PC Computer Power Supply Units (137 products)

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

Showing 97 - 120 of 137 results
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EVGA Supernova 1600W Fully Modular 80+ Gold Power Supply

  • 80 PLUS Gold certified
  • Fully Modular
  • Unbeatable 10 Year Warranty
  • Total 1600W

£ 330.99  inc. vat

£ 275.82 ex. vat

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Antec VP 400 PC EC

  • 400W Continuous Power
  • Up to 82% efficient
  • 120 mm Silence
  • Heavy-duty Caps

£ 36.48  inc. vat

£ 30.40 ex. vat

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EVGA SuperNOVA 650 P2 Power Supply

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

£ 125.99  inc. vat

£ 104.99 ex. vat

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EVGA SuperNOVA 850W G2 Fully Modular Power Supply

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

£ 142.72  inc. vat

£ 118.93 ex. vat

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EVGA SuperNOVA 1600 P2 Power Supply

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

£ 360.99  inc. vat

£ 300.82 ex. vat

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Thermaltake Smart DPS G Digital 450w Power Supply 80+ G

  • Smart Power Management
  • Ultra Quiet 120mm Fan
  • 80 Plus 230V Standard Certified
  • Multiple Connectors

£ 42.99  inc. vat

£ 35.82 ex. vat

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Evga Supernova 650 G3 Power Supply

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

£ 86.97  inc. vat

£ 72.47 ex. vat

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Antec NE550C GB 80+Bronze Certified PSU

  • 550W Continuous Power
  • 80 PLUS BRONZE certified
  • 3 year warranty
  • Whisper-quiet high-quality double ball bearing fan

£ 50.99  inc. vat

£ 42.49 ex. vat

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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

£ 99.46  inc. vat

£ 82.88 ex. vat

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Seasonic Focus Plus 550W Gold 80 Plus Full Modular PSU

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

£ 89.49  inc. vat

£ 74.57 ex. vat

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Coolermaster Masterwatt Lite V2 400w PSU

  • Advanced Circuit Design
  • Silent and Durable Fan
  • Green Power
  • Safety Guardian
  • 80 Plus Standard 230v PSU

£ 29.98  inc. vat

£ 24.98 ex. vat

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Cooler Master MasterWatt Lite 700 V2 PSU

  • Advanced Circuit Design
  • Silent and Durable Fan
  • Green Power
  • Safety Guardian
  • 80 Plus Standard 230V EU Certified

£ 50.01  inc. vat

£55.73save £5.72

£ 41.67 ex. vat

£46.44save £4.77
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Antec HCG 650W Gold Power Supply

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

£ 82.49  inc. vat

£ 68.74 ex. vat

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Corsair RMx Series RM650x 80 PLUS Gold Fully Modular ATX PSU

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

£ 96.46  inc. vat

£103.79save £7.33

£ 80.38 ex. vat

£86.49save £6.11
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Be Quiet! 400W System Power 9 PSU

  • Attained by using a high-quality fan
  • Advanced reliability for CPU and GPU
  • Equipped with a wealth of advanced technology
  • Attractive design for high performance, cost-effective systems...

£ 39.48  inc. vat

£ 32.90 ex. vat

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Thermaltake Smart BX1 RGB 750W PSU

  • Ultra-Quiet 120mm Hydraulic Bearing Fan
  • High Quality Japanese Main Capacitor
  • 80 PLUS Bronze Certified
  • RGB Lighting
  • 5 Year Warranty

£ 70.49  inc. vat

£ 58.74 ex. vat

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Kolink KL-400 400W 80 Plus Bronze Power Supply

  • Wattage: 400W
  • 80 Plus Bronze
  • Silent 12cm fan cooling
  • Intelligent temperature control
  • 2 Year Warranty

£ 30.99  inc. vat

£ 25.82 ex. vat

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Be Quiet! Pure Power 11 500w Power Supply

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

£ 59.91  inc. vat

£ 49.92 ex. vat

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Be Quiet! Pure Power 11 CM 500w Power Supply

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

£ 66.48  inc. vat

£ 55.40 ex. vat

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Be Quiet! SFX L Power 600W Fully Modular Power Supply

  • 80 PLUS Gold certification (up to 92% efficiency)
  • Multi-GPU support with four PCIe connectors
  • Full cable management for maximum build flexibility
  • Temperature-controlled 120mm high-quality fan

£ 101.99  inc. vat

£ 84.99 ex. vat

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Corsair Vengeance 750M Semi Modular 750W Power Supply

  • Semi-Modular Cables
  • 80 Plus Silver Certified
  • 100% Japanese Electrolytic Capacitors
  • +12V Multi-Rail Design
  • Five Year Warranty

£ 88.98  inc. vat

£ 74.15 ex. vat

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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

£ 136.49  inc. vat

£ 113.74 ex. vat

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Be Quiet TFX Power 2 300W Fully Wired 80+ Bronze Power Supply

  • Black Coloured PSU with a 80mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto Amps
  • Equipped with 8 PCI-E Connectors for Graphics Cards

£ 52.49  inc. vat

£ 43.74 ex. vat

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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

£ 61.72  inc. vat

£ 51.43 ex. vat

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EVGA Supernova 1600W Fully Modular 80+ Gold Power Supply

  • 80 PLUS Gold certified
  • Fully Modular
  • Unbeatable 10 Year Warranty
  • Total 1600W

QuickFind: 721557

Mfr part code: 120-G2-1600-X3

£ 330.99  inc. vat

£ 275.82 ex. vat

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Antec VP 400 PC EC

  • 400W Continuous Power
  • Up to 82% efficient
  • 120 mm Silence
  • Heavy-duty Caps

QuickFind: 722891

Mfr part code: 0-761345-06487-3

£ 36.48  inc. vat

£ 30.40 ex. vat

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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

£ 125.99  inc. vat

£ 104.99 ex. vat

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EVGA SuperNOVA 850W G2 Fully Modular Power Supply

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

QuickFind: 747637

Mfr part code: 220-G2-0850-X3

£ 142.72  inc. vat

£ 118.93 ex. vat

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EVGA SuperNOVA 1600 P2 Power Supply

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

QuickFind: 759091

Mfr part code: 220-P2-1600-X3

£ 360.99  inc. vat

£ 300.82 ex. vat

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Thermaltake Smart DPS G Digital 450w Power Supply 80+ G

  • Smart Power Management
  • Ultra Quiet 120mm Fan
  • 80 Plus 230V Standard Certified
  • Multiple Connectors

QuickFind: 766407

Mfr part code: PS-SPG-0450DPCWEU-2

£ 42.99  inc. vat

£ 35.82 ex. vat

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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

£ 86.97  inc. vat

£ 72.47 ex. vat

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Antec NE550C GB 80+Bronze Certified PSU

  • 550W Continuous Power
  • 80 PLUS BRONZE certified
  • 3 year warranty
  • Whisper-quiet high-quality double ball bearing fan

QuickFind: 789917

Mfr part code: 0-761345-05553-6

£ 50.99  inc. vat

£ 42.49 ex. vat

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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

£ 99.46  inc. vat

£ 82.88 ex. vat

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Seasonic Focus Plus 550W Gold 80 Plus Full Modular PSU

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

QuickFind: 817424

Mfr part code: SSR-550FX

£ 89.49  inc. vat

£ 74.57 ex. vat

More Info

Coolermaster Masterwatt Lite V2 400w PSU

  • Advanced Circuit Design
  • Silent and Durable Fan
  • Green Power
  • Safety Guardian
  • 80 Plus Standard 230v PSU

QuickFind: 828324

Mfr part code: MPX-4001-ACABW-KS

£ 29.98  inc. vat

£ 24.98 ex. vat

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Cooler Master MasterWatt Lite 700 V2 PSU

  • Advanced Circuit Design
  • Silent and Durable Fan
  • Green Power
  • Safety Guardian
  • 80 Plus Standard 230V EU Certified

QuickFind: 828327

Mfr part code: MPX-7001-ACABW-KS

£ 50.01  inc. vat

£55.73save £5.72

£ 41.67 ex. vat

£46.44save £4.77
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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

£ 82.49  inc. vat

£ 68.74 ex. vat

More Info

Corsair RMx Series RM650x 80 PLUS Gold Fully Modular ATX PSU

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

QuickFind: 856937

Mfr part code: CP-9020178-UK

£ 96.46  inc. vat

£103.79save £7.33

£ 80.38 ex. vat

£86.49save £6.11
More Info

Be Quiet! 400W System Power 9 PSU

  • Attained by using a high-quality fan
  • Advanced reliability for CPU and GPU
  • Equipped with a wealth of advanced technology
  • Attractive design for high performance, cost-effective systems...

QuickFind: 859737

Mfr part code: BN245

£ 39.48  inc. vat

£ 32.90 ex. vat

More Info

Thermaltake Smart BX1 RGB 750W PSU

  • Ultra-Quiet 120mm Hydraulic Bearing Fan
  • High Quality Japanese Main Capacitor
  • 80 PLUS Bronze Certified
  • RGB Lighting
  • 5 Year Warranty

QuickFind: 861344

Mfr part code: PS-SPR-0750NHSABK-1

£ 70.49  inc. vat

£ 58.74 ex. vat

More Info

Kolink KL-400 400W 80 Plus Bronze Power Supply

  • Wattage: 400W
  • 80 Plus Bronze
  • Silent 12cm fan cooling
  • Intelligent temperature control
  • 2 Year Warranty

QuickFind: 864701

Mfr part code: KL-400

£ 30.99  inc. vat

£ 25.82 ex. vat

More Info

Be Quiet! Pure Power 11 500w Power Supply

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

QuickFind: 865167

Mfr part code: BN293

£ 59.91  inc. vat

£ 49.92 ex. vat

More Info

Be Quiet! Pure Power 11 CM 500w Power Supply

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

QuickFind: 865171

Mfr part code: BN297

£ 66.48  inc. vat

£ 55.40 ex. vat

More Info

Be Quiet! SFX L Power 600W Fully Modular Power Supply

  • 80 PLUS Gold certification (up to 92% efficiency)
  • Multi-GPU support with four PCIe connectors
  • Full cable management for maximum build flexibility
  • Temperature-controlled 120mm high-quality fan

QuickFind: 879264

Mfr part code: BN239

£ 101.99  inc. vat

£ 84.99 ex. vat

More Info

Corsair Vengeance 750M Semi Modular 750W Power Supply

  • Semi-Modular Cables
  • 80 Plus Silver Certified
  • 100% Japanese Electrolytic Capacitors
  • +12V Multi-Rail Design
  • Five Year Warranty

QuickFind: 882007

Mfr part code: CP-9020176-UK

£ 88.98  inc. vat

£ 74.15 ex. vat

More Info

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

QuickFind: 546368

Mfr part code: BN213

£ 136.49  inc. vat

£ 113.74 ex. vat

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Be Quiet TFX Power 2 300W Fully Wired 80+ Bronze Power Supply

  • Black Coloured PSU with a 80mm Silent Cooling Fan
  • Equipped with a Dual 12v Rail Delivering upto Amps
  • Equipped with 8 PCI-E Connectors for Graphics Cards

QuickFind: 620502

Mfr part code: BN228

£ 52.49  inc. vat

£ 43.74 ex. vat

More Info

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

QuickFind: 631115

Mfr part code: SPS-730MPCBEU

£ 61.72  inc. vat

£ 51.43 ex. vat

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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.

Learn more

The best PSUs for gaming