751W - 900W PSUs (19 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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Corsair RM Series RM850 850W Fully Modular Power Supply

  • 850W Fully Modular Power Supply
  • Ultra Low Noise
  • 140mm Fan with Zero RPM Mode
  • 10 Year Warranty

£ 92.99  inc. vat

£119.99save £27.00

£ 77.49 ex. vat

£99.99save £22.50
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MSI MPG A850GF 850W Modular 80+ Gold PSU

  • 5x Molex Connectors
  • 8x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4+4+8-Pin CPU Power Connector
  • ATX Form Factor

£ 99.99  inc. vat

£115.37save £15.38

£ 83.32 ex. vat

£96.14save £12.82

0% Interest offers available

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Be Quiet! Straight Power 11 850w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency
  • Powerful multi-GPU support
  • Japanese capacitors ensure reliability
  • 5-year manufacturer’s warranty

£ 119.99  inc. vat

£129.62save £9.63

£ 99.99 ex. vat

£108.01save £8.02

0% Interest offers available

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Free Next Day Delivery* Corsair TX850M  80 PLUS Bronze Certified 850 Watts

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

£ 86.99  inc. vat

£ 72.49 ex. vat

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Thermaltake Toughpower GF 850 Watt Full Modular 80+ Gold PSU/Power Supply

  • 850W 80+ Gold
  • Full Modular
  • SLI/CrossFire
  • 140mm Fan, ATX,
  • 10 Year Warranty

£ 84.99  inc. vat

£91.92save £6.93

£ 70.82 ex. vat

£76.60save £5.78
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Thermaltake Toughpower PF1 850W ARGB Full Modular Power Supply

  • 80 Plus Platinum 850W Power Supply
  • Sync with Asus, Gigabyte, MSI and ASRock Boards
  • 100% Japanese Capacitors
  • 10 Year Warranty

£ 136.85  inc. vat

£ 114.04 ex. vat

0% Interest offers available

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ASUS ROG Strix 850W 80 PLUS Gold Fully-Modular PSU Power Supply

  • Wattage: 850W
  • Fully-Modular
  • 80 PLUS Gold
  • 135mm Fan
  • 10 Year Warranty

£ 149.49  inc. vat

£ 124.57 ex. vat

0% Interest offers available

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ASUS ROG Strix 850W White Edition Gold Modular PSU / Power Supply

  • 850W Full Modular
  • 80 PLUS Gold
  • SLI/CrossFire Single Rail
  • 135mm Fan

£ 164.99  inc. vat

£ 137.49 ex. vat

0% Interest offers available

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EXDISPLAY ASUS ROG Strix 850W White Edition Gold Modular PSU / Power Supply

  • 850W Full Modular
  • 80 PLUS Gold
  • SLI/CrossFire Single Rail
  • 135mm Fan

£ 149.60  inc. vat

£ 124.66 ex. vat

0% Interest offers available

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Seasonic G12 GC-850 Watt Fully Wired 80+ Gold PSU/Power Supply

  • Fully Wired
  • 80 PLUS Gold
  • Single Rail 70A
  • 120mm Fan
  • ATX PSU

£ 110.49  inc. vat

£ 92.07 ex. vat

0% Interest offers available

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Thermaltake Toughpower GF1 850 Watt Full Modular 80+ Gold ARGB PSU/Power Supply

  • 850 W 80 PLUS Gold
  • 150 x 86 x 160 (WxHxD)
  • 1 x 140mm w/ Addressable RGB LEDs

£ 155.00  inc. vat

£171.80save £16.80

£ 129.16 ex. vat

£143.16save £14.00

0% Interest offers available

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Antec HCG 850W Gold Power Supply

  • 120mm FDB Fan
  • Zero RPM Mode
  • 850W
  • 100% Modular
  • PhaseWave design

£ 114.48  inc. vat

£ 95.40 ex. vat

0% Interest offers available

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Seasonic B12 850W 80+ Bronze Wired Power Supply

  • 80PLUS Bronze Wired PSU
  • Single Rail
  • 70A +12V
  • Black
  • ATX PSU

£ 91.88  inc. vat

£ 76.56 ex. vat

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Fractal Design ION+ 2 Platinum 760 Watt Fully Modular Power Supply/PSU

  • Fully Modular
  • 80PLUS Platinum
  • SLI/CrossFire
  • Single Rail
  • 63.3A

£ 119.99  inc. vat

£ 99.99 ex. vat

0% Interest offers available

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Thermaltake Toughpower PF1 850 Watt Full Modular 80+ Platinum PSU/Power Supply

  • 850w 80 PLUS Platinum
  • Single Rail
  • 120mm Fan
  • 70A
  • ATX PSU

£ 185.99  inc. vat

£ 154.99 ex. vat

0% Interest offers available

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Cougar GEX 850W 80 Plus Gold Fully Modular ATX PSU Series

  • 850W 80 Plus Gold
  • 120mm Silent Fan
  • Fully Modular
  • Up To 91% Efficiency

£ 98.51  inc. vat

£ 82.09 ex. vat

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Gigabyte AORUS P850W Modular 80+ Gold Power Supply

  • Fully Modular Design
  • High quality 100% Japanese Capacitors
  • 135mm 2 ball bearing smart fan
  • 80 PLUS Gold certified
  • 10 year warranty

£ 113.99  inc. vat

£ 94.99 ex. vat

0% Interest offers available

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Asus ROG THOR 850W PSU

  • 80 Plus Platinum Certification
  • OLED Power Display
  • ROG Thermal Solution
  • Asus Aura Sync
  • Wing-Blade Fan with 0DB Technology

£ 199.95  inc. vat

£ 166.62 ex. vat

0% Interest offers available

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Free Next Day Delivery* Corsair HX850 - 850 Watt  Fully Modular PSU

Corsair HX850 - 850 Watt Fully Modular PSU

  • 80 PLUS® Platinum efficiency
  • Zero RPM Fan Mode
  • Quiet, efficient operation
  • Easy Installation

£ 176.49  inc. vat

£ 147.07 ex. vat

0% Interest offers available

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Corsair RM Series RM850 850W Fully Modular Power Supply

  • 850W Fully Modular Power Supply
  • Ultra Low Noise
  • 140mm Fan with Zero RPM Mode
  • 10 Year Warranty

QuickFind: 1419378

Mfr part code: CP-9020235-UK

£ 92.99  inc. vat

£119.99save £27.00

£ 77.49 ex. vat

£99.99save £22.50
More Info

MSI MPG A850GF 850W Modular 80+ Gold PSU

  • 5x Molex Connectors
  • 8x SATA Connectors
  • 6x PCIe Connectors (6+2-Pin)
  • 4+4+8-Pin CPU Power Connector
  • ATX Form Factor

QuickFind: 1128798

Mfr part code: MPG A850GF

£ 99.99  inc. vat

£115.37save £15.38

£ 83.32 ex. vat

£96.14save £12.82

0% Interest offers available

More Info

Be Quiet! Straight Power 11 850w - 80plus Gold Power Supply

  • Virtually inaudible SilentWings 3 135mm fan
  • 80PLUS® Gold efficiency
  • Powerful multi-GPU support
  • Japanese capacitors ensure reliability
  • 5-year manufacturer’s warranty

QuickFind: 826249

Mfr part code: BN284

£ 119.99  inc. vat

£129.62save £9.63

£ 99.99 ex. vat

£108.01save £8.02

0% Interest offers available

More Info
Free Next Day Delivery*

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

£ 86.99  inc. vat

£ 72.49 ex. vat

More Info

Thermaltake Toughpower GF 850 Watt Full Modular 80+ Gold PSU/Power Supply

  • 850W 80+ Gold
  • Full Modular
  • SLI/CrossFire
  • 140mm Fan, ATX,
  • 10 Year Warranty

QuickFind: 1139881

Mfr part code: PS-TPD-0850FNFAGK-2

£ 84.99  inc. vat

£91.92save £6.93

£ 70.82 ex. vat

£76.60save £5.78
More Info

Thermaltake Toughpower PF1 850W ARGB Full Modular Power Supply

  • 80 Plus Platinum 850W Power Supply
  • Sync with Asus, Gigabyte, MSI and ASRock Boards
  • 100% Japanese Capacitors
  • 10 Year Warranty

QuickFind: 1139882

Mfr part code: PS-TPD-0850F3FAPK-1

£ 136.85  inc. vat

£ 114.04 ex. vat

0% Interest offers available

More Info

ASUS ROG Strix 850W 80 PLUS Gold Fully-Modular PSU Power Supply

  • Wattage: 850W
  • Fully-Modular
  • 80 PLUS Gold
  • 135mm Fan
  • 10 Year Warranty

QuickFind: 1092780

Mfr part code: 90YE00A3-B0NA00

£ 149.49  inc. vat

£ 124.57 ex. vat

0% Interest offers available

More Info

ASUS ROG Strix 850W White Edition Gold Modular PSU / Power Supply

  • 850W Full Modular
  • 80 PLUS Gold
  • SLI/CrossFire Single Rail
  • 135mm Fan

QuickFind: 1092779

Mfr part code: 90YE00A4-B0NA00

£ 164.99  inc. vat

£ 137.49 ex. vat

0% Interest offers available

More Info

EXDISPLAY ASUS ROG Strix 850W White Edition Gold Modular PSU / Power Supply

  • 850W Full Modular
  • 80 PLUS Gold
  • SLI/CrossFire Single Rail
  • 135mm Fan

QuickFind: 1423824

Mfr part code: EBR1-90YE00A4-B0NA00

£ 149.60  inc. vat

£ 124.66 ex. vat

0% Interest offers available

More Info

Seasonic G12 GC-850 Watt Fully Wired 80+ Gold PSU/Power Supply

  • Fully Wired
  • 80 PLUS Gold
  • Single Rail 70A
  • 120mm Fan
  • ATX PSU

QuickFind: 1287211

Mfr part code: G12-GC-850

£ 110.49  inc. vat

£ 92.07 ex. vat

0% Interest offers available

More Info

Thermaltake Toughpower GF1 850 Watt Full Modular 80+ Gold ARGB PSU/Power Supply

  • 850 W 80 PLUS Gold
  • 150 x 86 x 160 (WxHxD)
  • 1 x 140mm w/ Addressable RGB LEDs

QuickFind: 914022

Mfr part code: PS-TPD-0850F3FAGE-1

£ 155.00  inc. vat

£171.80save £16.80

£ 129.16 ex. vat

£143.16save £14.00

0% Interest offers available

More Info

Antec HCG 850W Gold Power Supply

  • 120mm FDB Fan
  • Zero RPM Mode
  • 850W
  • 100% Modular
  • PhaseWave design

QuickFind: 830328

Mfr part code: 0-761345-11643-5

£ 114.48  inc. vat

£ 95.40 ex. vat

0% Interest offers available

More Info

Seasonic B12 850W 80+ Bronze Wired Power Supply

  • 80PLUS Bronze Wired PSU
  • Single Rail
  • 70A +12V
  • Black
  • ATX PSU

QuickFind: 1287215

Mfr part code: B12 BC-850

£ 91.88  inc. vat

£ 76.56 ex. vat

More Info

Fractal Design ION+ 2 Platinum 760 Watt Fully Modular Power Supply/PSU

  • Fully Modular
  • 80PLUS Platinum
  • SLI/CrossFire
  • Single Rail
  • 63.3A

QuickFind: 1261588

Mfr part code: FD-P-IA2P-760-UK

£ 119.99  inc. vat

£ 99.99 ex. vat

0% Interest offers available

More Info

Thermaltake Toughpower PF1 850 Watt Full Modular 80+ Platinum PSU/Power Supply

  • 850w 80 PLUS Platinum
  • Single Rail
  • 120mm Fan
  • 70A
  • ATX PSU

QuickFind: 1036165

Mfr part code: PS-TPD-0850FNFAPK-1

£ 185.99  inc. vat

£ 154.99 ex. vat

0% Interest offers available

More Info

Cougar GEX 850W 80 Plus Gold Fully Modular ATX PSU Series

  • 850W 80 Plus Gold
  • 120mm Silent Fan
  • Fully Modular
  • Up To 91% Efficiency

QuickFind: 1126393

Mfr part code: GEX850

£ 98.51  inc. vat

£ 82.09 ex. vat

More Info

Gigabyte AORUS P850W Modular 80+ Gold Power Supply

  • Fully Modular Design
  • High quality 100% Japanese Capacitors
  • 135mm 2 ball bearing smart fan
  • 80 PLUS Gold certified
  • 10 year warranty

QuickFind: 868519

Mfr part code: GP-AP850GM-UK

£ 113.99  inc. vat

£ 94.99 ex. vat

0% Interest offers available

More Info

Asus ROG THOR 850W PSU

  • 80 Plus Platinum Certification
  • OLED Power Display
  • ROG Thermal Solution
  • Asus Aura Sync
  • Wing-Blade Fan with 0DB Technology

QuickFind: 862350

Mfr part code: 90YE0090-B001N0

£ 199.95  inc. vat

£ 166.62 ex. vat

0% Interest offers available

More Info
Free Next Day Delivery*

Corsair HX850 - 850 Watt Fully Modular PSU

  • 80 PLUS® Platinum efficiency
  • Zero RPM Fan Mode
  • Quiet, efficient operation
  • Easy Installation

QuickFind: 788620

Mfr part code: CP-9020138-UK

£ 176.49  inc. vat

£ 147.07 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.