PC Computer Power Supply Units (160)

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

Grid List

TR2 S Series 600W Power Supply 80 Plus Certified Active

  • Ultra Quiet 120mm Fan
  • Multiple Connectors
  • 80 PLUS 230V Standard Certified
  • Haswell Ready
  • High-Quality Components

£ 36.86  inc. vat

£49.98save £13.12

£ 30.71 ex. vat

£41.65save £10.94
More Info

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

£33.84save £3.86

£ 24.98 ex. vat

£28.20save £3.22
More Info
Free Delivery Corsair RMx Series RM650x 80 PLUS Gold Fully Modular ATX PSU

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

£ 87.81  inc. vat

£96.93save £9.12

£ 73.17 ex. vat

£80.77save £7.60
More Info
Free Delivery EVGA Supernova 750W Fully Modular 80+ Gold Power Supply

EVGA Supernova 750W Fully Modular 80+ Gold Power Supply

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 62.4 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards

£ 106.74  inc. vat

£112.97save £6.23

£ 88.95 ex. vat

£94.14save £5.19
More Info

EVGA 450 B3 450W Modular 80+ Bronze PSU

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

£ 48.95  inc. vat

£54.76save £5.81

£ 40.79 ex. vat

£45.63save £4.84
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

£ 75.96  inc. vat

£79.96save £4.00

£ 63.30 ex. vat

£66.63save £3.33
More Info
Free Delivery Corsair CX550M Semi-Modular ATX Power Supply

Corsair CX550M Semi-Modular ATX Power Supply

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

£ 57.98  inc. vat

£ 48.31 ex. vat

More Info
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

£ 89.86  inc. vat

£ 74.88 ex. vat

More Info
Free Delivery EVGA 750w G3 80+ Modular Gold

EVGA 750w G3 80+ Modular Gold

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

£ 114.98  inc. vat

£ 95.81 ex. vat

More Info
Free Delivery Corsair 650W CX650 Bronze ATX Power Supply/PSU

Corsair 650W CX650 Bronze ATX Power Supply/PSU

  • 650W Corsair CX Series CX650
  • 80PLUS Bronze
  • Fully Wired
  • Single Rail
  • 54A +12V, 120mm Fan

£ 58.72  inc. vat

£64.48save £5.76

£ 48.93 ex. vat

£53.73save £4.80
More Info
Free Delivery Thermaltake Smart SE 730W Semi Modular 80+ Bronze Power Supply

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

£ 56.54  inc. vat

£63.74save £7.20

£ 47.11 ex. vat

£53.11save £6.00
More Info
Free Delivery Corsair HX1000i High Performance Series (1000 Watt) 80 Plus Platinum Atx Power Supply Unit

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

£ 149.99  inc. vat

£189.15save £39.16

£ 124.99 ex. vat

£157.62save £32.63
More Info

EVGA 600W White Series 80+ Power Supply

  • 80 Plus Effieciency
  • 1x 120mm Fan
  • Quiet and Intelligent Auto Fan for near-silent operation
  • Dimensions 150 x 85 x 140 mm (WxHxD)

£ 42.48  inc. vat

£60.94save £18.46

£ 35.40 ex. vat

£50.78save £15.38
More Info
Free Delivery EVGA 750 BQ Power Supply

EVGA 750 BQ Power Supply

  • Quiet and Intelligent Auto Fan for near-silent operation
  • Fan Size / Bearing 140mm Teflon Nano-Steel Bearing
  • 5 Year Warranty

£ 70.49  inc. vat

£ 58.74 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

£ 79.98  inc. vat

£91.67save £11.69

£ 66.65 ex. vat

£76.39save £9.74
More Info
Free Delivery Corsair RM1000x High Performance Power Supply

Corsair RM1000x High Performance Power Supply

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

£ 129.98  inc. vat

£143.62save £13.64

£ 108.31 ex. vat

£119.68save £11.37
More Info
Free Delivery EVGA 650W G2 Fully Modular 80+ PSU

EVGA 650W G2 Fully Modular 80+ PSU

  • Single +12V Rail
  • LLC Resonant Circuit layout
  • Fully Modular
  • Double Ball Bearing Fan
  • Gold Rated Efficiency

£ 94.98  inc. vat

£104.19save £9.21

£ 79.15 ex. vat

£86.82save £7.67
More Info
Free Delivery be quiet! 600W Pure Power 10 CM Semi Modular PSU

be quiet! 600W Pure Power 10 CM Semi Modular PSU

  • Exceptionally quiet
  • 80PLUS® Silver certification
  • Easy-to-use flat drives and PCIe cables
  • Two 12V-rails and up to four PCI-express connectors

£ 72.51  inc. vat

£78.48save £5.97

£ 60.42 ex. vat

£65.40save £4.98
More Info

Riotoro Builder Edition - PSU 500W +80 White UK Version

  • 80 Plus White Certified
  • Flat Cables Reduce Clutter & Airflow
  • Quiet Fan Control
  • 3 Year Warranty

£ 36.89  inc. vat

£ 30.74 ex. vat

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

£ 81.99  inc. vat

£ 68.32 ex. vat

More Info
Free Delivery Corsair RM850i RMi Series 850 Watt Fully Modular Power Supply Unit (80 Plus Gold Certified)

Corsair RM850i RMi Series 850 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 (mm)

£ 129.98  inc. vat

£147.50save £17.52

£ 108.31 ex. vat

£122.91save £14.60
More Info

Corsair VS Series 350 Watt Power Supply

  • A dedicated single +12V rail offers maximum
  • Conforms to ATX12V v2.31 standard,
  • AC input from 200~240VAV

£ 32.60  inc. vat

£35.69save £3.09

£ 27.16 ex. vat

£29.74save £2.58
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

£ 66.99  inc. vat

£76.98save £9.99

£ 55.82 ex. vat

£64.15save £8.33
More Info

Be Quiet SFX 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 1 PCI-E Connectors for Graphics Cards

£ 49.28  inc. vat

£ 41.06 ex. vat

More Info

TR2 S Series 600W Power Supply 80 Plus Certified Active

  • Ultra Quiet 120mm Fan
  • Multiple Connectors
  • 80 PLUS 230V Standard Certified
  • Haswell Ready
  • High-Quality Components

£ 36.86  inc. vat

£49.98save £13.12

£ 30.71 ex. vat

£41.65save £10.94
View Product
More Info

QuickFind: 774819   |   Mfr part code: TRS-0600P-2

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

£33.84save £3.86

£ 24.98 ex. vat

£28.20save £3.22
View Product
More Info

QuickFind: 828324   |   Mfr part code: MPX-4001-ACABW-KS

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
Free Delivery

£ 87.81  inc. vat

£96.93save £9.12

£ 73.17 ex. vat

£80.77save £7.60
View Product
More Info

QuickFind: 856937   |   Mfr part code: CP-9020178-UK

EVGA Supernova 750W Fully Modular 80+ Gold Power Supply

  • Black Coloured PSU with a 140mm Silent Cooling Fan
  • Equipped with a Single 12v Rail Delivering upto 62.4 Amps
  • Equipped with 4 PCI-E Connectors for Graphics Cards
Free Delivery

£ 106.74  inc. vat

£112.97save £6.23

£ 88.95 ex. vat

£94.14save £5.19
View Product
More Info

QuickFind: 630112   |   Mfr part code: 220-G2-0750-X3

EVGA 450 B3 450W Modular 80+ Bronze PSU

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

£ 48.95  inc. vat

£54.76save £5.81

£ 40.79 ex. vat

£45.63save £4.84
View Product
More Info

QuickFind: 791238   |   Mfr part code: 220-B3-0450-V3

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
Free Delivery

£ 75.96  inc. vat

£79.96save £4.00

£ 63.30 ex. vat

£66.63save £3.33
View Product
More Info

QuickFind: 791243   |   Mfr part code: 220-B3-0750-V3

Corsair CX550M Semi-Modular ATX Power Supply

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

£ 57.98  inc. vat

£ 48.31 ex. vat

View Product
More Info

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

Evga Supernova 650 G3 Power Supply

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

£ 89.86  inc. vat

£ 74.88 ex. vat

View Product
More Info

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

EVGA 750w G3 80+ Modular Gold

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

£ 114.98  inc. vat

£ 95.81 ex. vat

View Product
More Info

QuickFind: 767601   |   Mfr part code: 220-G3-0750-X3

Corsair 650W CX650 Bronze ATX Power Supply/PSU

  • 650W Corsair CX Series CX650
  • 80PLUS Bronze
  • Fully Wired
  • Single Rail
  • 54A +12V, 120mm Fan
Free Delivery

£ 58.72  inc. vat

£64.48save £5.76

£ 48.93 ex. vat

£53.73save £4.80
View Product
More Info

QuickFind: 782054   |   Mfr part code: CP-9020122-UK

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
Free Delivery

£ 56.54  inc. vat

£63.74save £7.20

£ 47.11 ex. vat

£53.11save £6.00
View Product
More Info

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

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
Free Delivery

£ 149.99  inc. vat

£189.15save £39.16

£ 124.99 ex. vat

£157.62save £32.63
View Product
More Info

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

EVGA 600W White Series 80+ Power Supply

  • 80 Plus Effieciency
  • 1x 120mm Fan
  • Quiet and Intelligent Auto Fan for near-silent operation
  • Dimensions 150 x 85 x 140 mm (WxHxD)

£ 42.48  inc. vat

£60.94save £18.46

£ 35.40 ex. vat

£50.78save £15.38
View Product
More Info

QuickFind: 716703   |   Mfr part code: 100-W1-0600-K3

EVGA 750 BQ Power Supply

  • Quiet and Intelligent Auto Fan for near-silent operation
  • Fan Size / Bearing 140mm Teflon Nano-Steel Bearing
  • 5 Year Warranty
Free Delivery

£ 70.49  inc. vat

£ 58.74 ex. vat

View Product
More Info

QuickFind: 756500   |   Mfr part code: 110-BQ-0750-V3

550w G3 80+ Modular Gold

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

£ 79.98  inc. vat

£91.67save £11.69

£ 66.65 ex. vat

£76.39save £9.74
View Product
More Info

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

Corsair RM1000x High Performance Power Supply

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

£ 129.98  inc. vat

£143.62save £13.64

£ 108.31 ex. vat

£119.68save £11.37
View Product
More Info

QuickFind: 724685   |   Mfr part code: CP-9020094-UK

EVGA 650W G2 Fully Modular 80+ PSU

  • Single +12V Rail
  • LLC Resonant Circuit layout
  • Fully Modular
  • Double Ball Bearing Fan
  • Gold Rated Efficiency
Free Delivery

£ 94.98  inc. vat

£104.19save £9.21

£ 79.15 ex. vat

£86.82save £7.67
View Product
More Info

QuickFind: 716706   |   Mfr part code: 220-G2-0650-Y3

be quiet! 600W Pure Power 10 CM Semi Modular PSU

  • Exceptionally quiet
  • 80PLUS® Silver certification
  • Easy-to-use flat drives and PCIe cables
  • Two 12V-rails and up to four PCI-express connectors
Free Delivery

£ 72.51  inc. vat

£78.48save £5.97

£ 60.42 ex. vat

£65.40save £4.98
View Product
More Info

QuickFind: 779013   |   Mfr part code: BN278

Riotoro Builder Edition - PSU 500W +80 White UK Version

  • 80 Plus White Certified
  • Flat Cables Reduce Clutter & Airflow
  • Quiet Fan Control
  • 3 Year Warranty

£ 36.89  inc. vat

£ 30.74 ex. vat

View Product
More Info

QuickFind: 809570   |   Mfr part code: PR-BFX500-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
Free Delivery

£ 81.99  inc. vat

£ 68.32 ex. vat

View Product
More Info

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

Corsair RM850i RMi Series 850 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 (mm)
Free Delivery

£ 129.98  inc. vat

£147.50save £17.52

£ 108.31 ex. vat

£122.91save £14.60
View Product
More Info

QuickFind: 715154   |   Mfr part code: CP-9020083-UK

Corsair VS Series 350 Watt Power Supply

  • A dedicated single +12V rail offers maximum
  • Conforms to ATX12V v2.31 standard,
  • AC input from 200~240VAV

£ 32.60  inc. vat

£35.69save £3.09

£ 27.16 ex. vat

£29.74save £2.58
View Product
More Info

QuickFind: 726364   |   Mfr part code: CP-9020095-UK

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
Free Delivery

£ 66.99  inc. vat

£76.98save £9.99

£ 55.82 ex. vat

£64.15save £8.33
View Product
More Info

QuickFind: 791242   |   Mfr part code: 220-B3-0650-V3

Be Quiet SFX 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 1 PCI-E Connectors for Graphics Cards

£ 49.28  inc. vat

£ 41.06 ex. vat

View Product
More Info

QuickFind: 620499   |   Mfr part code: BN226

Grid List

Return to top

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.