Twitter
Facebook
You Tube
Blog
Forum

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 23 of 23

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

 

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
24 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
16 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

 

Corsair VS Series VS450 ATX Power Supply
450W, 80 PLUS, Non-Modular, 3 Year Warranty
4 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

 

Cooler Master Masterwatt Lite 400W 80 PLus White Non-Modular PSU
400W, 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-MWL4V2
Manf Code: MPX-4001-ACABW-KS

£39.47 inc vat

£32.89 ex vat

 

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

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

£44.99 inc vat

£37.49 ex vat

 

Novatech 850W ATX Power Supply
850W, Unrated, Non-Modular, 1 Year Warranty
3 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 CX550 550W 80 Plus Bronze Power Supply
550W, 80 Plus Bronze, Non-Modular, Active PFC, Thermally Controlled 120mm Fan, 5-Year Warranty
1 in stock 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 VS Series VS550 ATX Power Supply
550W, 80 PLUS, Non-Modular, 3 Year Warranty
1 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

 

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
1 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

*B-stock item-90 days warranty*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
1 in stock More information about stock Next Day Delivery only £5.99*

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

£39.98

£29.90 inc vat

£24.92 ex vat

You save £10.08

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
Dispatches within 1 - 3 Days 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

 

Be Quiet! BN228 TFX Power 2 TFX 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
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN228
Manf Code: BN228

£49.98 inc vat

£41.65 ex vat

 

BeQuiet! System Power 9 500W Power Supply
500W, 80 Plus Bronze, Non-Modular, Active PFC, 120mm Silent Wings Fan
Ordered Upon Request 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

 

BeQuiet! pure power 11 400W PSU/Power Supply
400W, Non-Modular, 80 Plus Gold, up to 14.9dBA, 120mm Fan, Rifle Bearing, Active PFC, 5 Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: BQ-BN292
Manf Code: BN292

£49.99 inc vat

£41.66 ex vat

 

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
Dispatches within 1 - 3 Days 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

 

Only available when in stock

Corsair CX450 450W 80 Plus Bronze Power Supply
450W, 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-CX450
Manf Code: CP-9020120-UK

£49.98 inc vat

£41.65 ex vat

 

EVGA 500 BR, 80+ BRONZE 500W Power Supply
500W, 80 PLus Bronze, Non-Modular, 120mm Fan, Active PFC, 3-Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-500WBR
Manf Code: 100-BR-0500-K3

£49.98

£44.99 inc vat

£37.49 ex vat

You save £4.99

EVGA 450 BR, 80+ BRONZE 450W Power Supply
450W, 80 PLus Bronze, Non-Modular, 120mm Fan, Active PFC, 3-Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-W450BR
Manf Code: 100-BR-0450-K3

£46.98 inc vat

£39.15 ex vat

 

Gigabyte PB500 80 Plus Bronze 500W Non-Modular Power Supply
500W, 80 Plus Bronze, Non-Modular, 120mm Silent Fan, 3 Year Warranty
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: GIG-PB500
Manf Code: GP-PB500

£44.99 inc vat

£37.49 ex vat

 

Gigabyte PW400 400W 80 Plus White Non Modular Power Supply
400W. 80 Plus White, Non-Modular, Active PFC, ATX Form Factor
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: GIG-PW400
Manf Code: GP-PW400-UK

£32.99 inc vat

£27.49 ex vat

 

Phanteks Power Combo Device  - 2 PSU to 1 Motherboard PH-PWCOB_2P1M
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: PTK-POWCOM
Manf Code: PH-PWCOB_2P1M

£37.99 inc vat

£31.66 ex vat

 

Thermaltake Smart RGB 600W Non-Modular 80 Plus White ATX Power Supply
600W, Non-Modular, 80 Plus White, 120mm RGB Fan, Active PFC, 230Vac
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: TT-SRGB600
Manf Code: PS-SPR-0600NHSAWK-1

£49.98 inc vat

£41.65 ex vat

 

Novatech Live Chat

Need help finding a product or have a technical question?
Our experts are on hand to answer any questions. Chat to them right now!

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.