PC Computer Power Supply Units (171)

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
8 pages

EVGA BR 450W 80+ Bronze Power Supply

  • Quiet and Intelligent Auto Fan
  • 80 PLUS Bronze certified
  • 3 Year Warranty
  • Hard Lined Design
  • Long Sleeve Bearing Fan

£ 30.00  inc. vat

£ 25.00 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

£ 75.48  inc. vat

£83.87save £8.39

£ 62.90 ex. vat

£69.89save £6.99
More Info

Thermaltake Litepower 550W PSU

  • 550W PSU
  • Ultra-Quiet Fan
  • Elongated Sleeved Cables
  • Utmost Reliability and Compatibility
  • Powerful Dedicated +12v Output

£ 29.97  inc. vat

£30.29save £0.32

£ 24.97 ex. vat

£25.24save £0.27
More Info

Corsair VS Series VS550 ATX Power Supply

  • 2x Molex Connectors
  • 7x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

£ 38.99  inc. vat

£45.94save £6.95

£ 32.49 ex. vat

£38.28save £5.79
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

£ 109.98  inc. vat

£120.68save £10.70

£ 91.65 ex. vat

£100.56save £8.91
More Info

Kolink Core Series 500W 80 Plus Certified Power Supply

  • Wattage: 500W
  • 80 Plus certified
  • Quiet 12cm fan cooling
  • Active PFC
  • 2 Year Warranty

£ 23.96  inc. vat

£ 19.96 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

£ 29.92  inc. vat

£32.73save £2.81

£ 24.93 ex. vat

£27.27save £2.34
More Info
Free Delivery* Corsair HX850i 850 Watt Power Supply

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...

£ 149.92  inc. vat

£172.72save £22.80

£ 124.93 ex. vat

£143.93save £19.00
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

£ 60.99  inc. vat

£ 50.82 ex. vat

More Info

Kolink Core Series 600W 80 Plus Certified Power Supply

  • Wattage: 600W
  • 80 Plus certified
  • Quiet 12cm fan cooling
  • Active PFC
  • 2 Year Warranty

£ 34.98  inc. vat

£ 29.15 ex. vat

More Info

Thermaltake Litepower 450W Power Supply

  • 80 Plus Efficiency
  • Ultra-Quiet Fan
  • Cables with High Flexibility
  • High-Quality Components

£ 25.97  inc. vat

£29.99save £4.02

£ 21.64 ex. vat

£24.99save £3.35
More Info

Kolink Core Series 300W 80 Plus Certified Power Supply

  • Wattage: 300W
  • 80 Plus certified
  • Quiet 12cm fan cooling
  • Active PFC
  • 2 Year Warranty

£ 19.92  inc. vat

£ 16.60 ex. vat

More Info
Free Delivery* Corsair CX Series CX450M 450W 80 Plus Bronze Certified Modular ATX PSU

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

£ 50.69  inc. vat

£54.80save £4.11

£ 42.24 ex. vat

£45.66save £3.42
More Info
Free Delivery* Thermaltake Smart RGB 700W PSU

Thermaltake Smart RGB 700W PSU

  • 10 LED Light Bulbs
  • 15 Lighting Modes
  • Ultra-Quiet 120mm Fan
  • 80 Plus Certified
  • High Quality Components

£ 57.84  inc. vat

£ 48.20 ex. vat

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

£ 79.98  inc. vat

£87.98save £8.00

£ 66.65 ex. vat

£73.31save £6.66
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

£ 97.97  inc. vat

£ 81.64 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

£ 79.49  inc. vat

£89.10save £9.61

£ 66.24 ex. vat

£74.25save £8.01
More Info
Free Delivery* Corsair HX750i 750 Watt Power Supply

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...

£ 137.80  inc. vat

£148.54save £10.74

£ 114.83 ex. vat

£123.78save £8.95
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

£ 87.99  inc. vat

£98.04save £10.05

£ 73.32 ex. vat

£81.70save £8.38
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

£ 164.99  inc. vat

£190.86save £25.87

£ 137.49 ex. vat

£159.05save £21.56
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

£ 93.69  inc. vat

£104.19save £10.50

£ 78.07 ex. vat

£86.82save £8.75
More Info
Free Delivery* Corsair VS Series VS650 650W Power Supply 80 Plus

Corsair VS Series VS650 650W Power Supply 80 Plus

  • 2x Molex Connectors
  • 7x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

£ 50.62  inc. vat

£ 42.18 ex. vat

More Info
Free Delivery* Riotoro Onyx 650W ATX Power Supply

Riotoro Onyx 650W ATX Power Supply

  • 80 Plus Bronze Certified
  • Semi-Modular
  • Flat Cables Reduce Clutter & Airflow
  • Thermally Controlled Fan
  • 3 Year Warranty

£ 51.00  inc. vat

£ 42.50 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

£ 60.29  inc. vat

£ 50.24 ex. vat

More Info

EVGA BR 450W 80+ Bronze Power Supply

  • Quiet and Intelligent Auto Fan
  • 80 PLUS Bronze certified
  • 3 Year Warranty
  • Hard Lined Design
  • Long Sleeve Bearing Fan

£ 30.00  inc. vat

£ 25.00 ex. vat

View Product
More Info

QuickFind: 869760   |   Mfr part code: 100-BR-0450-K3

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*

£ 75.48  inc. vat

£83.87save £8.39

£ 62.90 ex. vat

£69.89save £6.99
View Product
More Info

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

Thermaltake Litepower 550W PSU

  • 550W PSU
  • Ultra-Quiet Fan
  • Elongated Sleeved Cables
  • Utmost Reliability and Compatibility
  • Powerful Dedicated +12v Output

£ 29.97  inc. vat

£30.29save £0.32

£ 24.97 ex. vat

£25.24save £0.27
View Product
More Info

QuickFind: 845737   |   Mfr part code: PS-LTP-0550NPCNEU-2

Corsair VS Series VS550 ATX Power Supply

  • 2x Molex Connectors
  • 7x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

£ 38.99  inc. vat

£45.94save £6.95

£ 32.49 ex. vat

£38.28save £5.79
View Product
More Info

QuickFind: 834999   |   Mfr part code: CP-9020171-UK

EVGA 750w G3 80+ Modular Gold

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

£ 109.98  inc. vat

£120.68save £10.70

£ 91.65 ex. vat

£100.56save £8.91
View Product
More Info

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

Kolink Core Series 500W 80 Plus Certified Power Supply

  • Wattage: 500W
  • 80 Plus certified
  • Quiet 12cm fan cooling
  • Active PFC
  • 2 Year Warranty

£ 23.96  inc. vat

£ 19.96 ex. vat

View Product
More Info

QuickFind: 864707   |   Mfr part code: KL-C500

Coolermaster Masterwatt Lite V2 400w PSU

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

£ 29.92  inc. vat

£32.73save £2.81

£ 24.93 ex. vat

£27.27save £2.34
View Product
More Info

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

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...
Free Delivery*

£ 149.92  inc. vat

£172.72save £22.80

£ 124.93 ex. vat

£143.93save £19.00
View Product
More Info

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

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*

£ 60.99  inc. vat

£ 50.82 ex. vat

View Product
More Info

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

Kolink Core Series 600W 80 Plus Certified Power Supply

  • Wattage: 600W
  • 80 Plus certified
  • Quiet 12cm fan cooling
  • Active PFC
  • 2 Year Warranty

£ 34.98  inc. vat

£ 29.15 ex. vat

View Product
More Info

QuickFind: 864709   |   Mfr part code: KL-C600

Thermaltake Litepower 450W Power Supply

  • 80 Plus Efficiency
  • Ultra-Quiet Fan
  • Cables with High Flexibility
  • High-Quality Components

£ 25.97  inc. vat

£29.99save £4.02

£ 21.64 ex. vat

£24.99save £3.35
View Product
More Info

QuickFind: 856008   |   Mfr part code: PS-LTP-0450NPCN UK-2

Kolink Core Series 300W 80 Plus Certified Power Supply

  • Wattage: 300W
  • 80 Plus certified
  • Quiet 12cm fan cooling
  • Active PFC
  • 2 Year Warranty

£ 19.92  inc. vat

£ 16.60 ex. vat

View Product
More Info

QuickFind: 864705   |   Mfr part code: KL-C300

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
Free Delivery*

£ 50.69  inc. vat

£54.80save £4.11

£ 42.24 ex. vat

£45.66save £3.42
View Product
More Info

QuickFind: 745621   |   Mfr part code: CP-9020101-UK

Thermaltake Smart RGB 700W PSU

  • 10 LED Light Bulbs
  • 15 Lighting Modes
  • Ultra-Quiet 120mm Fan
  • 80 Plus Certified
  • High Quality Components
Free Delivery*

£ 57.84  inc. vat

£ 48.20 ex. vat

View Product
More Info

QuickFind: 855877   |   Mfr part code: PS-SPR-0700NHSAWK-1

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
Free Delivery*

£ 79.98  inc. vat

£87.98save £8.00

£ 66.65 ex. vat

£73.31save £6.66
View Product
More Info

QuickFind: 856936   |   Mfr part code: CP-9020177-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
Free Delivery*

£ 97.97  inc. vat

£ 81.64 ex. vat

View Product
More Info

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

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
Free Delivery*

£ 79.49  inc. vat

£89.10save £9.61

£ 66.24 ex. vat

£74.25save £8.01
View Product
More Info

QuickFind: 830658   |   Mfr part code: 120-GP-0650-X3

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...
Free Delivery*

£ 137.80  inc. vat

£148.54save £10.74

£ 114.83 ex. vat

£123.78save £8.95
View Product
More Info

QuickFind: 659514   |   Mfr part code: CP-9020072-UK

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*

£ 87.99  inc. vat

£98.04save £10.05

£ 73.32 ex. vat

£81.70save £8.38
View Product
More Info

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

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*

£ 164.99  inc. vat

£190.86save £25.87

£ 137.49 ex. vat

£159.05save £21.56
View Product
More Info

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

£ 93.69  inc. vat

£104.19save £10.50

£ 78.07 ex. vat

£86.82save £8.75
View Product
More Info

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

Corsair VS Series VS650 650W Power Supply 80 Plus

  • 2x Molex Connectors
  • 7x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor
Free Delivery*

£ 50.62  inc. vat

£ 42.18 ex. vat

View Product
More Info

QuickFind: 835150   |   Mfr part code: CP-9020172-UK

Riotoro Onyx 650W ATX Power Supply

  • 80 Plus Bronze Certified
  • Semi-Modular
  • Flat Cables Reduce Clutter & Airflow
  • Thermally Controlled Fan
  • 3 Year Warranty
Free Delivery*

£ 51.00  inc. vat

£ 42.50 ex. vat

View Product
More Info

QuickFind: 809572   |   Mfr part code: PR-BP0650-SM-UK

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*

£ 60.29  inc. vat

£ 50.24 ex. vat

View Product
More Info

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