Account Basket HOME > COMPONENTS> POWER SUPPLIES> FILTER 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 106 SORT BY: Best Selling ITEMS PER PAGE: 24 Best selling Power Supplies Corsair RMx Series RM750x 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU Stock Due Soon £99.98 inc vat VIEW DETAILS ADD TO BASKET Corsair RMx Series RM1000x 1000W 80 PLUS Gold Fully Modular ATX Power Supply / PSU 10+ in stock £169.99 inc vat VIEW DETAILS ADD TO BASKET prev next Corsair RM Series RM850 850W 80 PLUS Gold Fully Modular ATX Power Supply / PSU 850W, 80 PLUS Gold, Fully-Modular, 105°C Capacitors, 135mm Fan, 10 Year Warranty 10+ in stock Next Day Delivery from £5.99* £104.99 inc vat £87.49 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-RM850F Manf Code: CP-9020196-UK Corsair RMx Series RM1000x 1000W 80 PLUS Gold Fully Modular ATX Power Supply / PSU 1000W, 80 PLUS Gold, Fully-Modular, 105°C Japanese Capacitors, 140mm Fan, 10 Year Warranty 10+ in stock Next Day Delivery from £5.99* £169.99 inc vat £141.66 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-1000X Manf Code: CP-9020094-UK Corsair CV Series CV650 — 650 Watt 80 Plus Bronze Certified PSU 650w, 80 Plus Bronze, Non-Modular, 120mm Fan, 3 Year Warranty 10+ in stock Next Day Delivery from £5.99* £49.99 inc vat £41.66 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-CV6502 Manf Code: CP-9020236-UK Corsair CX650M 650W 80 PLUS Bronze Semi-Modular ATX Power Supply 650W, 80 PLUS Bronze, Semi-Modular, 5 Year Warranty 10+ in stock Next Day Delivery from £5.99* £69.98 inc vat £58.32 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-CX650M Manf Code: CP-9020103-UK Corsair CV Series CV450 — 450 Watt 80 Plus Bronze Certified PSU 450w, 80 Plus Bronze, Non-Modular, 120mm Fan, 3 Year Warranty 10+ in stock Next Day Delivery from £5.99* £48.24 inc vat £40.20 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-CV450B Manf Code: CP-9020209-UK CORSAIR TX850M 850W 80 Plus Gold Power Supply 850W, 80 Plus Gold, Semi-Modular, All Japanese Capacitors, 140mm Rifle bearing fan, 7-Year Warranty 10+ in stock Next Day Delivery from £5.99* £106.38 inc vat £88.65 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-TX850M Manf Code: CP-9020130-UK CoolerMaster MWE GOLD 750W ATX Power Supply 750W, 80 PLUS Gold, Non-Modular, 5 Year Warranty, 140mm Depth 10+ in stock Next Day Delivery from £5.99* £69.98 inc vat £58.32 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CM-MWEG75 Manf Code: MPY-7501-ACAAG-B3 be quiet! System Power 9 600W 80 PLUS Bronze ATX Power Supply / PSU 600W, 80 PLUS Bronze, Non-Modular, 120mm Fan, 3 Year Warranty 10+ in stock Next Day Delivery from £5.99* £54.98 inc vat £45.82 ex vat VIEW DETAILS ADD TO BASKET Stock Code: BQ-BN247 Manf Code: BN247 EVGA SuperNOVA G5 850W 80 PLUS Gold Fully Modular ATX Power Supply 850W, 80 PLUS Gold, Fully-Modular, 100% Japanese Capacitors, 10 Year Warranty, 150mm Depth Only 9 left in stock Next Day Delivery from £5.99* £139.99 inc vat £116.66 ex vat VIEW DETAILS ADD TO BASKET Stock Code: EVG-SN85GS Manf Code: 220-G5-0850-X3 Thermaltake Hamburg Pro RGB Series 550W 80 Plus Bronze Certified PSU 550W, 80 Plus Bronze, Non-Modular, Active PFC, UIltra Quiet 120mm fan, intelligent RPM control, On/Off RGB button, 5-Year Warranty Only 5 left in stock Next Day Delivery from £5.99* £51.98 inc vat £43.32 ex vat VIEW DETAILS ADD TO BASKET Stock Code: TT-HAM550W Manf Code: W0592RE Corsair RMx Series RM1000x (2021) 1000W 80 PLUS Gold Fully Modular ATX Power Supply / PSU 1000W, 80 PLUS Gold, Fully-Modular, 105°C Japanese Capacitors, 135mm Fan, 10 Year Warranty Only 5 left in stock Next Day Delivery from £5.99* £159.98 inc vat £133.32 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-RM1LX Manf Code: CP-9020201-UK Aerocool Cylon 700W 80 Plus White non-Modular PSU 700W, 80 Plus White, Non-Modular, 120mm Fan, Flat Black Cables, Only 4 left in stock Next Day Delivery from £5.99* £35.99 inc vat £29.99 ex vat VIEW DETAILS ADD TO BASKET Stock Code: AER-100023 Manf Code: ACPW-CN70AKC.11 BeQuiet! SFX L POWER 600W 80 PLUS Gold SFX L Power Supply / PSU 600W, 80 PLUS Gold, Fully-Modular, 120mm Fan, 3 Year Warranty Only 1 left in stock Next Day Delivery from £5.99* £119.99 inc vat £99.99 ex vat VIEW DETAILS ADD TO BASKET Stock Code: BQ-BN239 Manf Code: BN239 Corsair CX-M Series 450W 80 PLUS Bronze Semi-Modular ATX Power Supply CX450M, 450W, 80 PLUS Bronze, Semi-Modular, 5 Year Warranty Only 1 left in stock Next Day Delivery from £5.99* £54.98 inc vat £45.82 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-CX45M2 Manf Code: CP-9020219-UK Corsair RM Series RM750 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU 750W, 80 PLUS Gold, Fully-Modular, 105°C Capacitors, 135mm Fan, 10 Year Warranty 10+ in stock Next Day Delivery from £5.99* £97.99 inc vat £81.66 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-RM750F Manf Code: CP-9020195-UK Corsair RM Series RM850 (2021) 750W 80 PLUS Gold Fully Modular ATX Power Supply / PSU 850W, 80 PLUS Gold, Fully-Modular, 105°C Capacitors, 140mm Fan, 10 Year Warranty 10+ in stock Next Day Delivery from £5.99* £109.99 inc vat £91.66 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-RM85V2 Manf Code: CP-9020235-UK Cooler Master MWE 700 WHITE 230V - V2 Power Supply 700W, 80 Plus White, Non-Modular, up to 41dBA, 120mm Fan, 2400RPM, 10+ in stock Next Day Delivery from £5.99* £49.99 inc vat £41.66 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CM-MWE700W Manf Code: MPE-7001-ACABW-UK CORSAIR TX750M 750W 80 Plus Gold Power Supply 750W, 80 Plus Gold, Semi-Modular, All Japanese Capacitors, 120mm Rifle bearing fan, 7-Year Warranty 10+ in stock Next Day Delivery from £5.99* £96.47 inc vat £80.39 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-TX750M Manf Code: CP-9020131-UK Corsair CX Series CX750F RGB 80 PLUS Bronze 750W Fully Modular ATX Power Supply 750W, 80 PLUS Bronze, Fully Modular, 120mm RGB Fan, 140mm Depth, 5 Year Warranty 10+ in stock Next Day Delivery from £5.99* £89.99 inc vat £74.99 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-CX75FR Manf Code: CP-9020218-UK FSP 250W Flex TX 85+ Full Range Power Supply 250W, Flex ATX, 80 Plus Bronze 10+ in stock Next Day Delivery from £5.99* £32.99 inc vat £27.49 ex vat VIEW DETAILS ADD TO BASKET Stock Code: FSP-250GUB Manf Code: 9PA250CX05 Gigabyte P850GM 750W Modular 80+ Gold PSU 10+ in stock Next Day Delivery from £5.99* £98.63 inc vat £82.19 ex vat VIEW DETAILS ADD TO BASKET Stock Code: GIG-850GM Manf Code: GP-P850GM Corsair RMx Series RM650x 650W 80 PLUS Gold Fully Modular ATX Power Supply / PSU 650W, 80 PLUS Gold, Fully-Modular, 105°C Japanese Capacitors, 140mm Fan, 10 Year Warranty 10+ in stock Next Day Delivery from £5.99* £104.99 inc vat £87.49 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-RM650X Manf Code: CP-9020178-UK Corsair RMx Series RM550x 550W 80 PLUS Gold Fully Modular ATX Power Supply / PSU 550W, 80 PLUS Gold, Fully-Modular, 105°C Japanese Capacitors, 140mm Fan, 10 Year Warranty 10+ in stock Next Day Delivery from £5.99* £89.99 inc vat £74.99 ex vat VIEW DETAILS ADD TO BASKET Stock Code: CSR-RM550X Manf Code: CP-9020177-UK EVGA W1 600W 80 PLUS White ATX Power Supply 600W, 80 PLUS White, 3 Year Warranty, 140mm Depth 10+ in stock Next Day Delivery from £5.99* £45.98 inc vat £38.32 ex vat VIEW DETAILS ADD TO BASKET Stock Code: EVG-600W Manf Code: 100-W1-0600-K3 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! 12345Next Showing products 1 to 24 of 106 (5 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. Get the latest from Novatech Signup to our mailing list to get the latest info on deals and events before everyone else. Don't worry, we won't fill your inbox with spam. 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