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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 153

Items per page:
FSP 250W Flex TX 85+ Full Range Power Supply
250W, Flex ATX, 80 Plus Bronze
50+ in stock More information about stock Next Day Delivery only £5.99*

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

£32.14 inc vat

£26.78 ex vat

 

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

 

Novatech 500W ATX Power Supply
500W, Unrated, Non-Modular, 1 Year Warranty
50+ in stock More information about stock Next Day Delivery only £5.99*

Stock Code: NOV-PSU500
Manf Code: NOV-PSU500

£22.99 inc vat

£19.16 ex vat

 

Cooler Master Masterwatt Lite 500W 80 PLus White Non-Modular PSU
500W, 80 Plus White, Active PFC, OCP/OVP/OPP/OTP/SCP/UVP, Silent 120mm Fan
50 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CM-MWL5V2
Manf Code: MPX-5001-ACABW-KS

£39.98

£34.98 inc vat

£29.15 ex vat

You save £5.00

Novatech 750W ATX Power Supply
750W, Unrated, Non-Modular, 1 Year Warranty
21 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: NOV-PSU75
Manf Code: AD-E750AE-A6

£29.99 inc vat

£24.99 ex vat

 

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

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

£66.67

£51.98 inc vat

£43.32 ex vat

You save £14.69

Novatech 750W Power Station V2 Black Edition ATX Power Supply
750W, 80 PLUS Bronze, Semi-Modular, 2 Year Warranty
18 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: NOV-PSB752
Manf Code: NOV-PSB752

£54.94 inc vat

£45.78 ex vat

 

Novatech 850W ATX Power Supply
850W, Unrated, Non-Modular, 1 Year Warranty
11 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: NOV-PSU85
Manf Code: AD-E850AE-A6

£31.19 inc vat

£25.99 ex vat

 

CORSAIR RMx Series RM850x (2018) 80 PLUS Gold Fully Modular ATX Power Supply
850W, 80 Plus Gold, Fully Modular, 100% Japanese 105°C Capacitors, Zero RPM Mode, 10 year Warranty
10 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-RM850X
Manf Code: CP-9020180-UK

£119.99

£99.98 inc vat

£83.32 ex vat

You save £20.00

RS 60W 1 Output Switch Mode Desktop Power Supply
9 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: NOV-60WSIN
Manf Code: L60A12-PIJ

£17.99 inc vat

£14.99 ex vat

 

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

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

£108.86 inc vat

£90.72 ex vat

 

CORSAIR RMx Series RM750x (2018) 80 PLUS Gold Fully Modular ATX Power Supply
750W, 80 Plus Gold, Fully Modular, 100% Japanese 105°C Capacitors, Zero RPM Mode, 10 year Warranty
7 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-RM750X
Manf Code: CP-9020179-UK

£104.99

£99.98 inc vat

£83.32 ex vat

You save £5.00

Corsair VS Series VS450 ATX Power Supply
450W, 80 PLUS, Non-Modular, 3 Year Warranty
7 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-VS4502
Manf Code: CP-9020170-UK

£34.98 inc vat

£29.15 ex vat

 

NZXT E650 650W E Series Digital PSU/Power Supply
650W, 80 Plus Gold, Fully Modular, 0 RPM Mode, Cam Powered
6 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

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

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

£74.99 inc vat

£62.49 ex vat

 

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

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

£62.84 inc vat

£52.37 ex vat

 

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

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

£68.99 inc vat

£57.49 ex vat

 

Corsair CX Series CX650M ATX Power Supply
650W, 80 PLUS Bronze, Semi-Modular, 5 Year Warranty
3 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

Cooler Master Masterwatt Lite 700W 80 Plus White Non-Modular PSU
700W, 80 Plus White, Active PFC, OCP/OVP/OPP/OTP/SCP/UVP, Silent 120mm Fan
3 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CM-MWL7V2
Manf Code: MPX-7001-ACABW-KS

£49.98 inc vat

£41.65 ex vat

 

Corsair RMi Series RM1000i ATX Power Supply
1000W, 80 PLUS Gold, Fully-Modular, Corsair Link Enabled, 7 Year Warranty
2 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-1000I
Manf Code: CP-9020084-UK

£169.98

£149.99 inc vat

£124.99 ex vat

You save £19.99

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
2 in stock 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

Cooler Master MasterWatt 550 Bronze Rated Power Supply
550W, 80plus Bronze, Semi-fanless, Modular, UK Cable
2 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

 

Cooler Master Masterwatt Lite 600W 80 PLus White Non-Modular PSU
600W, 80 Plus White, Active PFC, OCP/OVP/OPP/OTP/SCP/UVP, Silent 120mm Fan
2 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CM-MWL6V2
Manf Code: MPX-6001-ACABW-KS

£47.99

£40.98 inc vat

£34.15 ex vat

You save £7.01

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Showing products 1 to 24 of 153 (7 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.