901W And Above Power Supplies

Upgrade your PC with one of our high-quality, 901W-and-above power supplies. Choose from fully modular units packing more than 1,500 watts of power, backed by 80 PLUS Platinum and even Titanium certifications.

Read more about 901W And Above Power Supplies

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Free Delivery

CORSAIR RM1000x 1000w ATX Power Supply Unit

  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 2.0
  • Warranty: 10 Years

£ 139.98 inc.
vat

SAVE £40.01WAS £179.99

£ 116.65 ex.
vat

SAVE £33.34WAS £149.99
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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Post Primal Deal
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CORSAIR RM1000x SHIFT 1000w ATX Power Supply Unit

  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 10 Years

£ 137.99 inc.
vat

SAVE £42.00WAS £179.99

£ 114.99 ex.
vat

SAVE £35.00WAS £149.99
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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be quiet! PURE POWER 12 M 1000w ATX Power Supply Unit

  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

£ 151.98 inc.
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£ 126.65 ex.
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Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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Cooler Master MWE V2 1250w ATX Power Supply Unit

  • Wattage: 1250w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

£ 169.98 inc.
vat

SAVE £20.01WAS £189.99

£ 141.65 ex.
vat

SAVE £16.67WAS £158.32
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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CORSAIR RM1000e 1000w ATX Power Supply Unit

  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 7 Years

£ 143.97 inc.
vat

SAVE £9.02WAS £152.99

£ 119.97 ex.
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SAVE £7.52WAS £127.49
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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MSI MPG A1000G 1000w ATX Power Supply Unit

  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

£ 157.49 inc.
vat

SAVE £12.49WAS £169.98

£ 131.24 ex.
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SAVE £10.41WAS £141.65
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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CORSAIR SF1000L 1000w SFX Power Supply Unit

  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 7 Years

£ 179.99 inc.
vat

£ 149.99 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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Cooler Master V 1100w SFX Power Supply Unit

  • Wattage: 1100w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

£ 299.99 inc.
vat

£ 249.99 ex.
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Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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be quiet! STRAIGHT POWER 11 1000w ATX Power Supply Unit

  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 2.0
  • Warranty: 5 Years

£ 169.98 inc.
vat

SAVE £25.01WAS £194.99

£ 141.65 ex.
vat

SAVE £20.84WAS £162.49
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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Post Primal Deal
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CORSAIR HX1500i 1500w ATX Power Supply Unit

  • Wattage: 1500w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 10 Years

£ 254.99 inc.
vat

SAVE £46.24WAS £301.23

£ 212.49 ex.
vat

SAVE £38.53WAS £251.02
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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CORSAIR HX1000i 1000w ATX Power Supply Unit

  • Wattage: 1000w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 10 Years

£ 221.98 inc.
vat

£ 184.98 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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Free Delivery

Cooler Master MWE V2 1050w ATX Power Supply Unit

  • Wattage: 1050w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

£ 149.99 inc.
vat

£ 124.99 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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Post Primal Deal
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CORSAIR RM1200x SHIFT 1200w ATX Power Supply Unit

  • Wattage: 1200w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 10 Years

£ 174.99 inc.
vat

SAVE £45.00WAS £219.99

£ 145.82 ex.
vat

SAVE £37.50WAS £183.32
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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Cooler Master V 1300w SFX Power Supply Unit

  • Wattage: 1100w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

£ 329.99 inc.
vat

£ 274.99 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product
Free Delivery

MSI MEG Ai1300P 1300w ATX Power Supply Unit

  • Wattage: 1300w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

£ 283.97 inc.
vat

SAVE £16.02WAS £299.99

£ 236.64 ex.
vat

SAVE £13.35WAS £249.99
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

CORSAIR RM1000x 1000w ATX Power Supply Unit

Free Delivery
  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 2.0
  • Warranty: 10 Years

SKU: CP-9020201-UK

£ 139.98 inc.
vat

SAVE £40.01WAS £179.99

£ 116.65 ex.
vat

SAVE £33.34WAS £149.99
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

CORSAIR RM1000x SHIFT 1000w ATX Power Supply Unit

Post Primal Deal
Free Delivery
  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 10 Years

SKU: CP-9020253-UK

£ 137.99 inc.
vat

SAVE £42.00WAS £179.99

£ 114.99 ex.
vat

SAVE £35.00WAS £149.99
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

be quiet! PURE POWER 12 M 1000w ATX Power Supply Unit

Free Delivery
  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

SKU: BN345

£ 151.98 inc.
vat

£ 126.65 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

Cooler Master MWE V2 1250w ATX Power Supply Unit

Free Delivery
  • Wattage: 1250w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

SKU: MPE-C501-AFCAG-3GUK

£ 169.98 inc.
vat

SAVE £20.01WAS £189.99

£ 141.65 ex.
vat

SAVE £16.67WAS £158.32
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

CORSAIR RM1000e 1000w ATX Power Supply Unit

Free Delivery
  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 7 Years

SKU: CP-9020264-UK

£ 143.97 inc.
vat

SAVE £9.02WAS £152.99

£ 119.97 ex.
vat

SAVE £7.52WAS £127.49
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

MSI MPG A1000G 1000w ATX Power Supply Unit

Free Delivery
  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

SKU: MPG A1000G PCIE5

£ 157.49 inc.
vat

SAVE £12.49WAS £169.98

£ 131.24 ex.
vat

SAVE £10.41WAS £141.65
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

CORSAIR SF1000L 1000w SFX Power Supply Unit

Free Delivery
  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 7 Years

SKU: CP-9020246-UK

£ 179.99 inc.
vat

£ 149.99 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

Cooler Master V 1100w SFX Power Supply Unit

Free Delivery
  • Wattage: 1100w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

SKU: MPZ-B001-SFAP-BUK

£ 299.99 inc.
vat

£ 249.99 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

be quiet! STRAIGHT POWER 11 1000w ATX Power Supply Unit

Free Delivery
  • Wattage: 1000w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 2.0
  • Warranty: 5 Years

SKU: BN285

£ 169.98 inc.
vat

SAVE £25.01WAS £194.99

£ 141.65 ex.
vat

SAVE £20.84WAS £162.49
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

CORSAIR HX1500i 1500w ATX Power Supply Unit

Post Primal Deal
Free Delivery
  • Wattage: 1500w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 10 Years

SKU: CP-9020261-UK

£ 254.99 inc.
vat

SAVE £46.24WAS £301.23

£ 212.49 ex.
vat

SAVE £38.53WAS £251.02
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

CORSAIR HX1000i 1000w ATX Power Supply Unit

Free Delivery
  • Wattage: 1000w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 10 Years

SKU: CP-9020259-UK

£ 221.98 inc.
vat

£ 184.98 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

Cooler Master MWE V2 1050w ATX Power Supply Unit

Free Delivery
  • Wattage: 1050w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

SKU: MPE-A501-AFCAG-3GUK

£ 149.99 inc.
vat

£ 124.99 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

CORSAIR RM1200x SHIFT 1200w ATX Power Supply Unit

Post Primal Deal
Free Delivery
  • Wattage: 1200w
  • Efficiency: 80 PLUS Gold
  • Cable Type: Modular
  • ATX Support: ATX 3.1
  • Warranty: 10 Years

SKU: CP-9020254-UK

£ 174.99 inc.
vat

SAVE £45.00WAS £219.99

£ 145.82 ex.
vat

SAVE £37.50WAS £183.32
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

Cooler Master V 1300w SFX Power Supply Unit

Free Delivery
  • Wattage: 1100w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

SKU: MPZ-D001-SFBP-BUK

£ 329.99 inc.
vat

£ 274.99 ex.
vat

Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
View Product

MSI MEG Ai1300P 1300w ATX Power Supply Unit

Free Delivery
  • Wattage: 1300w
  • Efficiency: 80 PLUS Platinum
  • Cable Type: Modular
  • ATX Support: ATX 3.0
  • Warranty: 10 Years

SKU: MEG AI1300P PCIE5

£ 283.97 inc.
vat

SAVE £16.02WAS £299.99

£ 236.64 ex.
vat

SAVE £13.35WAS £249.99
Full options and terms on Product Page
0% Interest offers available
In Stock- Order now for delivery on Tuesday, 23rd July
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Is a 901W And Above PSU Overkill?

Even though top-tier CPUs and GPUs can on paper consumer hundreds of watts each, real world power consumption is often much lower. In games, for example, the total system power consumption of an RTX 4090-equipped PC is on average 500W. NVIDIA themselves recommend an 850W PSU for an RTX 4090 system, which as a reminder is one of the world's fastest graphics cards. So, you may be asking yourself why you'd need a 1,000W or even a 1,500W power supply. Let's examine some uses cases where 901W-and-above PSUs would come in handy.

Multi-GPU Machines

Most modern games do not support NVIDIA's SLI/NVLink or AMD's Crossfire technologies, which enable the use of multiple graphics cards to render out a single image. However, the multi-GPU dream is alive and well in professional applications and workloads. It's not that uncommon for a high-spec workstation to be equipped with not one but two, three, or even for ultra-high-end graphics card to, say, shorten the training time of a deep neural network. This will, of course, necessitate a seriously high-wattage power supply.

Cooling and Noise

Let's say you were looking to build a gaming PC with an average power consumption of 400W. A 500W PSU could technically handle this, but it'd put the power supply under quite a heavy load. Its cooling solution is designed to be able to dissipate 500 watts' worth of heat, so 400W is getting up there. A 1,000W PSU, on the other hand, is built to withstand much higher wattages. So at these relatively low wattages, a 1,000W PSU wouldn't even break a sweat. A 1,000W PSU would run cooler and, in turn, produce less noise compared to a 500W unit in this scenario. At such low usage, a 1,000W PSU's fan may not even spin up.

Overclocking

Then there's overclocking, the process of raising a component's frequencies higher than its stock, from-the-factory state for extra performance. Most hardware is tuned to hit a performance-per-watt sweet spot out of the box. So to achieve these higher frequencies via overclocking, you have to pump a lot more power into the component. It's not a linear progression, either; a 20% increase in frequency will likely require more than a 20% increase in power. Simply put, efficiency goes out of the window when you overclock. An ultra-high wattage power supply is needed to meet these exponential power requirements, but this isn't going to stop those wanting to push their hardware to the absolute limits.

Upgradability

You may not need a 901W-and-above power supply now, but you may need one in the future. If you've got the budget to spare, it's arguably worth picking up a power supply with a slightly higher wattage than you need. So when it comes time to upgrade to new, more power-hungry hardware, you won't have to also buy a new PSU to power it all, saving you money in the long run.

It's also worth pointing out the fact that these 901W-and-above power supplies are usually 80 PLUS Gold-certified at the minimum, with 80 PLUS Platinum and Titanium (the highest tier) units being readily available, too. As noted on the main PSU page, 80 PLUS is the measure of a PSU's efficiency, not its quality. However, higher efficiency components tend to be of a higher quality as well. Nevertheless, these 901W-and-above power supplies are built to last, with many backed by comprehensive 10-year warranties.

901W And Above Power Supplies at Ebuyer

Here at Ebuyer, we stock a range of 901W-and-above power supplies from all the top brands, including Corsair, Cooler Master, and ASUS.

If you want your new ultra-high wattage power supply by tomorrow, next-day delivery is available. We also offer finance packages for added flexibility. And don't forget the Ebuyer Price Match Promise - we won't be beaten on price.