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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 49 to 72 of 140

Items per page:
EVGA SuperNOVA 650 G1+, 80 Plus Gold 650W, Fully Modular, FDB Fan, 10 Year Warranty
650W, Fully Modular, 80 Plus Gold, 135mm FDB Fan, 180mm Length, 10 Year Warranty, 100% Japanese Capacitors
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-650G1P
Manf Code: 120-GP-0650-X3

£89.99 inc vat

£74.99 ex vat

 

EVGA 650 GQ ATX Power Supply
650W, 80 PLUS Gold, Semi-Modular, 5 Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-650GQ
Manf Code: 210-GQ-0650-V3

£89.99 inc vat

£74.99 ex vat

 

EVGA 700 BR, 80+ BRONZE 700W Power Supply
700W, 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-700WBR
Manf Code: 100-BR-0700-K3

£61.98 inc vat

£51.65 ex vat

 

EVGA SuperNOVA 750 G1+, 80 Plus Gold 750W, Fully Modular, FDB Fan, 10 Year Warranty
750W, Fully Modular, 80 Plus Gold, 135mm FDB Fan, 180mm Length, 10 Year Warranty, 100% Japanese Capacitors
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-750G1P
Manf Code: 120-GP-0750-X3

£104.99 inc vat

£87.49 ex vat

 

EVGA 850 GQ ATX Power Supply
850W, 80 PLUS Gold, Semi-Modular, 5 Year Warranty
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-850GQ
Manf Code: 210-GQ-0850-V3

£126.00 inc vat

£105.00 ex vat

 

EVGA SuperNOVA 850 P2 ATX Power Supply
850W, 80 PLUS Platinum, Fully-Modular, 10 Year Warranty
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-850P2
Manf Code: 220-P2-0850-X3

£179.99 inc vat

£149.99 ex vat

 

EVGA 650W B3 80+ Bronze Fully Modular Power Supply
650W 80 Plus Bronze, Fully Modular, EVGA Eco Mode, 150mm Length, 5-Year Warranty
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-B365V3
Manf Code: 220-B3-0650-V3

£81.14 inc vat

£67.62 ex vat

 

EVGA 750W B3 80+ Bronze Fully Modular Power Supply
750W 80 Plus Bronze, Fully Modular, EVGA Eco Mode, 160mm Length, 5-Year Warranty
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-B375V3
Manf Code: 220-B3-0750-V3

£89.99

£84.98 inc vat

£70.82 ex vat

You save £5.00

EVGA SuperNOVA 650 G3 Power Supply
80 PLUS Gold certified, Fully Modular, NVIDIA SLI and AMD Crossfire Ready, 7 Year warranty
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-G3650
Manf Code: 220-G3-0650-Y3

£114.98

£109.98 inc vat

£91.65 ex vat

You save £5.00

EVGA SuperNOVA 750 G3 Power Supply
80 PLUS Gold certified, Fully Modular, NVIDIA SLI and AMD Crossfire Ready, 10 Year warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

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

£130.02 inc vat

£108.35 ex vat

 

EVGA SuperNOVA 850 G3 Power Supply
80 PLUS Gold certified, Fully Modular, NVIDIA SLI and AMD Crossfire Ready, 10 Year warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-G3850
Manf Code: 220-G3-0850-X3

£145.02 inc vat

£120.85 ex vat

 

EVGA SuperNOVA 450GM 450W Fully Modular SFX Power Supply
450W, Fully Modular, 80 Plus Gold, SFX, 7 Year Warranty, ECO Mode
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-GM450W
Manf Code: 123-GM-0450-Y3

£74.99 inc vat

£62.49 ex vat

 

EVGA SuperNOVA 550GM 550W Fully Modular SFX Power Supply
550W, Fully Modular, 80 Plus Gold, SFX, 7 Year Warranty, ECO Mode
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-GM550W
Manf Code: 123-GM-0550-Y3

£89.99 inc vat

£74.99 ex vat

 

EVGA SuperNOVA 650GM 650W Fully Modular SFX Power Supply
650W, Fully Modular, 80 Plus Gold, SFX, 7 Year Warranty, ECO Mode
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-GM650W
Manf Code: 123-GM-0650-Y3

£109.98 inc vat

£91.65 ex vat

 

Gigabyte AORUS P850W 80+ GOLD Fully Modular Power Supply
850W, Fully Modular, 80 Plus Gold, 135mm Bouble Ball bearing Fan, Active PFC, Flat Black Cables
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: GIG-P850W
Manf Code: GP-AP850GM-UK

£124.98 inc vat

£104.15 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

 

GIGABYTE G750H ATX Power Supply
750W, 80 PLUS Gold, Semi-Modular, 5 Year Warranty
Ordered Upon Request More information about stock Next Day Delivery only £5.99*

Stock Code: GIG-G750H
Manf Code: GP-G750H

£91.14

£86.90 inc vat

£72.42 ex vat

You save £4.24

Corsair Vengeance Series™ 650M 80 PLUS Silver Power Supply
650W, 80 Plus Silver, 120mm Fan, Semi-Modular, ATX Form Factor, Zero RPM Mode, Five Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-VE650M
Manf Code: CP-9020175-UK

£77.99 inc vat

£64.99 ex vat

 

Corsair Vengeance Series™ 750M 80 PLUS Silver Power Supply
750W, 80 Plus Silver, 120mm Fan, Semi-Modular, ATX Form Factor, Zero RPM Mode, Five Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: CSR-VE750M
Manf Code: CP-9020176-UK

£89.99 inc vat

£74.99 ex vat

 

Corsair VS Series VS550 ATX Power Supply
550W, 80 PLUS, Non-Modular, 3 Year Warranty
Stock Due Tomorrow 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

 

Corsair VS Series VS650 ATX Power Supply
650W, 80 PLUS, Non-Modular, 3 Year Warranty
Stock Due Tomorrow 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

 

EVGA SuperNOVA 1000 G1+, 80 Plus Gold 1000W, Fully Modular, FDB Fan, 10 Year Warranty
1000W, Fully Modular, 80 Plus Gold, 135mm FDB Fan, 180mm Length, 10 Year Warranty, 100% Japanese Capacitors
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-100G1P
Manf Code: 120-GP-1000-X3

£164.98 inc vat

£137.48 ex vat

 

EVGA SuperNOVA 1300 G2 ATX Power Supply
1300W, 80 PLUS Gold, Fully-Modular, 10 Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-1300SN
Manf Code: 120-G2-1300-X3

£224.69 inc vat

£187.24 ex vat

 

EVGA SuperNOVA 1600 P2 ATX Power Supply
1600W, 80 PLUS Platinum, Fully-Modular, 10 Year Warranty
Dispatches within 1 - 3 Days More information about stock Next Day Delivery only £5.99*

Stock Code: EVG-1600P2
Manf Code: 220-P2-1600-X3

£379.99 inc vat

£316.66 ex vat

 

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Showing products 49 to 72 of 140 (6 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.