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 (86 products)
Read more about PC Computer Power Supply Units
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
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
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
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
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
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 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
Xenta 500W 80+ Power Supply Unit 230V with 12cm Fan
- 500w
- 12cm Low Noise Fan
- 80+ Efficiency
- APFC
- 3-Pin UK AC adaptor Included
£ 31.98 inc. vat
£ 26.65 ex. vat
Antec 650W EA650G PRO EarthWatts Gold Pro PSU
- 650 W
- 80 Plus Gold Certified
- Hybrid Modular Cable Management
- Whisper-quiet, high-quality fan
- 7 Year Warranty
£ 78.99 inc. vat
£88.77save £9.78£ 65.82 ex. vat
£73.97save £8.15
Corsair CX-F RGB Series 750W 80 Plus Bronze Fully Modular PSU Power Supply
- Wattage: 750W
- Fully-Modular
- 80 Plus Bronze
- 120mm RGB Fan
£ 89.99 inc. vat
£ 74.99 ex. vat
Corsair AX1600i 1600W Modular 80+ Titanium PSU
- 9x Molex Connectors
- 16x SATA Connectors
- 10x PCIe Connectors (6+2-Pin)
- Modular Cable System
- ATX Form Factor
£ 399.98 inc. vat
£421.64save £21.66£ 333.31 ex. vat
£351.36save £18.05
Finance from per month.
( APR) representative
Antec 550W EA550G PRO EarthWatts Gold Pro PSU
- 80 Plus Gold Certified
- Semi Modular
- 100% Japanese Capacitors
- Whisper-quiet, high-quality fan
- 7 Year Warranty
£ 69.99 inc. vat
£77.46save £7.47£ 58.32 ex. vat
£64.55save £6.23
Premium Braided 30cm PSU Extension Cable Kit - Black
- 24pin
- 6pin
- 4+4pin
- 6+2pin
£ 14.94 inc. vat
£ 12.45 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
Premium Braided PSU Extension Cable Kit - White & Black
- 24pin
- 6pin
- 4+4pin
- 6+2pin
£ 14.92 inc. vat
£ 12.43 ex. vat
Aerocool Cylon 700w 80+ Psu
- Wattage: 700W
- Non-Modular
- 80 PLUS White
- 120mm Fan
- 2 Year Warranty
£ 38.99 inc. vat
£42.39save £3.40£ 32.49 ex. vat
£35.32save £2.83
Adata XPG CORE REACTOR 750W Modular 80+ Gold PSU
- 750W 80+ Gold
- 4x Molex Connectors
- 12x SATA Connectors
- 4x PCIe Connectors (6+2-Pin)
- Modular Cable System
£ 104.99 inc. vat
£ 87.49 ex. vat
0% Interest offers available
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
Premium Braided 30cm PSU Exention Cable Kit - Red
- 24pin
- 6pin
- 4+4pin
- 6+2pin
£ 14.99 inc. vat
£ 12.49 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
Corsair CX-F RGB Series 650W 80 Plus Bronze Fully Modular PSU Power Supply
- Wattage: 650W
- Fully-Modular
- 80 Plus Bronze
- 120mm RGB Fan
£ 82.98 inc. vat
£ 69.15 ex. vat
Antec VP600P Plus Power Supply
- 600W Continuous Power
- Up to 88% efficient
- High Current Rails - 2 +12V rails with high load capabilities...
- 120 mm Silence Fans
£ 53.02 inc. vat
£57.22save £4.20£ 44.18 ex. vat
£47.68save £3.50
Thermaltake Berlin Pro RGB 650W 80+ Bronze PSU
- 650W 80+ Bronze Rated
- High quality Japanese main capacitor.
- 10 LED Lights including 256 Colors RGB Cycle
- Prepared for the new Intel processors Kabylake
£ 62.98 inc. vat
£74.49save £11.51£ 52.48 ex. vat
£62.07save £9.59
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
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
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
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
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
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 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
Xenta 500W 80+ Power Supply Unit 230V with 12cm Fan
- 500w
- 12cm Low Noise Fan
- 80+ Efficiency
- APFC
- 3-Pin UK AC adaptor Included
QuickFind: 966445
Mfr part code: XEN-500W
£ 31.98 inc. vat
£ 26.65 ex. vat
Antec 650W EA650G PRO EarthWatts Gold Pro PSU
- 650 W
- 80 Plus Gold Certified
- Hybrid Modular Cable Management
- Whisper-quiet, high-quality fan
- 7 Year Warranty
QuickFind: 810564
Mfr part code: 0-761345-11619-0
£ 78.99 inc. vat
£88.77save £9.78£ 65.82 ex. vat
£73.97save £8.15
Corsair CX-F RGB Series 750W 80 Plus Bronze Fully Modular PSU Power Supply
- Wattage: 750W
- Fully-Modular
- 80 Plus Bronze
- 120mm RGB Fan
QuickFind: 1125962
Mfr part code: CP-9020218-UK
£ 89.99 inc. vat
£ 74.99 ex. vat
Corsair AX1600i 1600W Modular 80+ Titanium PSU
- 9x Molex Connectors
- 16x SATA Connectors
- 10x PCIe Connectors (6+2-Pin)
- Modular Cable System
- ATX Form Factor
QuickFind: 843896
Mfr part code: CP-9020087-UK
£ 399.98 inc. vat
£421.64save £21.66£ 333.31 ex. vat
£351.36save £18.05
Finance from per month.
( APR) representative
Antec 550W EA550G PRO EarthWatts Gold Pro PSU
- 80 Plus Gold Certified
- Semi Modular
- 100% Japanese Capacitors
- Whisper-quiet, high-quality fan
- 7 Year Warranty
QuickFind: 810565
Mfr part code: 0-761345-11615-2
£ 69.99 inc. vat
£77.46save £7.47£ 58.32 ex. vat
£64.55save £6.23
Premium Braided 30cm PSU Extension Cable Kit - Black
- 24pin
- 6pin
- 4+4pin
- 6+2pin
QuickFind: 912961
Mfr part code: PSUBLACK
£ 14.94 inc. vat
£ 12.45 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
Premium Braided PSU Extension Cable Kit - White & Black
- 24pin
- 6pin
- 4+4pin
- 6+2pin
QuickFind: 912965
Mfr part code: PSUWHITEBLK
£ 14.92 inc. vat
£ 12.43 ex. vat
Aerocool Cylon 700w 80+ Psu
- Wattage: 700W
- Non-Modular
- 80 PLUS White
- 120mm Fan
- 2 Year Warranty
QuickFind: 958728
Mfr part code: ACPW-CN70AKC.11
£ 38.99 inc. vat
£42.39save £3.40£ 32.49 ex. vat
£35.32save £2.83
Adata XPG CORE REACTOR 750W Modular 80+ Gold PSU
- 750W 80+ Gold
- 4x Molex Connectors
- 12x SATA Connectors
- 4x PCIe Connectors (6+2-Pin)
- Modular Cable System
QuickFind: 990077
Mfr part code: XPG CORE REACTOR 750
£ 104.99 inc. vat
£ 87.49 ex. vat
0% Interest offers available
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
Premium Braided 30cm PSU Exention Cable Kit - Red
- 24pin
- 6pin
- 4+4pin
- 6+2pin
QuickFind: 912960
Mfr part code: PSURED
£ 14.99 inc. vat
£ 12.49 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
Corsair CX-F RGB Series 650W 80 Plus Bronze Fully Modular PSU Power Supply
- Wattage: 650W
- Fully-Modular
- 80 Plus Bronze
- 120mm RGB Fan
QuickFind: 1125960
Mfr part code: CP-9020217-UK
£ 82.98 inc. vat
£ 69.15 ex. vat
Antec VP600P Plus Power Supply
- 600W Continuous Power
- Up to 88% efficient
- High Current Rails - 2 +12V rails with high load capabilities...
- 120 mm Silence Fans
QuickFind: 958338
Mfr part code: 0-761345-11656-5
£ 53.02 inc. vat
£57.22save £4.20£ 44.18 ex. vat
£47.68save £3.50
Thermaltake Berlin Pro RGB 650W 80+ Bronze PSU
- 650W 80+ Bronze Rated
- High quality Japanese main capacitor.
- 10 LED Lights including 256 Colors RGB Cycle
- Prepared for the new Intel processors Kabylake
QuickFind: 982575
Mfr part code: W0593RE
£ 62.98 inc. vat
£74.49save £11.51£ 52.48 ex. vat
£62.07save £9.59Return to top
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.