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.
PC Computer Power Supply Units (142 products)
Read more about PC Computer Power Supply Units
Thermaltake Litepower 550W PSU
- 550W PSU
- Ultra-Quiet Fan
- Elongated Sleeved Cables
- Utmost Reliability and Compatibility
- Powerful Dedicated +12v Output
£ 31.18 inc. vat
£ 25.98 ex. vat
Thermaltake Litepower 650W PSU
- 80 Plus Efficiency
- Ultra-Quiet Fan
- Cables with High Flexibility
- High-Quality Components
£ 35.66 inc. vat
£ 29.71 ex. vat
Thermaltake Litepower 450W PSU
- Ultra-Quiet Fan
- Cables with High Flexibility
- High-Quality Components
£ 28.92 inc. vat
£ 24.10 ex. vat
EVGA 500w BR Power Supply
- 80 Plus Bronze
- Single 12V Rail
- Quiet and Intelligent Auto Fan for near-silent operation
- 85% efficiency or higher under typical loads
£ 39.48 inc. vat
£42.75save £3.27£ 32.90 ex. vat
£35.62save £2.72
Corsair 750W TX750M Gold Hybid Modular Power Supply/PSU
- 750W Corsair TX-M Series TX750M PSU
- 80PLUS Gold
- Hybrid Modular
- Single Rail, 62A + 12V, 120mm Fan
- ATX PSU
£ 83.49 inc. vat
£ 69.57 ex. vat
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)
£ 42.99 inc. vat
£46.60save £3.61£ 35.82 ex. vat
£38.83save £3.01
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
£ 41.49 inc. vat
£45.33save £3.84£ 34.57 ex. vat
£37.77save £3.20
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
£ 73.98 inc. vat
£ 61.65 ex. vat
Cooler Master MasterWatt 750 Semi Modular PSU
- 80 PLUS Bronze Certified
- Durable LDB Bearing
- Semi-Fanless up to 15% load
- Dual Forward and DC-to-DC Circuit Design
- More Conductive PCI-e Cables
£ 69.11 inc. vat
£76.19save £7.08£ 57.59 ex. vat
£63.49save £5.90
Corsair VS450 450 W Active PFC 80 PLUS Certified Power
- 80 PLUS efficiency: Runs cooler and uses less power than non-certified...
- 3-year warranty: Backed by CORSAIR's legendary technical support and...
£ 36.48 inc. vat
£42.33save £5.85£ 30.40 ex. vat
£35.27save £4.87
EVGA 100-BR-0700-K3 700 BR, 80+ Bronze 700W, Power Supply
- Quiet and Intelligent Auto Fan for near-silent operation
- 80 PLUS Bronze certified
- 85% efficiency or higher under typical loads
- 3 Year Warranty
£ 50.42 inc. vat
£53.12save £2.70£ 42.01 ex. vat
£44.26save £2.25
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...
£ 164.21 inc. vat
£ 136.84 ex. vat
Corsair CX550M Semi-Modular ATX Power Supply
- 80 PLUS Bronze certified
- Modular cable management Semi-Modular
- 120mm thermally controlled fan
- Five year warranty
£ 61.49 inc. vat
£64.98save £3.49£ 51.24 ex. vat
£54.15save £2.91
EVGA SuperNOVA 850 G3 Power Supply
- 80 Plus Gold
- Fully Modular
- SLI / Crossfire Ready
- Highest quality Japanese capacitors
- 10 Year Warranty
£ 114.22 inc. vat
£132.36save £18.14£ 95.18 ex. vat
£110.30save £15.12
Corsair CX series CX550 550W 80 PLUS BRONZE
- 80 PLUS Bronze certified
- Thermally Controlled Fan
- Non Modular
£ 57.99 inc. vat
£62.36save £4.37£ 48.32 ex. vat
£51.96save £3.64
Corsair TX850M 80 PLUS Bronze Certified 850 Watts
- • 8 Molex Connectors
- • 8 SATA Connectors
- • 4 PCI-E Connectors (6+2-Pin)
- • 0 Floppy Connectors
- • 4 + 4-Pin CPU Power Connector
£ 93.60 inc. vat
£ 78.00 ex. vat
Corsair HX750- 750 Watt Fully Modular PSU
- 80 PLUS® Platinum efficiency
- Zero RPM Fan Mode
- Quiet, efficient operation
- Easy Installation
£ 134.38 inc. vat
£ 111.98 ex. vat
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
£ 49.97 inc. vat
£ 41.64 ex. vat
Corsair RM650 650 Watt 80+ Gold Fully Modular PSU
- 80+ Gold Certified
- Fully Modular
- 140mm Fan Size
- Multiple GPU Ready
- Zero RPM Fan Mode
£ 78.48 inc. vat
£82.47save £3.99£ 65.40 ex. vat
£68.72save £3.32
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
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...
£ 153.48 inc. vat
£ 127.90 ex. vat
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
£ 55.49 inc. vat
£ 46.24 ex. vat
Evga 500w 80+ White Series Psu
- 80PLUS
- Fully Wired
- Single Rail,
- Intelligent Auto fan
- ATX PSU
£ 40.46 inc. vat
£45.41save £4.95£ 33.71 ex. vat
£37.84save £4.13
EVGA Supernova 750w PSU
- 80 PLUS Gold certified
- Fully Modular to reduce clutter and improve airflow.
- 100% Japanese Capacitors
£ 96.88 inc. vat
£ 80.73 ex. vat
Thermaltake Litepower 550W PSU
- 550W PSU
- Ultra-Quiet Fan
- Elongated Sleeved Cables
- Utmost Reliability and Compatibility
- Powerful Dedicated +12v Output
QuickFind: 845737
Mfr part code: PS-LTP-0550NPCNUK-2
£ 31.18 inc. vat
£ 25.98 ex. vat
Thermaltake Litepower 650W PSU
- 80 Plus Efficiency
- Ultra-Quiet Fan
- Cables with High Flexibility
- High-Quality Components
QuickFind: 856009
Mfr part code: PS-LTP-0650NPCN UK-2
£ 35.66 inc. vat
£ 29.71 ex. vat
Thermaltake Litepower 450W PSU
- Ultra-Quiet Fan
- Cables with High Flexibility
- High-Quality Components
QuickFind: 856008
Mfr part code: PS-LTP-0450NPCN UK-2
£ 28.92 inc. vat
£ 24.10 ex. vat
EVGA 500w BR Power Supply
- 80 Plus Bronze
- Single 12V Rail
- Quiet and Intelligent Auto Fan for near-silent operation
- 85% efficiency or higher under typical loads
QuickFind: 865260
Mfr part code: 100-BR-0500-K3
£ 39.48 inc. vat
£42.75save £3.27£ 32.90 ex. vat
£35.62save £2.72
Corsair 750W TX750M Gold Hybid Modular Power Supply/PSU
- 750W Corsair TX-M Series TX750M PSU
- 80PLUS Gold
- Hybrid Modular
- Single Rail, 62A + 12V, 120mm Fan
- ATX PSU
QuickFind: 782058
Mfr part code: CP-9020131-UK
£ 83.49 inc. vat
£ 69.57 ex. vat
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)
QuickFind: 716703
Mfr part code: 100-W1-0600-K3
£ 42.99 inc. vat
£46.60save £3.61£ 35.82 ex. vat
£38.83save £3.01
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
QuickFind: 834999
Mfr part code: CP-9020171-UK
£ 41.49 inc. vat
£45.33save £3.84£ 34.57 ex. vat
£37.77save £3.20
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
£ 73.98 inc. vat
£ 61.65 ex. vat
Cooler Master MasterWatt 750 Semi Modular PSU
- 80 PLUS Bronze Certified
- Durable LDB Bearing
- Semi-Fanless up to 15% load
- Dual Forward and DC-to-DC Circuit Design
- More Conductive PCI-e Cables
QuickFind: 826433
Mfr part code: MPX-7501-AMAAB-UK
£ 69.11 inc. vat
£76.19save £7.08£ 57.59 ex. vat
£63.49save £5.90
Corsair VS450 450 W Active PFC 80 PLUS Certified Power
- 80 PLUS efficiency: Runs cooler and uses less power than non-certified...
- 3-year warranty: Backed by CORSAIR's legendary technical support and...
QuickFind: 835000
Mfr part code: CP-9020170-UK
£ 36.48 inc. vat
£42.33save £5.85£ 30.40 ex. vat
£35.27save £4.87
EVGA 100-BR-0700-K3 700 BR, 80+ Bronze 700W, Power Supply
- Quiet and Intelligent Auto Fan for near-silent operation
- 80 PLUS Bronze certified
- 85% efficiency or higher under typical loads
- 3 Year Warranty
QuickFind: 856195
Mfr part code: 100-BR-0700-K3
£ 50.42 inc. vat
£53.12save £2.70£ 42.01 ex. vat
£44.26save £2.25
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...
QuickFind: 659513
Mfr part code: CP-9020073-UK
£ 164.21 inc. vat
£ 136.84 ex. vat
Corsair CX550M Semi-Modular ATX Power Supply
- 80 PLUS Bronze certified
- Modular cable management Semi-Modular
- 120mm thermally controlled fan
- Five year warranty
QuickFind: 743020
Mfr part code: CP-9020102-UK
£ 61.49 inc. vat
£64.98save £3.49£ 51.24 ex. vat
£54.15save £2.91
EVGA SuperNOVA 850 G3 Power Supply
- 80 Plus Gold
- Fully Modular
- SLI / Crossfire Ready
- Highest quality Japanese capacitors
- 10 Year Warranty
QuickFind: 769000
Mfr part code: 220-G3-0850-X3
£ 114.22 inc. vat
£132.36save £18.14£ 95.18 ex. vat
£110.30save £15.12
Corsair CX series CX550 550W 80 PLUS BRONZE
- 80 PLUS Bronze certified
- Thermally Controlled Fan
- Non Modular
QuickFind: 782046
Mfr part code: CP-9020121-UK
£ 57.99 inc. vat
£62.36save £4.37£ 48.32 ex. vat
£51.96save £3.64
Corsair TX850M 80 PLUS Bronze Certified 850 Watts
- • 8 Molex Connectors
- • 8 SATA Connectors
- • 4 PCI-E Connectors (6+2-Pin)
- • 0 Floppy Connectors
- • 4 + 4-Pin CPU Power Connector
QuickFind: 782059
Mfr part code: CP-9020130-UK
£ 93.60 inc. vat
£ 78.00 ex. vat
Corsair HX750- 750 Watt Fully Modular PSU
- 80 PLUS® Platinum efficiency
- Zero RPM Fan Mode
- Quiet, efficient operation
- Easy Installation
QuickFind: 788619
Mfr part code: CP-9020137-UK
£ 134.38 inc. vat
£ 111.98 ex. vat
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
QuickFind: 835150
Mfr part code: CP-9020172-UK
£ 49.97 inc. vat
£ 41.64 ex. vat
Corsair RM650 650 Watt 80+ Gold Fully Modular PSU
- 80+ Gold Certified
- Fully Modular
- 140mm Fan Size
- Multiple GPU Ready
- Zero RPM Fan Mode
QuickFind: 908646
Mfr part code: CP-9020194-UK
£ 78.48 inc. vat
£82.47save £3.99£ 65.40 ex. vat
£68.72save £3.32
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
£ 82.98 inc. vat
£ 69.15 ex. vat
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...
QuickFind: 659514
Mfr part code: CP-9020072-UK
£ 153.48 inc. vat
£ 127.90 ex. vat
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
QuickFind: 745621
Mfr part code: CP-9020101-UK
£ 55.49 inc. vat
£ 46.24 ex. vat
Evga 500w 80+ White Series Psu
- 80PLUS
- Fully Wired
- Single Rail,
- Intelligent Auto fan
- ATX PSU
QuickFind: 767324
Mfr part code: 100-W1-0500-K3
£ 40.46 inc. vat
£45.41save £4.95£ 33.71 ex. vat
£37.84save £4.13
EVGA Supernova 750w PSU
- 80 PLUS Gold certified
- Fully Modular to reduce clutter and improve airflow.
- 100% Japanese Capacitors
QuickFind: 830661
Mfr part code: 120-GP-0750-X3
£ 96.88 inc. vat
£ 80.73 ex. vat
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Why You Need A High Quality PSUThe 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 SupplyFirstly, 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.
OutputWhen 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 EfficiencyBut 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 CablingThere 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.