PC Power Supplies

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  1. MSI MPG A850G 850W Full Modular 80+ Gold PCIe 5.0 Compact Power Supply

    • 850 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 135mm
    £139.99 inc. VAT.
    In stock
    *FREE Delivery
  2. Corsair RM750e Fully Modular Low-Noise ATX 80 PLUS Gold Power Supply

    • 750 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 120mm
    £114.98 inc. VAT.
    In stock
    *FREE Delivery
  3. Corsair RM White Series 750W 24-pin 80+ Gold Power Supply

    • 750 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 140mm
    £120.49 inc. VAT.
    In stock
    *FREE Delivery
  4. Save £55.01

    Cooler Master MWE 650 V2 ATX 80 PLUS Bronze Power Supply

    • 650 W Wattage
    • Non Modular
    • 80 PLUS Bronze
    • Fan Size: 1 x 120mm
    • 24-pin ATX
    £99.99 inc. VAT. / £44.98 inc. VAT.
    In stock
    *FREE Delivery
  5. MSI MAG A750BN 750W 80+ Bronze PCIe 5.0 Power Supply

    • 750 W Wattage
    • 80 PLUS Bronze
    • Fan Size: 1 x 120mm
    £69.99 inc. VAT.
    In stock
    *FREE Delivery
  6. MSI MAG A650GL 650W Full Modular 80+ Gold PCIe Compact Power Supply

    • 650 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 120mm
    £79.99 inc. VAT.
    In stock
    *FREE Delivery
  7. MSI MAG A850GL 850W Full Modular 80+ Gold PCIe 5.0 Compact Power Supply

    • 850 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 120mm
    £119.99 inc. VAT.
    In stock
    *FREE Delivery
  8. MSI MAG A750GL 750W Full Modular 80+ Gold PCIe 5.0 Compact Power Supply

    • 750 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 120mm
    £99.99 inc. VAT.
    In stock
    *FREE Delivery
  9. MSI MPG A1000G 1000W Full Modular 80+ Gold PCIe 5.0 Compact Power Supply

    • 1000 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 135mm
    £169.99 inc. VAT.
    In stock
    *FREE Delivery
  10. MSI MEG Ai1300P 1300W Full Modular 80+ PCIe 5.0 Platinum Power Supply

    • 1300 W Wattage
    • Full Modular
    • 80 PLUS Platinum
    • Fan Size: 1 x 120mm
    £299.99 inc. VAT.
    In stock
    *FREE Delivery
  11. Corsair SF850L 850 Watt Fully Modular 80+ Gold SFX Power Supply

    • 850 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 120mm
    £159.49 inc. VAT.
    In stock
    *FREE Delivery
  12. Corsair RMx SHIFT Series 850W 80+ Gold PCIe 5 Fully Modular ATX3.0 Power Supply

    • 850 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 140mm
    £155.49 inc. VAT.
    In stock
    *FREE Delivery
  13. Corsair RMx SHIFT Series 750W 80+ Gold Fully Modular Power Supply

    • 750 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 140mm
    £142.49 inc. VAT.
    In stock
    *FREE Delivery
  14. Corsair SF1000L 1000 Watt Fully Modular 80+ Gold SFX Power Supply

    • 1000 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 120mm
    £196.49 inc. VAT.
    In stock
    *FREE Delivery
  15. Corsair RMe Series 1000 Watt Compact Fully Modular 80+ Gold Power Supply

    • 1000 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 120mm
    £156.99 inc. VAT.
    In stock
    *FREE Delivery
  16. Corsair RMx SHIFT Series 1200W 80+ Gold Fully Modular Power Supply

    • 1200 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 140mm
    £231.49 inc. VAT.
    In stock
    *FREE Delivery
  17. £192.49 inc. VAT.
    In stock
    *FREE Delivery
  18. Corsair RM850x 850 Watt Fully Modular 80+ Gold Power Supply

    • 850 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 135mm
    £151.49 inc. VAT.
    In stock
    *FREE Delivery
  19. Corsair RM White Series 850W 80+ Gold Power Supply

    • 850 W Wattage
    • Full Modular
    • 80 PLUS Gold
    • Fan Size: 1 x 140mm
    £132.49 inc. VAT.
    In stock
    *FREE Delivery
  20. Corsair CX Series 750W 80+ Bronze Fully Wired Power Supply

    • 750 W Wattage
    • Fully Wired
    • 80 PLUS Bronze
    • Fan Size: 1 x 120mm
    £69.99 inc. VAT.
    In stock
    *FREE Delivery
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PC POWER SUPPLIES

A power supply unit (or PSU) is an essential piece to the puzzle when it comes to getting your systems operational and maintaining stable long-term outputs. While other components within your setups may get more attention due to their roles once your systems begin operations, they will never be able to get to that point without the support of an adequate PSU. Here at Box, we stock everything you need for the best custom PC build experience, as well as the tools to help DIY enthusiasts make the necessary alterations to their builds, including an extensive range of power supply units to fit all kinds of builds and budgets.

What to Look for In A PC Power Supply Unit

Some of the most important things to consider when selecting the right PSU are wattage output, cable type and efficiency rating. Ensuring you have sufficient output potential to actually power your components is essential in your search. Certain systems like high-end gaming PCs will require more power outputs than a more basic mini-PC, so understanding what your current build needs should be step one.

The 80 Plus rating of your PSU is important to know as it determines the efficiency and power consumption rate of your power delivery. Typically, anything from 80 Plus Silver and onwards should handle your basic computing demands, but those looking to air on the side of caution may want to invest in an 80 Plus Gold model.

Cable type is important as it determines how you are able to actually integrate your PSU into your PC case. Which type of connection you end up going for can also be directly influenced by your level of experience when it comes to the PC build and maintenance process. Those already very experienced may find no issue opting for a fully-modular cable connection, where you can pick and choose freely which cables you end up utilising. However, the more novice builders may find it safer to stick with the non-modular or semi-modular cable type as they offer a more straightforward installation process.

Best Offers on Pc Power Supplies From Box

Browse our range of PC power supplies and find which model is right for you. We stock leading brands like be quiet! and Cooler Master, which are sure to be found through your builds and existing setups. Once you know what your system needs, the hard part is over and you can begin making your choice. Best offers mean you and your budget might just be in for a treat, so get shopping now.