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ATX / PS2 Power Supply Units

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  1. New
    Antec NE 850W 80+ Gold Fully Modular ATX Power Supply Unit - White
    $220
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  2. New
    Antec NE 850W 80+ Gold Fully Modular ATX Power Supply Unit
    $220
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  3. New
    Antec NE 750W 80+ Gold Fully Modular ATX Power Supply Unit
    $185
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  4. New
    Antec NE 650W 80+ Gold Fully Modular ATX Power Supply Unit
    $165
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  5. New
    DeepCool DA700 700W 24-pin ATX Power Supply Unit Black
    $101.87
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  6. New
    DeepCool DA600-M 600W 24-pin ATX Power Supply Unit
    $101.87
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  7. New
    Coolermaster MWE 750 Bronze V2 230V 750W ATX Power Supply Unit Black
    $99
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  8. New
    Coolermaster MWE 650 Bronze V2 230V 650W ATX Power Supply Unit Black
    $89
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  9. New
    Coolermaster MWE 550 Bronze V2 230V 550W ATX Power Supply Unit Black
    $79
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  10. New
    Coolermaster MWE 450 Bronze V2 230V 450W ATX Power Supply Unit Black
    $69
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  11. New
    Antec HCG 100W 80+ Gold Fully Modular ATX Power Supply Unit
    $299
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  12. Gigabyte Aorus P1200PM 1200W 80+ Platinum Power Supply Unit
    $549
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  13. Corsair RM850 850W 80+ Gold ATX Power Supply
    $189
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  14. Corsair RM750 750W 80+ Gold ATX Power Supply
    $169
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  15. Corsair RM650 650W 80+ Gold ATX Power Supply
    $169
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  16. Corsair RM850 850W 80+ Gold ATX Power Supply - White
    $219
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  17. Corsair RM750 750W 80+ Gold ATX Power Supply - White
    $179
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  18. Corsair RM1000x 1000W 80+ Gold ATX Power Supply
    $319
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  19. Corsair RM850x 850W 80+ Gold ATX Power Supply
    $205
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  20. Corsair RM750x 750W 80+ Gold ATX Power Supply
    $179
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  21. Corsair RM650x 650W 80+ Gold ATX Power Supply
    $179
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  22. SilverStone VIVA 750W 80Plus Bronze Power Supply
    $105
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  23. SilverStone VIVA 650W 80Plus Bronze Power Supply
    $89
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  24. SilverStone VIVA 550W 80Plus Bronze Power Supply
    $79
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  25. Save $10Sale
    SilverStone Strider 750W 80+ Platinum ATX Power Supply V1.1
    $208.95 Was $219
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  26. SilverStone 1200W 80+ Platinum Power Supply - Fully Modular
    $299
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  27. SilverStone Essential 750W 80+ Gold Semi-Modular Power Supply V1.2
    $149
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  28. SilverStone Essential 750W 80+ Bronze Power Supply V1.1
    $119
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  29. SilverStone Essential 650W 80+ Bronze Power Supply V1.2
    $129
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  30. SilverStone Essential 500W 80+ Gold Modular Power Supply
    $135
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Power supply units convert the AC power from the building into the correct voltage DC and deliver power to the components of a PC.

As time progresses, computer parts are becoming more energy efficient, thus the need for a high wattage PSU is slowly decreasing.

Power supplies are rated by numbers and colour using the voluntary “80 Plus” certification. This is a global standard that has been adopted by most manufacturers. Put simply, the higher the rating, the more energy efficient the power supply is, meaning money saved on power bills.

The order of preference is 80 Plus Platinum > 80 Plus Gold > 80 Plus Silver > 80 Plus Bronze > 80 Plus.

For high end systems, and for computers that are on 24/7, aim for a gold rated PSU.

For the everyday office worker or casual gamer doing a few hours a day, there’s nothing wrong with an 80 Plus or bronze/silver-rated PSU.

In terms of wattage, the majority of office PCs and gamers should use a power supply that is under 600W. It’s much better to invest in a higher rated PSU with lower wattage than the other way around. Only people running high-specced gaming systems with two graphics cards or enterprise parts would need to venture 750W or above.

Fully modular power supplies are excellent for those who want to perform neat cabling in their PC. This allows you to remove all unused cables. Non-modular or semi-modular PSUs will not allow you to remove some cables.

While power supplies are a boring component of a PC, it's one you want to get right (for reliability and longevity) as they can last a long time and possibly be re-used in future systems.