It's essential you use the correct power supply for your computer. Whether you're upgrading, building a new set up, or have a broken supply, we have plenty of high-quality, low cost power supplies available at Ebuyer.
PC Computer Power Supply Units (35 products)
Read more about PC Computer Power Supply Units
Showing 1 - 24 of 35 results
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CORSAIR CV Series CV650 - 650 Watt Power Supply
- 80 PLUS Bronze Certified
- Full Continuous Power
- Low-Noise Cooling
- Black Sleeving and Casing
- Three-Year Warranty
£ 51.99 inc. vat
£56.90save £4.91£ 43.32 ex. vat
£47.41save £4.09
Aerocool Integrator 700W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable
- 12cm Silent Fan
- 700w 80+ Efficiency
- Dimensions 150mm x 85mm x 140mm (W x H x D)
£ 41.85 inc. vat
£44.51save £2.66£ 34.87 ex. vat
£37.09save £2.22
Thermaltake Litepower 650W PSU
- 80 Plus Efficiency
- Ultra-Quiet Fan
- Cables with High Flexibility
- High-Quality Components
£ 41.99 inc. vat
£ 34.99 ex. vat
Aerocool Integrator 600W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable
- 12cm Silent Fan
- 600w 80+ Efficiency
- Dimensions 150mm x 85mm x 140mm (WxHxD)
£ 36.98 inc. vat
£38.99save £2.01£ 30.81 ex. vat
£32.49save £1.68
CORSAIR CV Series CV550 - 550 Watt Power Supply
- 80 PLUS Bronze Certified
- Full Continuous Power
- Low-Noise Cooling
- Black Sleeving and Casing
- Three-Year Warranty
£ 44.99 inc. vat
£50.00save £5.01£ 37.49 ex. vat
£41.66save £4.17
CORSAIR CV Series CV450 - 450 Watt Power Supply
- 80 PLUS Bronze Certified
- Full Continuous Power
- Low-Noise Cooling
- Black Sleeving and Casing
- Three-Year Warranty
£ 39.95 inc. vat
£46.48save £6.53£ 33.29 ex. vat
£38.73save £5.44
Thermaltake TR2 S Series 700W Power Supply 80 Plus
- Ultra-Quiet 120mm Fan
- Multiple Connectors
- 80 Plus 230V Standard Certified and Kaby Lake-Ready
- High Quality Components
£ 64.98 inc. vat
£ 54.15 ex. vat
Xenta 600W 80+ Power Supply Unit 230V with 12cm Fan
- 600w
- 12cm Low Noise Fan
- 80+ Efficiency
- APFC
- 3-Pin UK AC adaptor Included
£ 34.98 inc. vat
£35.98save £1.00£ 29.15 ex. vat
£29.98save £0.83
Aerocool Cylon 500W Power Supply 80 Plus
- 80Plus 230V EU Standard Certified for up to 85%+ efficiency
- Silent 12cm black fan with optimized thermal fan speed control...
£ 29.98 inc. vat
£36.98save £7.00£ 24.98 ex. vat
£30.81save £5.83
Be Quiet! Pure Power 11 400w Power Supply
- 80 Plus Gold
- Exceptionally Quiet Operation
- Silence-Optimized 120mm Be Quiet! Fan
- Attractively Sleeved Cables
- 5 Year Warranty
£ 51.99 inc. vat
£ 43.32 ex. vat
FSP 250W FLEX Power Supply FSP250-50GUB (Bronze)
- Max power: 250W Continous
- 80plus Bronze Certified: 85% efficient at Typical loads
- Japanese primary capacitor
- Flexible 20 or 24pin ATX connector
£ 34.98 inc. vat
£ 29.15 ex. vat
Aerocool Aero Bronze 750W PSU
- Up to 90%+ efficiency with 80Plus Bronze 230V EU certified
- Built-in premium 105°C Japanese main capacitors
- 12cm high-pressure fan with optimized fan speed
- DC-to-DC conversion circuit for higher efficiency
£ 68.93 inc. vat
£ 57.44 ex. vat
CISCO SYSTEMS PWR-C1-350WAC= Cisco - Power supply
- 350W AC Config 1 power supply
£ 439.98 inc. vat
£ 366.65 ex. vat
Finance from per month.
( APR) representative
Thermaltake Litepower 550W PSU
- 550W PSU
- Ultra-Quiet Fan
- Elongated Sleeved Cables
- Utmost Reliability and Compatibility
- Powerful Dedicated +12v Output
£ 37.98 inc. vat
£ 31.65 ex. vat
Aerocool Integrator 500W Power Supply, 80 Plus Bronze
- Wattage: 500W
- Non-Modular
- 80 PLUS Bronze
- 120mm
- ECO friendly
£ 32.99 inc. vat
£37.72save £4.73£ 27.49 ex. vat
£31.43save £3.94
Antec VP 400 PC EC
- 400W Continuous Power
- Up to 82% efficient
- 120 mm Silence
- Heavy-duty Caps
£ 34.26 inc. vat
£ 28.55 ex. vat
Be Quiet! Pure Power 11 300w Power Supply
- 80 Plus Bronze
- Exceptionally Quiet Operation
- Silence-Optimized 120mm Be Quiet! Fan
- Attractively Sleeved Cables
- 5 Year Warranty
£ 44.49 inc. vat
£ 37.07 ex. vat
Thermaltake Hamburg Pro RGB 550W 80+ Bronze
- 550W 80+ Bronze
- High Quality Japanese capacitor
- 10 LED Lights including 256 Colors RGB Cycle
- 120mm Fan for exceptional cooling
£ 51.60 inc. vat
£63.99save £12.39£ 43.00 ex. vat
£53.32save £10.32
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
£ 48.99 inc. vat
£ 40.82 ex. vat
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...
£ 43.98 inc. vat
£46.24save £2.26£ 36.65 ex. vat
£38.53save £1.88
Aerocool Cylon 400W Fully Wired 80+ PSU/Power Supply
- Fully Wired ATX PSU
- 80PLUS White
- Single Rail
- 30A
- 120mm Fan
£ 29.99 inc. vat
£34.32save £4.33£ 24.99 ex. vat
£28.60save £3.61
Xenta 400W 80+ Power Supply Unit 230V with 12cm Fan
- 400w
- 12cm Low Noise Fan
- 80+ Efficiency
- APFC
- 3-Pin UK AC adaptor Included
£ 28.98 inc. vat
£ 24.15 ex. vat
Aerocool Cylon 600W Fully Wired 80+ PSU/Power Supply
- Fully Wired 80 PLUS White
- Single Rail, 45A
- 120mm Fan
- ATX PSU
£ 37.00 inc. vat
£40.97save £3.97£ 30.83 ex. vat
£34.14save £3.31
CORSAIR CV Series CV650 - 650 Watt Power Supply
- 80 PLUS Bronze Certified
- Full Continuous Power
- Low-Noise Cooling
- Black Sleeving and Casing
- Three-Year Warranty
QuickFind: 951103
Mfr part code: CP-9020211-UK
£ 51.99 inc. vat
£56.90save £4.91£ 43.32 ex. vat
£47.41save £4.09
Aerocool Integrator 700W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable
- 12cm Silent Fan
- 700w 80+ Efficiency
- Dimensions 150mm x 85mm x 140mm (W x H x D)
QuickFind: 713439
Mfr part code: ACPB-IT70AKC.12
£ 41.85 inc. vat
£44.51save £2.66£ 34.87 ex. vat
£37.09save £2.22
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
£ 41.99 inc. vat
£ 34.99 ex. vat
Aerocool Integrator 600W 80+ Certified PSU 12cm Black Fan Active PFC TW Caps UK Cable
- 12cm Silent Fan
- 600w 80+ Efficiency
- Dimensions 150mm x 85mm x 140mm (WxHxD)
QuickFind: 713436
Mfr part code: ACP-I600HG
£ 36.98 inc. vat
£38.99save £2.01£ 30.81 ex. vat
£32.49save £1.68
CORSAIR CV Series CV550 - 550 Watt Power Supply
- 80 PLUS Bronze Certified
- Full Continuous Power
- Low-Noise Cooling
- Black Sleeving and Casing
- Three-Year Warranty
QuickFind: 951102
Mfr part code: CP-9020210-UK
£ 44.99 inc. vat
£50.00save £5.01£ 37.49 ex. vat
£41.66save £4.17
CORSAIR CV Series CV450 - 450 Watt Power Supply
- 80 PLUS Bronze Certified
- Full Continuous Power
- Low-Noise Cooling
- Black Sleeving and Casing
- Three-Year Warranty
QuickFind: 951101
Mfr part code: CP-9020209-UK
£ 39.95 inc. vat
£46.48save £6.53£ 33.29 ex. vat
£38.73save £5.44
Cougar VTE 500W 80 Plus Bronze Fixed Cable ATX PSU Series
QuickFind: 958340
Mfr part code: VTE500
£ 34.43 inc. vat
£ 28.69 ex. vat
Thermaltake TR2 S Series 700W Power Supply 80 Plus
- Ultra-Quiet 120mm Fan
- Multiple Connectors
- 80 Plus 230V Standard Certified and Kaby Lake-Ready
- High Quality Components
QuickFind: 788083
Mfr part code: PS-TRS-0700NPCWUK-2
£ 64.98 inc. vat
£ 54.15 ex. vat
Xenta 600W 80+ Power Supply Unit 230V with 12cm Fan
- 600w
- 12cm Low Noise Fan
- 80+ Efficiency
- APFC
- 3-Pin UK AC adaptor Included
QuickFind: 966446
Mfr part code: XEN - 600W
£ 34.98 inc. vat
£35.98save £1.00£ 29.15 ex. vat
£29.98save £0.83
Aerocool Cylon 500W Power Supply 80 Plus
- 80Plus 230V EU Standard Certified for up to 85%+ efficiency
- Silent 12cm black fan with optimized thermal fan speed control...
QuickFind: 964797
Mfr part code: ACPW-CN50AKC.11
£ 29.98 inc. vat
£36.98save £7.00£ 24.98 ex. vat
£30.81save £5.83
Be Quiet! Pure Power 11 400w Power Supply
- 80 Plus Gold
- Exceptionally Quiet Operation
- Silence-Optimized 120mm Be Quiet! Fan
- Attractively Sleeved Cables
- 5 Year Warranty
QuickFind: 865166
Mfr part code: BN292
£ 51.99 inc. vat
£ 43.32 ex. vat
FSP 250W FLEX Power Supply FSP250-50GUB (Bronze)
- Max power: 250W Continous
- 80plus Bronze Certified: 85% efficient at Typical loads
- Japanese primary capacitor
- Flexible 20 or 24pin ATX connector
QuickFind: 973093
Mfr part code: FSP250-50GUB
£ 34.98 inc. vat
£ 29.15 ex. vat
Aerocool Aero Bronze 750W PSU
- Up to 90%+ efficiency with 80Plus Bronze 230V EU certified
- Built-in premium 105°C Japanese main capacitors
- 12cm high-pressure fan with optimized fan speed
- DC-to-DC conversion circuit for higher efficiency
QuickFind: 975186
Mfr part code: ACPB-AR75AKC.11
£ 68.93 inc. vat
£ 57.44 ex. vat
CISCO SYSTEMS PWR-C1-350WAC= Cisco - Power supply
- 350W AC Config 1 power supply
QuickFind: 483999
Mfr part code: PWR-C1-350WAC=
£ 439.98 inc. vat
£ 366.65 ex. vat
Finance from per month.
( APR) representative
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
£ 37.98 inc. vat
£ 31.65 ex. vat
Aerocool Integrator 500W Power Supply, 80 Plus Bronze
- Wattage: 500W
- Non-Modular
- 80 PLUS Bronze
- 120mm
- ECO friendly
QuickFind: 989985
Mfr part code: ACPB-IT50AKC.11
£ 32.99 inc. vat
£37.72save £4.73£ 27.49 ex. vat
£31.43save £3.94
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
£ 34.26 inc. vat
£ 28.55 ex. vat
Be Quiet! Pure Power 11 300w Power Supply
- 80 Plus Bronze
- Exceptionally Quiet Operation
- Silence-Optimized 120mm Be Quiet! Fan
- Attractively Sleeved Cables
- 5 Year Warranty
QuickFind: 865164
Mfr part code: BN290
£ 44.49 inc. vat
£ 37.07 ex. vat
Thermaltake Hamburg Pro RGB 550W 80+ Bronze
- 550W 80+ Bronze
- High Quality Japanese capacitor
- 10 LED Lights including 256 Colors RGB Cycle
- 120mm Fan for exceptional cooling
QuickFind: 982574
Mfr part code: W0592RE
£ 51.60 inc. vat
£63.99save £12.39£ 43.00 ex. vat
£53.32save £10.32
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
£ 48.99 inc. vat
£ 40.82 ex. vat
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
£ 43.98 inc. vat
£46.24save £2.26£ 36.65 ex. vat
£38.53save £1.88
Aerocool Cylon 400W Fully Wired 80+ PSU/Power Supply
- Fully Wired ATX PSU
- 80PLUS White
- Single Rail
- 30A
- 120mm Fan
QuickFind: 958727
Mfr part code: ACPW-CN40AKC.11
£ 29.99 inc. vat
£34.32save £4.33£ 24.99 ex. vat
£28.60save £3.61
Xenta 400W 80+ Power Supply Unit 230V with 12cm Fan
- 400w
- 12cm Low Noise Fan
- 80+ Efficiency
- APFC
- 3-Pin UK AC adaptor Included
QuickFind: 966444
Mfr part code: XEN-400W
£ 28.98 inc. vat
£ 24.15 ex. vat
Aerocool Cylon 600W Fully Wired 80+ PSU/Power Supply
- Fully Wired 80 PLUS White
- Single Rail, 45A
- 120mm Fan
- ATX PSU
QuickFind: 975187
Mfr part code: ACPW-CN60AKC.11
£ 37.00 inc. vat
£40.97save £3.97£ 30.83 ex. vat
£34.14save £3.31
Showing 1 - 24 of 35 results
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If your power supply doesn't provide enough power for your system, it can cause serious performance issues or system errors. Whether you're building your own PC, or need to replace a faulty power supply, it's important to work out the type and wattage of the power supply you need.
It's important to check the efficiency rating of your power supply; 80%+ efficiency PSUs are a better option, as they waste less electricity, and don't create as much heat inside your system. You should also consider whether you're looking for a modular or non-modular power supply - this will impact the way you build your system, manage cables, and upgrade in the future.
How do I know which power supply I need for a computer?
Which power supply you should buy depends on the components in your computer, and what you use the system for. Generally speaking, you should aim for a power supply that delivers a wattage at least 40% greater than the wattage used by your hardware combined.
You'll also need to consider the processes you use your computer for - your system will work harder when running more demanding programs or games, and therefore will require more power. As a result, gamers and designers will need more headroom than those who use their computers for social media or admin tasks.
What is the power supply on a computer?
The power supply unit (PSU) in your computer converts alternating current (AC) from your plug socket into a continuous current (DC) to run the hardware in your computer. It's essentially the system that provides electricity to your set up, allowing it to power on. A low quality or under-powered PSU will cause erratic performance, and potentially damage your system.
What voltage is a PC power supply?
The power supply itself doesn't have voltage - it converts voltage from the plug socket into a low voltage direct current (DC). In Europe, this is usually around 220-240 volts, and the DC it is converted to will vary.