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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 57

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

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

£66.67

£49.99 inc vat

£41.66 ex vat

You save £16.68

Novatech 750W ATX Power Supply
750W, Unrated, Non-Modular, 1 Year Warranty
15 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

 

Novatech 850W ATX Power Supply
850W, Unrated, Non-Modular, 1 Year Warranty
1 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 VS Series VS550 ATX Power Supply
550W, 80 PLUS, Non-Modular, 3 Year Warranty
9 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-VS5502
Manf Code: CP-9020171-UK

£39.98 inc vat

£33.32 ex vat

 

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

 

Cooler Master V1300 80 Plus Platinum Power Supply
1300W, 80 Plus Platinum, Fully Modular, 100% Japanese 105°C Capacitors, Zero RPM Mode, 10 year Warranty
29 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CM-V1300P
Manf Code: MPZ-D001-AFBAPV-UK

£299.99

£164.99 inc vat

£137.49 ex vat

You save £135.00

EVGA SuperNOVA 750 G3 Power Supply
80 PLUS Gold certified, Fully Modular, NVIDIA SLI and AMD Crossfire Ready, 10 Year warranty
17 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-G3750
Manf Code: 220-G3-0750-X3

£129.98

£119.99 inc vat

£99.99 ex vat

You save £10.00

BeQuiet! System Power 9 500W Power Supply
500W, 80 Plus Bronze, Non-Modular, Active PFC, 120mm Silent Wings Fan
6 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN246
Manf Code: BN246

£45.98 inc vat

£38.32 ex vat

 

Corsair VS Series VS450 ATX Power Supply
450W, 80 PLUS, Non-Modular, 3 Year Warranty
3 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

 

Corsair HXi Series HX850I ATX Power Supply
850W, 80 PLUS Platinum, Fully-Modular, Corsair Link Enabled, 7 Year Warranty
1 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-HX850I
Manf Code: CP-9020073-UK

£195.11 inc vat

£162.59 ex vat

 

Corsair RMi Series RM750i ATX Power Supply
750W, 80 PLUS Gold, Fully-Modular, Corsair Link Enabled, 7 Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-750I
Manf Code: CP-9020082-UK

£140.00 inc vat

£116.67 ex vat

 

Corsair HX Series™ HX850 — 850 Watt 80 PLUS® Platinum Certified Fully Modular PSU
850 Watt, Fully Modular, 80 Plus Platinum, Low Profile Sleeved Cables
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-HX850F
Manf Code: CP-9020138-UK

£147.49 inc vat

£122.91 ex vat

 

Corsair CX550 550W 80 Plus Bronze Power Supply
550W, 80 Plus Bronze, Non-Modular, Active PFC, Thermally Controlled 120mm Fan, 5-Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-CX550
Manf Code: CP-9020121-UK

£49.99 inc vat

£41.66 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
16 in stock More information about stock Next Day Delivery only £5.99*

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

£109.99 inc vat

£91.66 ex vat

 

Be Quiet! BN226 SFX Power 2 SFX Power Supply 300W 80 PLUS Bronze Non-Modular PSU
Its design supports the latest technologies and efficiency standards, while providing solid voltages and enough power to support a discrete PCIe graph
9 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN226
Manf Code: BN226

£49.98 inc vat

£41.65 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
9 in stock More information about stock Next Day Delivery only £5.99*

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

£129.98 inc vat

£108.32 ex vat

 

*B-stock item-90 days warranty*EVGA 450 BT 80+ BRONZE 450W Power Supply
450W 80+ Bronze, Non-Modular, 120mm Fan, 150mm Length
5 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: B-450BRO
Manf Code: B-100-BT-0450-K3

£44.99

£37.51 inc vat

£31.26 ex vat

You save £7.48

Corsair VS Series VS650 ATX Power Supply
650W, 80 PLUS, Non-Modular, 3 Year Warranty
4 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-VS6502
Manf Code: CP-9020172-UK

£45.98 inc vat

£38.32 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
2 in stock More information about stock Next Day Delivery only £5.99*

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

£101.99 inc vat

£84.99 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
2 in stock More information about stock Next Day Delivery only £5.99*

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

£103.73 inc vat

£86.44 ex vat

 

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

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

£101.99 inc vat

£84.99 ex vat

 

Be quiet Dark Power Pro 11 550W 80 Plus Platinum Semi-Modular Power Supply
550W, 80 Plus Platinum, Semi-Modular, Virtually inaudible operation, 5 Year Warranty.
1 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN250
Manf Code: BN250

£136.49

£129.97 inc vat

£108.31 ex vat

You save £6.52

BeQuiet! Straight Power 11 650W Power Supply
650W, 80 Plus Gold, Fully Modular, up to 17.22 dBA, 5-Year Warranty
1 in stock More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN282
Manf Code: BN282

£104.99 inc vat

£87.49 ex vat

 

BeQuiet! Straight Power 11 750W Power Supply
750W, 80 Plus Gold, Fully Modular, up to 17.22 dBA, 5-Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN283
Manf Code: BN283

£109.99 inc vat

£91.66 ex vat

 

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Showing products 1 to 24 of 57 (3 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.