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Power Supply Unit

The humble computer power supply unit (PSU) is very often overlooked when upgrading or building a PC. However, if the PSU is underpowered for all the components then this can lead to instability or crashes. Modern Graphics Cards especially can require quite a hefty power supply, so ensure you choose one which more than covers the wattage required of all of your components. Then to save on those costly energy bills it's worth going for an 80 Plus™ bronze rated unit.

The 80 Plus™ mark certifies products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load and a power factor of 0.9 or greater at 100% load. Then if you want to keep your cabling tidy, a modular unit helps remove unnecessary clutter and leaves your case interior free and clear.

With Novatech's extensive range of brands ranging from Corsair to BeQuiet!, you'll find a PSU to suit your needs with us.

Check out our range of Power Supply Units below.

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Best selling Power Supplies

Corsair RM Series RM850 2021 850W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Corsair RM Series RM850 (2021) 850W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

10+ in stock

£89.99 inc vat

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Corsair CX Series CX750F RGB 80 PLUS Bronze 750W Fully Modular ATX Power Supply

Corsair CX Series CX750F RGB 80 PLUS Bronze 750W Fully Modular ATX Power Supply

10+ in stock

£66.98 inc vat

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MSI MPG Series A750GFW 80 PLUS Gold Fully Modular ATX Power Supply

MSI MPG Series A750GFW 80 PLUS Gold Fully Modular ATX Power Supply

10+ in stock

£99.98 inc vat

View Details
Corsair RMx White Series RM750x 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Corsair RMx White Series RM750x 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Only 9 left in stock

£109.99 inc vat

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CORSAIR TX750M 750W 80 Plus Gold Power Supply

CORSAIR TX750M 750W 80 Plus Gold Power Supply

10+ in stock

£67.98 inc vat

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Corsair CV Series CV650 — 650 Watt 80 Plus Bronze Certified PSU

Corsair CV Series CV650 — 650 Watt 80 Plus Bronze Certified PSU

Ordered Upon Request

£59.99 inc vat

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Cooler Master MWE 700 WHITE 230V - V2 Power Supply

Cooler Master MWE 700 WHITE 230V - V2 Power Supply

10+ in stock

£40.00 inc vat

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Corsair RMx Series RM550x 550W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Corsair RMx Series RM550x 550W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Only 3 left in stock

£89.99 inc vat

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BeQuiet! SFX L POWER 600W 80 PLUS Gold SFX L Power Supply / PSU

BeQuiet! SFX L POWER 600W 80 PLUS Gold SFX L Power Supply / PSU

Only 1 left in stock

£119.99 inc vat

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NZXT C Series 750W 80 Plus Gold Modular ATX Power Supply

NZXT C Series 750W 80 Plus Gold Modular ATX Power Supply

Dispatches within 1 - 3 Days

£99.98 inc vat

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be quiet! Pure Power 11 FM 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

be quiet! Pure Power 11 FM 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Only 3 left in stock

£94.99 inc vat

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EVGA SuperNova G1plus 2000W 80 PLUS Gold ATX Power Supply

EVGA SuperNova G1+ 2000W 80 PLUS Gold ATX Power Supply

Ordered Upon Request

£399.98 inc vat

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CORSAIR TX850M 850W 80 Plus Gold Power Supply

CORSAIR TX850M 850W 80 Plus Gold Power Supply

850W, 80 Plus Gold, Semi-Modular, All Japanese Capacitors, 140mm Rifle bearing fan, 7-Year Warranty
trustpilot logo 5 star product rating
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-TX850M
Manf Code: CP-9020130-UK

£69.98 inc vat

£58.32 ex vat

 

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Stock Code: CSR-TX850M
Manf Code: CP-9020130-UK

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Corsair TX-M Series TX550M 550W 80 PLUS Gold Semi-Modular Power Supply / PSU

Corsair TX-M Series TX550M 550W 80 PLUS Gold Semi-Modular Power Supply / PSU

550W, 80 PLUS Gold, Semi-Modular, 105°C Capacitors, 120mm Fan, 7 Year Warranty
trustpilot logo 5 star product rating
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-TX5502
Manf Code: CP-9020228-UK

£39.98 inc vat

£33.32 ex vat

 

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Stock Code: CSR-TX5502
Manf Code: CP-9020228-UK

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Corsair RM Series RM850 (2021) 850W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Corsair RM Series RM850 (2021) 850W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

850W, 80 PLUS Gold, Fully-Modular, 105°C Capacitors, 140mm Fan, 10 Year Warranty
trustpilot logo 5 star product rating
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-RM85V2
Manf Code: CP-9020235-UK

£89.99 inc vat

£74.99 ex vat

 

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Stock Code: CSR-RM85V2
Manf Code: CP-9020235-UK

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Seasonic FOCUS GX 850W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Seasonic FOCUS GX 850W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

850W, 80 PLUS Gold, Fully-Modular, 120mm Fan, 10 Year Warranty
Only 5 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: SS-FGX850
Manf Code: FOCUS-GX-850

£114.98

£99.98 inc vat

£83.32 ex vat

You save £15.00

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Stock Code: SS-FGX850
Manf Code: FOCUS-GX-850

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CORSAIR TX750M 750W 80 Plus Gold Power Supply

CORSAIR TX750M 750W 80 Plus Gold Power Supply

750W, 80 Plus Gold, Semi-Modular, All Japanese Capacitors, 120mm Rifle bearing fan, 7-Year Warranty
trustpilot logo 5 star product rating
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-TX750M
Manf Code: CP-9020131-UK

£82.79

£67.98 inc vat

£56.65 ex vat

You save £14.81

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Stock Code: CSR-TX750M
Manf Code: CP-9020131-UK

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Corsair CX-M Series 450W 80 PLUS Bronze Semi-Modular ATX Power Supply

Corsair CX-M Series 450W 80 PLUS Bronze Semi-Modular ATX Power Supply

CX450M, 450W, 80 PLUS Bronze, Semi-Modular, 5 Year Warranty
trustpilot logo 4 star product rating
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-CX45M2
Manf Code: CP-9020219-UK

£34.99 inc vat

£29.16 ex vat

 

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Stock Code: CSR-CX45M2
Manf Code: CP-9020219-UK

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Seasonic FOCUS GX 650W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Seasonic FOCUS GX 650W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

650W, 80 PLUS Gold, Fully-Modular, 120mm Fan, 10 Year Warranty
Only 2 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: SS-FGX650
Manf Code: FOCUS-GX-650

£84.98

£79.99 inc vat

£66.66 ex vat

You save £4.99

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Stock Code: SS-FGX650
Manf Code: FOCUS-GX-650

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Corsair RM Series RM650 650W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Corsair RM Series RM650 650W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

650W, 80 PLUS Gold, Fully-Modular, 105°C Capacitors, 135mm Fan, 10 Year Warranty
trustpilot logo 5 star product rating
Dispatches within 1 - 3 Days More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-RM650F
Manf Code: CP-9020194-UK

£84.98 inc vat

£70.82 ex vat

 

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Only available when in stock

Stock Code: CSR-RM650F
Manf Code: CP-9020194-UK

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Only available when in stock

Corsair CX Series CX750F RGB 80 PLUS Bronze 750W Fully Modular ATX Power Supply

Corsair CX Series CX750F RGB 80 PLUS Bronze 750W Fully Modular ATX Power Supply

750W, 80 PLUS Bronze, Fully Modular, 120mm RGB Fan, 140mm Depth, 5 Year Warranty
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-CX75FR
Manf Code: CP-9020218-UK

£89.99

£66.98 inc vat

£55.82 ex vat

You save £23.00

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Stock Code: CSR-CX75FR
Manf Code: CP-9020218-UK

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MSI MPG Series A750GFW 80 PLUS Gold Fully Modular ATX Power Supply

MSI MPG Series A750GFW 80 PLUS Gold Fully Modular ATX Power Supply

750W, 80 Plus Gold, Fully Modular, 100% Japanese 105°C Capacitors, Supports Nvidia RTX 3000 GPU's, 10 Year Warranty
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: MSI-A750GF
Manf Code: 306-7ZP0B18-CE0

£99.98 inc vat

£83.32 ex vat

 

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Stock Code: MSI-A750GF
Manf Code: 306-7ZP0B18-CE0

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Corsair CX650M 650W 80 PLUS Bronze Semi-Modular ATX Power Supply

Corsair CX650M 650W 80 PLUS Bronze Semi-Modular ATX Power Supply

650W, 80 PLUS Bronze, Semi-Modular, 5 Year Warranty
trustpilot logo 5 star product rating
Only 10 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-CX650M
Manf Code: CP-9020103-UK

£64.99 inc vat

£54.16 ex vat

 

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Stock Code: CSR-CX650M
Manf Code: CP-9020103-UK

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be quiet! System Power 9 500W 80 PLUS Bronze ATX Power Supply / PSU

be quiet! System Power 9 500W 80 PLUS Bronze ATX Power Supply / PSU

500W, 80 PLUS Bronze, Non-Modular, 120mm Fan, 3 Year Warranty
Only 2 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: BQ-BN246
Manf Code: BN246

£46.99 inc vat

£39.16 ex vat

 

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Stock Code: BQ-BN246
Manf Code: BN246

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Novatech 750W ATX Power Supply

Novatech 750W ATX Power Supply

750W, Unrated, Non-Modular, 1 Year Warranty
trustpilot logo 4 star product rating
Only 2 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: NOV-ART75
Manf Code: PSU-710

£32.99 inc vat

£27.49 ex vat

 

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Stock Code: NOV-ART75
Manf Code: PSU-710

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Aerocool Cylon 700W 80 Plus White non-Modular PSU

Aerocool Cylon 700W 80 Plus White non-Modular PSU

700W, 80 Plus White, Non-Modular, 120mm Fan, Flat Black Cables,
trustpilot logo 5 star product rating
Only 1 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: AER-100023
Manf Code: ACPW-CN70AKC.11

£39.98 inc vat

£33.32 ex vat

 

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Stock Code: AER-100023
Manf Code: ACPW-CN70AKC.11

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Corsair TX650M 650W 80 PLUS Gold Semi-Modular ATX Power Supply

Corsair TX650M 650W 80 PLUS Gold Semi-Modular ATX Power Supply

650W, 80 PLUS Gold, Semi-Modular, 7 Year Warranty
trustpilot logo 5 star product rating
Only 1 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-TX650M
Manf Code: CP-9020132-UK

£82.99 inc vat

£69.16 ex vat

 

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Stock Code: CSR-TX650M
Manf Code: CP-9020132-UK

View Details
Seasonic FOCUS GX 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Seasonic FOCUS GX 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

750W, 80 PLUS Gold, Fully-Modular, 120mm Fan, 10 Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery from £5.99*

Stock Code: SS-FGX750
Manf Code: FOCUS-GX-750

£94.99

£83.99 inc vat

£69.99 ex vat

You save £11.00

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Only available when in stock

Stock Code: SS-FGX750
Manf Code: FOCUS-GX-750

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Only available when in stock

CoolerMaster MWE GOLD 750W ATX Power Supply

CoolerMaster MWE GOLD 750W ATX Power Supply

750W, 80 PLUS Gold, Non-Modular, 5 Year Warranty, 140mm Depth
trustpilot logo 4 star product rating
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CM-MWEG75
Manf Code: MPY-7501-ACAAG-B3

£69.98

£59.99 inc vat

£49.99 ex vat

You save £10.00

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Stock Code: CM-MWEG75
Manf Code: MPY-7501-ACAAG-B3

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Cooler Master MWE 700 WHITE 230V - V2 Power Supply

Cooler Master MWE 700 WHITE 230V - V2 Power Supply

700W, 80 Plus White, Non-Modular, up to 41dBA, 120mm Fan, 2400RPM,
trustpilot logo 5 star product rating
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CM-MWE700W
Manf Code: MPE-7001-ACABW-UK

£40.00 inc vat

£33.33 ex vat

 

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Stock Code: CM-MWE700W
Manf Code: MPE-7001-ACABW-UK

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FSP 250W Flex ATX 85+ Full Range Power Supply

FSP 250W Flex ATX 85+ Full Range Power Supply

250W, Flex ATX, 80 Plus Bronze
trustpilot logo 3 star product rating
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: FSP-250GUB
Manf Code: 9PA250CX05

£32.99 inc vat

£27.49 ex vat

 

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Stock Code: FSP-250GUB
Manf Code: 9PA250CX05

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Seasonic ES2 600W 80 PLUS Bronze ATX Power Supply

Seasonic ES2 600W 80 PLUS Bronze ATX Power Supply

600W, 80 PLUS Bronze, ATX
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: SS-600ES2
Manf Code: SSP-600ES2

£69.98 inc vat

£58.32 ex vat

 

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Stock Code: SS-600ES2
Manf Code: SSP-600ES2

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EVGA B5 650W 80 PLUS Bronze Fully Modular ATX Power Supply

EVGA B5 650W 80 PLUS Bronze Fully Modular ATX Power Supply

650W, 80 PLUS Bronze, Fully-Modular, Japanese Capacitors, 5 Year Warranty, 150mm Depth
10+ in stock More information about stock Next Day Delivery from £5.99*

Stock Code: EVG-B5650
Manf Code: 220-B5-0650-V3

£79.98 inc vat

£66.65 ex vat

 

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Stock Code: EVG-B5650
Manf Code: 220-B5-0650-V3

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EVGA W1 600W 80 PLUS White ATX Power Supply

EVGA W1 600W 80 PLUS White ATX Power Supply

600W, 80 PLUS White, 3 Year Warranty, 140mm Depth
trustpilot logo 5 star product rating
Only 9 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: EVG-600W
Manf Code: 100-W1-0600-K3

£45.98 inc vat

£38.32 ex vat

 

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Stock Code: EVG-600W
Manf Code: 100-W1-0600-K3

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Corsair RMx White Series RM750x 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

Corsair RMx White Series RM750x 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU

750W, 80 PLUS Gold, Fully-Modular, 100% 105c Japanese Capacitors, 140mm Fan, 10 Year Warranty
trustpilot logo 5 star product rating
Only 9 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: CSR-RM750W
Manf Code: CP-9020187-UK

£109.99 inc vat

£91.66 ex vat

 

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Stock Code: CSR-RM750W
Manf Code: CP-9020187-UK

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COUGAR GEX750 80 PLUS Gold 750W Fully Modular ATX Power Supply

COUGAR GEX750 80 PLUS Gold 750W Fully Modular ATX Power Supply

750W, 80 PLUS Gold, Fully Modular, 120mm Fan, 105°C Rated Capacitors, 160mm Depth, 5 Year Warranty
trustpilot logo 5 star product rating
Only 9 left in stock More information about stock Next Day Delivery from £5.99*

Stock Code: COU-GEX750
Manf Code: GEX750

£79.99 inc vat

£66.66 ex vat

 

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Stock Code: COU-GEX750
Manf Code: GEX750

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Showing products 1 to 24 of 98 (5 Pages)

Understanding your power supply unit

The power supply unit (PSU) of a computer is often overlooked by our customers when upgrading their PCs. However, while many people prioritise their attention and spending on a motherboard or graphics card, a PSU is just as important. At the end of the day, a power supply unit does what it says on the box – it powers all the components in your computer. If your PSU is underpowered for all the components in a PC, then this can lead to instability or crashes. After all, a high-end graphics card isn’t going to be of much use without the sufficient power to run it.

What to consider when buying a power unit supply

Components such as modern Graphics Cards in particular can require a large power supply, so ensure that you choose a PSU that covers the wattage requirements for all of your components. Intimately knowing your PC build like this will prevent a lot of stress for the future of your PC. Considering details such as the size of your chassis and the correct PSU connections required for your build will help your entire system to run much smoother.

It is recommended that you get a PSU that will be more than powerful enough to reliably operate all a PC’s components. This will also future-proof your system for any potential power-demanding hardware upgrades that you may purchase in the future.

The POWER of a Power Supply Unit

A Power Supply Unit operates within your computer by converting the voltage of the power from the alternating current (AC) into a direct current (DC) to be utilised for the various PC components inside a chassis. This works through a switched-mode power supply that substantially increases the efficiency of converting the electrical power required for your PC.

Make sure to make a note the wattage rating of a computer’s power supply unit before purchasing. This indicates the amount of power that it can provide to your system. A PSU that boasts a higher-wattage will supply more power, with the average desktop power supply providing around 200W – 1800W. However, a PSU’s maximum power will be required to push its limits and effectively run all your computer’s components.

The quality of a power supply unit can be found by looking at its 80 PLUS rating. The 80 Plus™ mark certifies products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load and a power factor of 0.9 or greater at 100% load.

More about Power Supplies

We have a huge range of Power Supplies in stock from all the top brands, including Corsair, EVGA, Bitfenix, BeQuiet and more.

Choosing the right Power Supply for you

The wattage of your Power Supply is very important and will vary on what you are using your PC for. For example if you're running a beastly Gaming PC with a top of the range NVIDIA GeForce GTX 1070 Series Graphics Card, you'll probably wanting to be looking at an 700W+ PSU realistically to ensure smooth, uninterrupted gameplay.

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Head Office - Novatech Ltd, Harbour House, Hamilton Road, Cosham, Portsmouth, PO6 4PU