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Best by budget

Best Power Supply Under £150

The power supplies you can buy new for £150 or less, ranked by efficiency rating and cabling. Each price is the cheapest in-stock price we found among the UK shops we check, as of 21 October 2026. Delivery is extra at some shops.

  1. 1

    Corsair RM1000e 1000W 80+ Platinum Fully Modular ATX 3.1 PCIe 5.1 Power Supply with ThermalProtect - Black

    1000W, 80+ Platinum, fully modular

    £119.99 at Corsair

    1 other listing of this model (another size or colour) also at £150 or less.

  2. 2

    Antec HCG1000 PRO 1000W 80+ Platinum Fully Modular ATX 3.1 PCIe 5.1 Power Supply - Black

    1000W, 80+ Platinum, fully modular

    £146.29 at AWD-IT

  3. 3

    ASUS TUF Gaming 1000W Platinum PCIe 5.1 ATX 3.1 80+ Cybenetics Platinum Fully Modular Power Supply Unit - 90YE0101-B0NA00

    1000W, 80+ Platinum, fully modular

    £149.99 at AWD-IT

    1 other listing of this model (another size or colour) also at £150 or less.

  4. 4

    MSI MAG A1000PLS PCIE5 1000W 80 PLUS Platinum ATX 3.1 PCIe 5.1 Fully Modular Power Supply - Black - MAG A1000PLS PCIE5

    1000W, 80+ Platinum, fully modular

    £149.99 at MSI; also AWD-IT £149.99

  5. 5

    Thermaltake Toughpower PT 1000W Fully Modular 80+ Platinum PCIE 5.1 ATX3.1 Power Supply - PS-TPP-1000FNFAPK-1

    1000W, 80+ Platinum, fully modular

    £149.99 at AWD-IT

  6. 6

    Corsair RM850e 850W 80+ Platinum Fully Modular ATX 3.1 PCIe 5.1 Power Supply with ThermalProtect - Black

    850W, 80+ Platinum, fully modular

    £94.99 at Corsair

    1 other listing of this model (another size or colour) also at £150 or less.

  7. 7

    Antec HCG850 PRO 850W 80+ Platinum Fully Modular ATX 3.1 PCIe 5.1 Power Supply - Black

    850W, 80+ Platinum, fully modular

    £99.95 at Overclockers UK; also AWD-IT £133.08

  8. 8

    Corsair SF Series (2024) SF850, 80 PLUS Platinum, Fully Modular Power Supply - CP-9020256-UK

    850W, 80+ Platinum, fully modular

    £129.99 at CCL Computers; also AWD-IT £164.99, Corsair £164.99, Overclockers UK £174.95

  9. 9

    be quiet! Power Zone 2 750 Watt Fully Modular 80+ Platinum ATX 3.1 Power Supply - BP006EU

    750W, 80+ Platinum, fully modular

    £113.99 at AWD-IT

  10. 10

    Corsair SF Series (2024) SF750, 80 PLUS Platinum, Fully Modular Power Supply - CP-9020284-UK

    750W, 80+ Platinum, fully modular

    £144.95 at Overclockers UK; also Novatech £144.98, CCL Computers £144.99, AWD-IT £144.99 and 1 more

How we rank

Best 80 PLUS efficiency rating first, then fully modular over semi-modular over fixed cables (a unit listed only as "modular" counts as semi-modular, because the listing does not say which), then more watts, then the cheaper unit. Units without a readable 80 PLUS rating are left out.

Only power supplies with a photo, a full spec table and a new, in-stock price read in the last two weeks are considered, so a part that is sold out everywhere drops off until a shop has it again. Refurbished and used stock is left out. Prices change through the day: check the shop before you buy. We may earn commission when you buy through a link on a product page; it never changes the order here.