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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.

Showing 1 to 24 of 76

Items per page:
GIGABYTE B700H ATX Power Supply
700W, 80 PLUS Bronze, Semi-Modular, 5 Year Warranty
39 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: GIG-B700H
Manf Code: GP-B700H

£66.67

£52.99 inc vat

£44.16 ex vat

You save £13.68

Novatech 850W Power Station V2 Black Edition ATX Power Supply/PSU
850W, 80 PLUS Bronze, Semi-Modular, 2 Year Warranty
50+ in stock More information about stock Next Day Delivery only £5.99*

Stock Code: NOV-PSB852
Manf Code: NOV-PSB852

£84.98

£69.59 inc vat

£57.99 ex vat

You save £15.40

Novatech 1000W Power Station V2 Black Edition ATX Power Supply
1000W, 80 PLUS Bronze, Semi-Modular, 2 Year Warranty
50 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: NOV-PSB102
Manf Code: NOV-PSB102

£77.99 inc vat

£64.99 ex vat

 

CORSAIR TX650M 650W 80 Plus Gold Power Supply
650W, 80 Plus Gold, Semi-Modular, All Japanese Capacitors, 120mm Rifle bearing fan, 7-Year Warranty
6 in stock More information about stock Next Day Delivery only £5.99*

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

£71.99 inc vat

£59.99 ex vat

 

Cooler Master MasterWatt 550 Bronze Rated Power Supply
550W, 80plus Bronze, Semi-fanless, Modular, UK Cable
1 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CM-MAWA550
Manf Code: MPX-5501-AMAAB-UK

£54.98 inc vat

£45.82 ex vat

 

CORSAIR TX750M 750W 80 Plus Gold Power Supply
750W, 80 Plus Gold, Semi-Modular, All Japanese Capacitors, 120mm Rifle bearing fan, 7-Year Warranty
3 in stock More information about stock Next Day Delivery only £5.99*

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

£86.99

£79.00 inc vat

£65.83 ex vat

You save £7.99

Gigabyte AORUS P750W 80+ GOLD Fully Modular Power Supply
750W, Fully Modular, 80 Plus Gold, 135mm Bouble Ball bearing Fan, Active PFC, Flat Black Cables
2 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: GIG-P750W
Manf Code: GP-AP750GM-UK

£99.98 inc vat

£83.32 ex vat

 

Cooler Master MasterWatt 750 Bronze Rated Power Supply
750W, 80plus Bronze, Semi-fanless, Modular, UK Cable
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: CM-MAWA750
Manf Code: MPX-7501-AMAAB-UK

£76.70 inc vat

£63.92 ex vat

 

CORSAIR RM Series RM750 80 PLUS Gold Fully Modular ATX Power Supply
750W, 80 Plus Gold, Fully Modular, 140mm Rifle Fan, Zero RPM mode, 105°C Rated Capacitors, 10 Year Warranty
Stock Due Tomorrow More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-RM750F
Manf Code: CP-9020195-UK

£89.99 inc vat

£74.99 ex vat

 

BeQuiet! pure power 11 400W CM PSU/Power Supply
400W, Semi-Modular, 80 Plus Gold, up to 13.9dBA, 120mm Fan, Rifle Bearing, Active PFC, 5 Year Warranty
Dispatches within 2 - 4 Days More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN296
Manf Code: BN296

£59.99

£54.98 inc vat

£45.82 ex vat

You save £5.00

SeaSonic SS-500ES 500W ATX/PS2 Power Supply - 500W 80 PLUS Bronze Certified Non Modular PSU OEM
18 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: SS-500ES
Manf Code: SS-500ES

£91.22 inc vat

£76.02 ex vat

 

Corsair CX Series CX650M ATX Power Supply
650W, 80 PLUS Bronze, Semi-Modular, 5 Year Warranty
9 in stock More information about stock Next Day Delivery only £5.99*

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

£77.05

£64.98 inc vat

£54.15 ex vat

You save £12.07

CORSAIR TX850M 850W 80 Plus Gold Power Supply
850W, 80 Plus Gold, Semi-Modular, All Japanese Capacitors, 140mm Rifle bearing fan, 7-Year Warranty
7 in stock More information about stock Next Day Delivery only £5.99*

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

£89.99 inc vat

£74.99 ex vat

 

CORSAIR TX550M 550W 80 Plus Gold Power Supply
550W, 80 Plus Gold, Semi-Modular, All Japanese Capacitors, 120mm Rifle bearing fan, 7-Year Warranty
7 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-TX550M
Manf Code: CP-9020133-UK

£64.99 inc vat

£54.16 ex vat

 

BeQuiet! System Power 9 600W Power Supply
80 Plus Bronze, 600w, Non-Modular, Temperature Controlled 120mm fan, 3 Year Warranty
5 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN247
Manf Code: BN247

£56.99 inc vat

£47.49 ex vat

 

CORSAIR RM Series RM850 80 PLUS Gold Fully Modular ATX Power Supply
850W, 80 Plus Gold, Fully Modular, 140mm Rifle Fan, Zero RPM mode, 105°C Rated Capacitors, 10 Year Warranty
4 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-RM850F
Manf Code: CP-9020196-UK

£99.98 inc vat

£83.32 ex vat

 

NZXT E650 650W E Series Digital PSU/Power Supply
650W, 80 Plus Gold, Fully Modular, 0 RPM Mode, Cam Powered
4 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: NZX-E650WG
Manf Code: NP-1PM-E650A-UK

£119.99

£89.99 inc vat

£74.99 ex vat

You save £30.00

Cooler Master MasterWatt 650 Bronze Rated Power Supply
650W, 80plus Bronze, Semi-fanless, Modular, UK Cable
2 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CM-MAWA650
Manf Code: MPX-6501-AMAAB-UK

£64.99 inc vat

£54.16 ex vat

 

BitFenix Alchemy 2.0 PSU Cable Kit EVG-Series - Red
Modular Cable Kit for EVGA and Super Flower Power Supplies
1 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: BIT-A2EVR
Manf Code: BFX-ALC-EVGRR-RP

£79.99 inc vat

£66.66 ex vat

 

EVGA 500B ATX Power Supply
500W, 80 PLUS Bronze, Non-Modular, 3 Year Warranty
1 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-500B
Manf Code: 100-B1-0500-K3

£54.34 inc vat

£45.28 ex vat

 

BeQuiet! pure power 11 500W CM PSU/Power Supply
500W, Semi-Modular, 80 Plus Gold, up to 18.8dBA, 120mm Fan, Rifle Bearing, Active PFC, 5 Year Warranty
1 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN297
Manf Code: BN297

£64.99 inc vat

£54.16 ex vat

 

BitFenix Alchemy 2.0 PSU Cable Kit EVG-Series - Black & Yellow
Modular Cable Kit for EVGA and Super Flower Power Supplies
1 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: BIT-A2EVKY
Manf Code: BFX-ALC-EVGKY-RP

£79.99 inc vat

£66.66 ex vat

 

BitFenix Alchemy 2.0 PSU Cable Kit EVG-Series - Blue
Modular Cable Kit for EVGA and Super Flower Power Supplies
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: BIT-A2EVL
Manf Code: BFX-ALC-EVGBB-RP

£79.99 inc vat

£66.66 ex vat

 

BitFenix Alchemy 2.0 PSU Cable Kit EVG-Series - NVIDIA Green
Modular Cable Kit for EVGA and Super Flower Power Supplies
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: BIT-A2EVNG
Manf Code: BFX-ALC-EVGNV-RP

£79.99 inc vat

£66.66 ex vat

 

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Showing products 1 to 24 of 76 (4 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.