair CX650M Semi-Modular ATX Power Supply

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

£ 77.15  inc. vat

£81.50save £4.35

£ 64.29 ex. vat

£67.91save £3.62
More Info
Free Delivery* EVGA 850 B3 850W Modular 80+ Bronze PSU

EVGA 850 B3 850W Modular 80+ Bronze PSU

  • 3x Molex Connectors
  • 9x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

£ 81.99  inc. vat

£92.98save £10.99

£ 68.32 ex. vat

£77.48save £9.16
More Info
Free Delivery* Riotoro Enigma G2 850W ATX Power Supply

Riotoro Enigma G2 850W ATX Power Supply

  • 80 Plus Gold Certified
  • Fully Modular
  • 100% Japanese Capacitors
  • Hybrid Silent Fan Control
  • 7 Year Warranty

£ 91.16  inc. vat

£97.98save £6.82

£ 75.96 ex. vat

£81.65save £5.69
More Info
Free Delivery* Antec HCG 650W Gold Power Supply

Antec HCG 650W Gold Power Supply

  • 120mm FDB Fan
  • Zero RPM Mode
  • 650W
  • 100% Modular
  • PhaseWave design

£ 89.99  inc. vat

£ 74.99 ex. vat

More Info

Evga Supernova 650 G3 Power Supply

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

QuickFind: 768997

Mfr part code: 220-G3-0650-Y3

Free Delivery*

£ 87.65  inc. vat

£ 73.04 ex. vat

More Info

EVGA 650w B3 PSU 80+ Bronze Fully Modular Power Supply

  • 3x Molex Connectors
  • 6x SATA Connectors
  • 3x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 791242

Mfr part code: 220-B3-0650-V3

Free Delivery*

£ 70.94  inc. vat

£ 59.11 ex. vat

More Info

Be Quiet! Pure Power 11 CM 600w Power Supply

  • 80 Plus Gold
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Modular cable management
  • 5 Year Warranty

QuickFind: 865172

Mfr part code: BN298

Free Delivery*

£ 78.81  inc. vat

£89.79save £10.98

£ 65.67 ex. vat

£74.82save £9.15
More Info

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

QuickFind: 429987

Mfr part code: CP-9020061-UK

Free Delivery*

£ 88.18  inc. vat

£ 73.48 ex. vat

More Info

Corsair 650W TX650M Gold Hybid Modular Power Supply/PSU

  • 650W Corsair TX-M Series TX650M PSU
  • 80PLUS Gold
  • Hybrid Modular
  • Single Rail
  • 51A + 12V, 120mm Fan

QuickFind: 782057

Mfr part code: CP-9020132-UK

Free Delivery*

£ 77.48  inc. vat

£ 64.56 ex. vat

More Info

Antec 650W EA650G PRO EarthWatts Gold Pro PSU

  • 650 W
  • 80 Plus Gold Certified
  • Hybrid Modular Cable Management
  • Whisper-quiet, high-quality fan
  • 7 Year Warranty

QuickFind: 810564

Mfr part code: 0-761345-11619-0

Free Delivery*

£ 75.39  inc. vat

£81.23save £5.84

£ 62.82 ex. vat

£67.69save £4.87
More Info

EVGA SuperNOVA 550 G2 Power Supply

  • Unbeatable 7 Year Warranty and unparalleled EVGA Customer Support...
  • Ultra Quiet Fan with ECO Intelligent Thermal Control Fan system...
  • Total 550W @ +50C

QuickFind: 718835

Mfr part code: 220-G2-0550-Y3

Free Delivery*

£ 81.48  inc. vat

£85.73save £4.25

£ 67.90 ex. vat

£71.44save £3.54
More Info

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

QuickFind: 745622

Mfr part code: CP-9020105-UK

Free Delivery*

£ 97.96  inc. vat

£ 81.63 ex. vat

More Info

Riotoro Enigma G2 750W ATX Power Supply

  • 80 Plus Gold Certified
  • Fully Modular
  • 100% Japanese Capacitors
  • Hybrid Silent Fan Control
  • 7 Year Warranty

QuickFind: 809568

Mfr part code: PR-GP0750-FMG2-UK

Free Delivery*

£ 83.98  inc. vat

£ 69.98 ex. vat

More Info

Seasonic Focus Plus 650W Gold 80 Plus Full Modular PSU

  • ATX 12 V
  • Fully Modular
  • 80 Plus Gold
  • Fluid Dynamic Fan Bearing
  • 10 Year Warranty

QuickFind: 817425

Mfr part code: SSR-650FX

Free Delivery*

£ 92.68  inc. vat

£ 77.23 ex. vat

More Info

Straight Power 11 550w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency
  • Powerful multi-GPU support
  • Japanese capacitors ensure reliability
  • 5-year manufacturer’s warranty

QuickFind: 826245

Mfr part code: BN281

Free Delivery*

£ 86.99  inc. vat

£ 72.49 ex. vat

More Info

EVGA SuperNOVA 650w PSU

  • 5 Year Warranty
  • 80PLUS Gold Certificate, with up to 90% efficiency
  • Highest quality Japanese Capacitors
  • Fully Modular to reduce clutter and improve airflow

QuickFind: 830658

Mfr part code: 120-GP-0650-X3

Free Delivery*

£ 89.31  inc. vat

£ 74.42 ex. vat

More Info

Corsair CX850M Semi Modular 80 Plus Bronze Power Supply

  • Up to 85% energy efficiency means less heat generation and lower energy...
  • 0.99 Active Power Factor Correction provides clean and reliable power...
  • Universal AC input from 90-264V

QuickFind: 669243

Mfr part code: CP-9020099-UK

Free Delivery*

£ 99.20  inc. vat

£ 82.66 ex. vat

More Info

550w G3 80+ Modular Gold

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

QuickFind: 769400

Mfr part code: 220-G3-0550-Y3

Free Delivery*

£ 84.48  inc. vat

£ 70.40 ex. vat

More Info

EVGA 750 B3 750W Modular 80+ Bronze PSU

  • 3x Molex Connectors
  • 6x SATA Connectors
  • 4x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 791243

Mfr part code: 220-B3-0750-V3

Free Delivery*

£ 74.99  inc. vat

£ 62.49 ex. vat

More Info

Straight Power 11 650w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency (up to 93%)
  • Powerful multi-GPU support
  • Japanese 105°C-rated capacitors ensure stability and reliability...

QuickFind: 826246

Mfr part code: BN282

Free Delivery*

£ 93.77  inc. vat

£99.48save £5.71

£ 78.14 ex. vat

£82.90save £4.76
More Info

Corsair RMx Series RM550x 80 PLUS Gold Fully Modular ATX PSU

  • 80 Plus Gold
  • Low Noise Operation
  • Fully Modular
  • 100% All Japanese 105c Capacitors
  • 10 Year Warranty

QuickFind: 856936

Mfr part code: CP-9020177-UK

Free Delivery*

£ 78.59  inc. vat

£88.49save £9.90

£ 65.49 ex. vat

£73.74save £8.25
More Info

Be Quiet! Pure Power 11 700w Power Supply

  • 80 Plus Gold
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Attractively Sleeved Cables
  • 5 Year Warranty

QuickFind: 865169

Mfr part code: BN295

Free Delivery*

£ 79.97  inc. vat

£ 66.64 ex. vat

More Info

Be Quiet! Pure Power 11 CM 700w Power Supply

  • 80 Plus Gold
  • Exceptionally Quiet Operation
  • Silence-Optimized 120mm Be Quiet! Fan
  • Modular cable management
  • 5 Year Warranty

QuickFind: 865173

Mfr part code: BN299

Free Delivery*

£ 86.98  inc. vat

£ 72.48 ex. vat

More Info

EVGA SuperNOVA 650 P2 Power Supply

  • 80 PLUS Platinum certified
  • Fully Modular
  • NVIDIA SLI & AMD Crossfire Ready
  • Unbeatable 10 Year Warranty

QuickFind: 725417

Mfr part code: 220-P2-0650-X3

Free Delivery*

£ 99.98  inc. vat

£123.41save £23.43

£ 83.31 ex. vat

£102.84save £19.53
More Info

Corsair CX650M Semi-Modular ATX Power Supply

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

QuickFind: 743021

Mfr part code: CP-9020103-UK

Free Delivery*

£ 77.15  inc. vat

£81.50save £4.35

£ 64.29 ex. vat

£67.91save £3.62
More Info

EVGA 850 B3 850W Modular 80+ Bronze PSU

  • 3x Molex Connectors
  • 9x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 791244

Mfr part code: 220-B3-0850-V3

Free Delivery*

£ 81.99  inc. vat

£92.98save £10.99

£ 68.32 ex. vat

£77.48save £9.16
More Info

Riotoro Enigma G2 850W ATX Power Supply

  • 80 Plus Gold Certified
  • Fully Modular
  • 100% Japanese Capacitors
  • Hybrid Silent Fan Control
  • 7 Year Warranty

QuickFind: 809567

Mfr part code: PR-GP0850-FMG2-UK

Free Delivery*

£ 91.16  inc. vat

£97.98save £6.82

£ 75.96 ex. vat

£81.65save £5.69
More Info

Antec HCG 650W Gold Power Supply

  • 120mm FDB Fan
  • Zero RPM Mode
  • 650W
  • 100% Modular
  • PhaseWave design

QuickFind: 830327

Mfr part code: 0-761345-11631-2

Free Delivery*

£ 89.99  inc. vat

£ 74.99 ex. vat

More Info
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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.