751W - 900W PSUs (12 products)

Add more power and greater efficiency to your system with a top quality PSU. The units featured on this page all have an output of between 751 and 900W. They are at the top end of the performance scale.

Read more about 751W - 900W PSUs

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Free Delivery* Corsair RMe Series RM850e Fully Modular Low-Noise ATX Power Supply

Corsair RMe Series RM850e Fully Modular Low-Noise ATX Power Supply

  • Intel® ATX 3.0 Certified
  • 105°C-Rated Capacitors
  • Modern Standby Compatible
  • 80 PLUS Gold-Certified
  • Zero RPM Fan Mode

£ 124.98  inc. vat

£ 104.15 ex. vat

0% Interest offers available

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Free Delivery* MSI MPG A850G PCIe5 ATX 3.0 850W Modular Power Supply 80 Plus Gold

MSI MPG A850G PCIe5 ATX 3.0 850W Modular Power Supply 80 Plus Gold

  • Supports Nvidia® GeForce RTX® 40 Series graphics cards
  • Full modular design
  • Flat cables
  • 80 Plus Gold certified for high efficiency

£ 140.99  inc. vat

£ 117.49 ex. vat

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CiT FX Pro 800W 80 PLUS Bronze Non-Modular PSU Power Supply

  • Wattage: 800w
  • Non-Modular Cables
  • 80 Plus Bronze
  • Fan Size: 140mm
  • Warranty: 2 Year Warranty

£ 49.98  inc. vat

£ 41.65 ex. vat

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Free Delivery* Corsair RM850x Shift Series, 850W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

Corsair RM850x Shift Series, 850W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

  • 850 Watts
  • 80 Plus efficiency Gold
  • 140mm Fan
  • PCIe 5.0 ATX 3.0 Certified
  • 10 Year Warranty

£ 147.99  inc. vat

£ 123.32 ex. vat

0% Interest offers available

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Free Delivery* MSI MAG A850GL 850W Full Modular 80+ Gold PCIE 5.0 ATX3.0 Compact Power Supply

MSI MAG A850GL 850W Full Modular 80+ Gold PCIE 5.0 ATX3.0 Compact Power Supply

  • ATX 3.0 Compatible
  • PCIe 5.0 Ready
  • 80 PLUS Gold Certification
  • Full Modular design
  • Active PFC design

£ 119.49  inc. vat

£ 99.57 ex. vat

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Free Delivery* CORSAIR SF-L Series SF850L Fully Modular Low-Noise SFX Power Supply

CORSAIR SF-L Series SF850L Fully Modular Low-Noise SFX Power Supply

  • Fully Modular, Micro-Fit PSU Connectors
  • 120mm Rifle Bearing PWM Fan
  • 100% Japanese 105°C-Rated Electrolytic Capacitors
  • Modern Standby Support

£ 149.99  inc. vat

£ 124.99 ex. vat

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Free Delivery* Corsair RM850x 850W Modular 80+ Gold Power Supply

Corsair RM850x 850W Modular 80+ Gold Power Supply

  • 850 Watts
  • 80+ Gold Certified
  • Fully Modular
  • ATX Form Factor
  • Warranty: 10 Years

£ 147.99  inc. vat

£ 123.32 ex. vat

0% Interest offers available

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Free Delivery* Cooler Master V SFX Gold 850W Modular 80+ Gold PSU

Cooler Master V SFX Gold 850W Modular 80+ Gold PSU

  • 4x Molex Connectors
  • 8x SATA Connectors
  • 4+4+8-Pin CPU Power Connector
  • Modular Cable System
  • SFX Form Factor

£ 148.49  inc. vat

£159.99save £11.50

£ 123.74 ex. vat

£133.32save £9.58

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Free Delivery* Cooler Master V Gold V2 850 Watt Fully Modular 80+ Gold Black PSU

Cooler Master V Gold V2 850 Watt Fully Modular 80+ Gold Black PSU

  • 80 Plus Gold Certified
  • Half-bridge LLC Resonant Converter And DC-DC Technology
  • Silent 135mm FDB Fan
  • 40% Semi-fanless Mode With Hybrid Switch

£ 99.99  inc. vat

£130.25save £30.26

£ 83.32 ex. vat

£108.54save £25.22

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Free Delivery* Cooler Master GX II 850 Watt Fully Modular 80+ Gold PSU/Power Supply

Cooler Master GX II 850 Watt Fully Modular 80+ Gold PSU/Power Supply

  • Fully Modular
  • 80PLUS Gold
  • Single Rail, 70.8A
  • 120mm HDB Fan

£ 139.98  inc. vat

£ 116.65 ex. vat

0% Interest offers available

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Free Delivery* Cooler Master GX III 850 Watt Fully Modular 80+ Gold PSU/Power Supply

Cooler Master GX III 850 Watt Fully Modular 80+ Gold PSU/Power Supply

  • Full Modular
  • 850 Watts 80PLUS Gold
  • PCIE 5 ATX3.0 PSU
  • Single Rail

£ 169.98  inc. vat

£ 141.65 ex. vat

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Free Delivery* ROG Loki SFX-L 850W Fully Modular 80+ Platinum ARGB Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

ROG Loki SFX-L 850W Fully Modular 80+ Platinum ARGB Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • PCIe 5.0 Ready and ATX3.0 Compatible
  • 120mm PWM Dual Ball Fan Bearings
  • ROG Heatsinks
  • ARGB Fan with Aura Sync
  • 10 Year Warranty

£ 229.97  inc. vat

£ 191.64 ex. vat

0% Interest offers available

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Free Delivery*

Corsair RMe Series RM850e Fully Modular Low-Noise ATX Power Supply

  • Intel® ATX 3.0 Certified
  • 105°C-Rated Capacitors
  • Modern Standby Compatible
  • 80 PLUS Gold-Certified
  • Zero RPM Fan Mode

QuickFind: 1830187

Mfr part code: CP-9020263-UK

£ 124.98  inc. vat

£ 104.15 ex. vat

0% Interest offers available

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Free Delivery*

MSI MPG A850G PCIe5 ATX 3.0 850W Modular Power Supply 80 Plus Gold

  • Supports Nvidia® GeForce RTX® 40 Series graphics cards
  • Full modular design
  • Flat cables
  • 80 Plus Gold certified for high efficiency

QuickFind: 1584827

Mfr part code: MPG A850G PCIE5

£ 140.99  inc. vat

£ 117.49 ex. vat

0% Interest offers available

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CiT FX Pro 800W 80 PLUS Bronze Non-Modular PSU Power Supply

  • Wattage: 800w
  • Non-Modular Cables
  • 80 Plus Bronze
  • Fan Size: 140mm
  • Warranty: 2 Year Warranty

QuickFind: 1818238

Mfr part code: CIT 800W FX PRO

£ 49.98  inc. vat

£ 41.65 ex. vat

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Corsair RM850x Shift Series, 850W, 80+ GOLD Certified, PCIe 5.0 ATX 3.0 Fully Modular PSU

  • 850 Watts
  • 80 Plus efficiency Gold
  • 140mm Fan
  • PCIe 5.0 ATX 3.0 Certified
  • 10 Year Warranty

QuickFind: 1615752

Mfr part code: CP-9020252-UK

£ 147.99  inc. vat

£ 123.32 ex. vat

0% Interest offers available

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Free Delivery*

MSI MAG A850GL 850W Full Modular 80+ Gold PCIE 5.0 ATX3.0 Compact Power Supply

  • ATX 3.0 Compatible
  • PCIe 5.0 Ready
  • 80 PLUS Gold Certification
  • Full Modular design
  • Active PFC design

QuickFind: 1869869

Mfr part code: MAG A850GL PCIE5

£ 119.49  inc. vat

£ 99.57 ex. vat

0% Interest offers available

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Free Delivery*

CORSAIR SF-L Series SF850L Fully Modular Low-Noise SFX Power Supply

  • Fully Modular, Micro-Fit PSU Connectors
  • 120mm Rifle Bearing PWM Fan
  • 100% Japanese 105°C-Rated Electrolytic Capacitors
  • Modern Standby Support

QuickFind: 1830178

Mfr part code: CP-9020245-UK

£ 149.99  inc. vat

£ 124.99 ex. vat

0% Interest offers available

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Free Delivery*

Corsair RM850x 850W Modular 80+ Gold Power Supply

  • 850 Watts
  • 80+ Gold Certified
  • Fully Modular
  • ATX Form Factor
  • Warranty: 10 Years

QuickFind: 1144842

Mfr part code: CP-9020200-UK

£ 147.99  inc. vat

£ 123.32 ex. vat

0% Interest offers available

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Free Delivery*

Cooler Master V SFX Gold 850W Modular 80+ Gold PSU

  • 4x Molex Connectors
  • 8x SATA Connectors
  • 4+4+8-Pin CPU Power Connector
  • Modular Cable System
  • SFX Form Factor

QuickFind: 1141298

Mfr part code: MPY-8501-SFHAGV-UK

£ 148.49  inc. vat

£159.99save £11.50

£ 123.74 ex. vat

£133.32save £9.58

0% Interest offers available

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Free Delivery*

Cooler Master V Gold V2 850 Watt Fully Modular 80+ Gold Black PSU

  • 80 Plus Gold Certified
  • Half-bridge LLC Resonant Converter And DC-DC Technology
  • Silent 135mm FDB Fan
  • 40% Semi-fanless Mode With Hybrid Switch

QuickFind: 1597260

Mfr part code: MPY-850V-AFBAG-UK

£ 99.99  inc. vat

£130.25save £30.26

£ 83.32 ex. vat

£108.54save £25.22

0% Interest offers available

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Free Delivery*

Cooler Master GX II 850 Watt Fully Modular 80+ Gold PSU/Power Supply

  • Fully Modular
  • 80PLUS Gold
  • Single Rail, 70.8A
  • 120mm HDB Fan

QuickFind: 1882192

Mfr part code: MPX-8503-AFAG-2BUK

£ 139.98  inc. vat

£ 116.65 ex. vat

0% Interest offers available

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Free Delivery*

Cooler Master GX III 850 Watt Fully Modular 80+ Gold PSU/Power Supply

  • Full Modular
  • 850 Watts 80PLUS Gold
  • PCIE 5 ATX3.0 PSU
  • Single Rail

QuickFind: 1882188

Mfr part code: MPX-8503-AFAG-BUK

£ 169.98  inc. vat

£ 141.65 ex. vat

0% Interest offers available

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Free Delivery*

ROG Loki SFX-L 850W Fully Modular 80+ Platinum ARGB Aura Sync ATX 3.0 Compatible PCIe 5.0 Ready Power Supply

  • PCIe 5.0 Ready and ATX3.0 Compatible
  • 120mm PWM Dual Ball Fan Bearings
  • ROG Heatsinks
  • ARGB Fan with Aura Sync
  • 10 Year Warranty

QuickFind: 1541413

Mfr part code: 90YE00N3-B0NA00

£ 229.97  inc. vat

£ 191.64 ex. vat

0% Interest offers available

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Up to 900W PSUs

900W power supplies deliver the highest performance you can expect from one of the best PSUs on the market. With such a high wattage, these PSUs are perfect for you PC system as PSUs run at their most efficient when they are at 50% capacity. With 900W you can run at the required capacity and still have space for any upgrades you wish to incorporate.

What is a PSU?

The power supply unit (PSU) is the piece of hardware which takes the power provided from the electrical outlet and distributes it to all the components of your computer. Additionally, it also regulates overheating by controlling voltage, which might change automatically or manually depending on the power supply.

Where is the PSU located?

It is mounted inside the back of the computer case. In actual fact, if you follow the power cable, it actually joins the power supply. The side of the PSU which faces the outside of the case has a three-pronged port that a power cable, connected to a power source, plugs into. In some cases, there is also a power switch and a voltage switch next to each other.

How are PSUs rated?

Power supply units are rated by wattage to show how much power they can provide to the computer. Since each computer part requires a certain amount of power to function properly, it's important to have a PSU that can provide the right amount. There are actually power calculators online which can assist you, but if you are having difficulty, then here at Ebuyer we have online specialists who can help you, with online chat.

How many watts do you need?

Let us presume that your system needs 500W at full capacity, it is not wise to get a 550W PSU but, go for a 650W one at least. That said, most gamers are not constantly playing games around the clock to put stress in their systems. Gaming can be seriously taxing on your PSU since they will generally fully load your graphics card, which is likely the most power-consuming part of your setup.

PSU Protection

As you would expect with anything that deals with large amounts of power, system safety is important. A good power supply needs to have fail-safes built in, not just to protect the PSU itself, but also to keep your system safe just in case there is a power surge or something unexpected happens. The PSU and motherboard are the only PC components which directly connect to almost every other piece of hardware in your system. Because of the unique position of the PSU in the layout of a PC, making sure it has built-in protection can help keep the rest of your hardware safe too.

A Power Supply Unit with this wattage will deliver more power to your computer components. If you are planning to upgrade your PC at some point it is always worth getting a PSU with more power than you need now to make later expansion easier. Explore our exceptional range of PSUs to find the perfect choice for you.